liver arginase [synthetic construct]
Protein Classification
List of domain hits
| Name | Accession | Description | Interval | E-value | |||||
| Arginase-like | cd11587 | Arginase types I and II and arginase-like family; This family includes arginase, also known as ... |
9-303 | 2.16e-180 | |||||
Arginase types I and II and arginase-like family; This family includes arginase, also known as arginase-like amidino hydrolase family, and related proteins, found in bacteria, archaea and eykaryotes. Arginase is a binuclear Mn-dependent metalloenzyme and catalyzes hydrolysis of L-arginine to L-ornithine and urea (Arg, EC 3.5.3.1), the reaction being the fifth and final step in the urea cycle, providing the path for the disposal of nitrogenous compounds. Arginase controls cellular levels of arginine and ornithine which are involved in protein biosynthesis, and in production of creatine, polyamines, proline and nitric acid. In vertebrates, at least two isozymes have been identified: type I cytoplasmic or hepatic liver-type arginase and type II mitochondrial or non-hepatic arginase. Point mutations in human arginase gene lead to hyperargininemia with consequent mental disorders, retarded development and early death. Arginase is a therapeutic target to treat asthma, erectile dysfunction, atherosclerosis and cancer. : Pssm-ID: 212536 Cd Length: 294 Bit Score: 511.26 E-value: 2.16e-180
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| IgC1_CH3_IgAGD_CH4_IgAEM | cd05768 | CH3 domain (third constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, gamma, ... |
499-599 | 1.79e-48 | |||||
CH3 domain (third constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, gamma, and delta chains, and CH4 domain (fourth constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, epsilon, and mu chains; member of the C1-set of I; The members here are composed of the third and fourth immunoglobulin constant domain (IgC) of alpha, delta, gamma and alpha, epsilon, and mu heavy chains, respectively. This domain is found on the Fc fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. : Pssm-ID: 409425 Cd Length: 105 Bit Score: 164.05 E-value: 1.79e-48
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| Ig super family | cl11960 | Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ... |
391-490 | 1.63e-35 | |||||
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. The actual alignment was detected with superfamily member cd07696: Pssm-ID: 472250 Cd Length: 98 Bit Score: 128.72 E-value: 1.63e-35
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| Name | Accession | Description | Interval | E-value | |||||
| Arginase-like | cd11587 | Arginase types I and II and arginase-like family; This family includes arginase, also known as ... |
9-303 | 2.16e-180 | |||||
Arginase types I and II and arginase-like family; This family includes arginase, also known as arginase-like amidino hydrolase family, and related proteins, found in bacteria, archaea and eykaryotes. Arginase is a binuclear Mn-dependent metalloenzyme and catalyzes hydrolysis of L-arginine to L-ornithine and urea (Arg, EC 3.5.3.1), the reaction being the fifth and final step in the urea cycle, providing the path for the disposal of nitrogenous compounds. Arginase controls cellular levels of arginine and ornithine which are involved in protein biosynthesis, and in production of creatine, polyamines, proline and nitric acid. In vertebrates, at least two isozymes have been identified: type I cytoplasmic or hepatic liver-type arginase and type II mitochondrial or non-hepatic arginase. Point mutations in human arginase gene lead to hyperargininemia with consequent mental disorders, retarded development and early death. Arginase is a therapeutic target to treat asthma, erectile dysfunction, atherosclerosis and cancer. Pssm-ID: 212536 Cd Length: 294 Bit Score: 511.26 E-value: 2.16e-180
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| rocF_arginase | TIGR01229 | arginase; This model helps resolve arginases from known and putative agmatinases, ... |
9-309 | 8.45e-171 | |||||
arginase; This model helps resolve arginases from known and putative agmatinases, formiminoglutamases, and other related proteins of unknown specifity. The pathway from arginine to the polyamine putrescine may procede by hydrolysis to remove urea (arginase) followed by decarboxylation (ornithine decarboxylase), or by decarboxylation first (arginine decarboxylase) followed by removal of urea (agmatinase). Pssm-ID: 162262 Cd Length: 300 Bit Score: 486.94 E-value: 8.45e-171
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| Arginase | pfam00491 | Arginase family; |
8-304 | 1.89e-96 | |||||
Arginase family; Pssm-ID: 425716 [Multi-domain] Cd Length: 272 Bit Score: 295.96 E-value: 1.89e-96
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| SpeB | COG0010 | Arginase/agmatinase family enzyme [Amino acid transport and metabolism]; Arginase/agmatinase ... |
2-306 | 1.76e-79 | |||||
Arginase/agmatinase family enzyme [Amino acid transport and metabolism]; Arginase/agmatinase family enzyme is part of the Pathway/BioSystem: Urea cycle Pssm-ID: 439781 [Multi-domain] Cd Length: 283 Bit Score: 252.44 E-value: 1.76e-79
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| IgC1_CH3_IgAGD_CH4_IgAEM | cd05768 | CH3 domain (third constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, gamma, ... |
499-599 | 1.79e-48 | |||||
CH3 domain (third constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, gamma, and delta chains, and CH4 domain (fourth constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, epsilon, and mu chains; member of the C1-set of I; The members here are composed of the third and fourth immunoglobulin constant domain (IgC) of alpha, delta, gamma and alpha, epsilon, and mu heavy chains, respectively. This domain is found on the Fc fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. Pssm-ID: 409425 Cd Length: 105 Bit Score: 164.05 E-value: 1.79e-48
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| C1-set | pfam07654 | Immunoglobulin C1-set domain; |
501-585 | 8.98e-36 | |||||
Immunoglobulin C1-set domain; Pssm-ID: 462221 Cd Length: 85 Bit Score: 128.91 E-value: 8.98e-36
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| IgC1_CH3_IgAEM_CH2_IgG | cd07696 | CH3 domain (third constant Ig domain of heavy chains) in immunoglobulin heavy alpha, epsilon, ... |
391-490 | 1.63e-35 | |||||
CH3 domain (third constant Ig domain of heavy chains) in immunoglobulin heavy alpha, epsilon, and mu chains, and CH2 domain (second constant Ig domain of the gheavy chain) in immunoglobulin heavy gamma chain; member of the C1-set of Ig superfamily (IgSF) ; The members here are composed of the third immunoglobulin constant domain (IgC) of the gamma heavy chains and the second immunoglobulin constant domain (IgC) of alpha, epsilon, and mu heavy chains. This domain is found on the Fc fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. Pssm-ID: 409493 Cd Length: 98 Bit Score: 128.72 E-value: 1.63e-35
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| IGc1 | smart00407 | Immunoglobulin C-Type; |
515-588 | 1.30e-31 | |||||
Immunoglobulin C-Type; Pssm-ID: 214651 Cd Length: 75 Bit Score: 117.03 E-value: 1.30e-31
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| C1-set | pfam07654 | Immunoglobulin C1-set domain; |
393-481 | 5.71e-22 | |||||
Immunoglobulin C1-set domain; Pssm-ID: 462221 Cd Length: 85 Bit Score: 90.00 E-value: 5.71e-22
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| PRK02190 | PRK02190 | agmatinase; Provisional |
10-280 | 3.79e-19 | |||||
agmatinase; Provisional Pssm-ID: 235011 Cd Length: 301 Bit Score: 88.36 E-value: 3.79e-19
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| IGc1 | smart00407 | Immunoglobulin C-Type; |
412-481 | 4.57e-05 | |||||
Immunoglobulin C-Type; Pssm-ID: 214651 Cd Length: 75 Bit Score: 41.92 E-value: 4.57e-05
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| Name | Accession | Description | Interval | E-value | |||||
| Arginase-like | cd11587 | Arginase types I and II and arginase-like family; This family includes arginase, also known as ... |
9-303 | 2.16e-180 | |||||
Arginase types I and II and arginase-like family; This family includes arginase, also known as arginase-like amidino hydrolase family, and related proteins, found in bacteria, archaea and eykaryotes. Arginase is a binuclear Mn-dependent metalloenzyme and catalyzes hydrolysis of L-arginine to L-ornithine and urea (Arg, EC 3.5.3.1), the reaction being the fifth and final step in the urea cycle, providing the path for the disposal of nitrogenous compounds. Arginase controls cellular levels of arginine and ornithine which are involved in protein biosynthesis, and in production of creatine, polyamines, proline and nitric acid. In vertebrates, at least two isozymes have been identified: type I cytoplasmic or hepatic liver-type arginase and type II mitochondrial or non-hepatic arginase. Point mutations in human arginase gene lead to hyperargininemia with consequent mental disorders, retarded development and early death. Arginase is a therapeutic target to treat asthma, erectile dysfunction, atherosclerosis and cancer. Pssm-ID: 212536 Cd Length: 294 Bit Score: 511.26 E-value: 2.16e-180
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| rocF_arginase | TIGR01229 | arginase; This model helps resolve arginases from known and putative agmatinases, ... |
9-309 | 8.45e-171 | |||||
arginase; This model helps resolve arginases from known and putative agmatinases, formiminoglutamases, and other related proteins of unknown specifity. The pathway from arginine to the polyamine putrescine may procede by hydrolysis to remove urea (arginase) followed by decarboxylation (ornithine decarboxylase), or by decarboxylation first (arginine decarboxylase) followed by removal of urea (agmatinase). Pssm-ID: 162262 Cd Length: 300 Bit Score: 486.94 E-value: 8.45e-171
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| Arginase | cd09989 | Arginase family; This family includes arginase, also known as arginase-like amidino hydrolase ... |
8-303 | 7.41e-151 | |||||
Arginase family; This family includes arginase, also known as arginase-like amidino hydrolase family, and related proteins. Arginase is a binuclear Mn-dependent metalloenzyme and catalyzes hydrolysis of L-arginine to L-ornithine and urea (Arg, EC 3.5.3.1), the reaction being the fifth and final step in the urea cycle, providing the path for the disposal of nitrogenous compounds. Arginase controls cellular levels of arginine and ornithine which are involved in protein biosynthesis, and in production of creatine, polyamines, proline and nitric acid. In vertebrates, at least two isozymes have been identified: type I (ARG1) cytoplasmic or hepatic liver-type arginase and type II (ARG2) mitochondrial or non-hepatic arginase. Point mutations in human arginase ARG1 gene lead to hyperargininemia with consequent mental disorders, retarded development and early death. Hyperargininemia is associated with a several-fold increase in the activity of the mitochondrial arginase (ARG2), causing persistent ureagenesis in patients. ARG2 overexpression plays a critical role in the pathophysiology of cholesterol mediated endothelial dysfunction. Thus, arginase is a therapeutic target to treat asthma, erectile dysfunction, atherosclerosis and cancer. Pssm-ID: 212515 Cd Length: 290 Bit Score: 435.77 E-value: 7.41e-151
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| Ureohydrolase | cd09015 | Ureohydrolase superfamily includes arginase, formiminoglutamase, agmatinase and proclavaminate ... |
10-301 | 3.15e-106 | |||||
Ureohydrolase superfamily includes arginase, formiminoglutamase, agmatinase and proclavaminate amidinohydrolase (PAH); This family, also known as arginase-like amidino hydrolase family, includes Mn-dependent enzymes: arginase (Arg, EC 3.5.3.1), formimidoylglutamase (HutG, EC 3.5.3.8 ), agmatinase (SpeB, EC 3.5.3.11), guanidinobutyrase (Gbh, EC=3.5.3.7), proclavaminate amidinohydrolase (PAH, EC 3.5.3.22) and related proteins. These enzymes catalyze hydrolysis of amide bond. They are involved in control of cellular levels of arginine and ornithine (both involved in protein biosynthesis, and production of creatine, polyamines, proline and nitric acid), in histidine and arginine degradation, and in clavulanic acid biosynthesis. Pssm-ID: 212511 [Multi-domain] Cd Length: 270 Bit Score: 320.92 E-value: 3.15e-106
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| Arginase | pfam00491 | Arginase family; |
8-304 | 1.89e-96 | |||||
Arginase family; Pssm-ID: 425716 [Multi-domain] Cd Length: 272 Bit Score: 295.96 E-value: 1.89e-96
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| Arginase_HDAC | cd09987 | Arginase-like and histone-like hydrolases; Arginase-like/histone-like hydrolase superfamily ... |
75-303 | 6.99e-84 | |||||
Arginase-like and histone-like hydrolases; Arginase-like/histone-like hydrolase superfamily includes metal-dependent enzymes that belong to Arginase-like amidino hydrolase family and histone/histone-like deacetylase class I, II, IV family, respectively. These enzymes catalyze hydrolysis of amide bond. Arginases are known to be involved in control of cellular levels of arginine and ornithine, in histidine and arginine degradation and in clavulanic acid biosynthesis. Deacetylases play a role in signal transduction through histone and/or other protein modification and can repress/activate transcription of a number of different genes. They participate in different cellular processes including cell cycle regulation, DNA damage response, embryonic development, cytokine signaling important for immune response and post-translational control of the acetyl coenzyme A synthetase. Mammalian histone deacetyases are known to be involved in progression of different tumors. Specific inhibitors of mammalian histone deacetylases are an emerging class of promising novel anticancer drugs. Pssm-ID: 212513 Cd Length: 217 Bit Score: 261.16 E-value: 6.99e-84
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| SpeB | COG0010 | Arginase/agmatinase family enzyme [Amino acid transport and metabolism]; Arginase/agmatinase ... |
2-306 | 1.76e-79 | |||||
Arginase/agmatinase family enzyme [Amino acid transport and metabolism]; Arginase/agmatinase family enzyme is part of the Pathway/BioSystem: Urea cycle Pssm-ID: 439781 [Multi-domain] Cd Length: 283 Bit Score: 252.44 E-value: 1.76e-79
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| IgC1_CH3_IgAGD_CH4_IgAEM | cd05768 | CH3 domain (third constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, gamma, ... |
499-599 | 1.79e-48 | |||||
CH3 domain (third constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, gamma, and delta chains, and CH4 domain (fourth constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, epsilon, and mu chains; member of the C1-set of I; The members here are composed of the third and fourth immunoglobulin constant domain (IgC) of alpha, delta, gamma and alpha, epsilon, and mu heavy chains, respectively. This domain is found on the Fc fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. Pssm-ID: 409425 Cd Length: 105 Bit Score: 164.05 E-value: 1.79e-48
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| Agmatinase-like | cd09990 | Agmatinase-like family; Agmatinase subfamily currently includes metalloenzymes such as ... |
8-304 | 4.21e-44 | |||||
Agmatinase-like family; Agmatinase subfamily currently includes metalloenzymes such as agmatinase, guanidinobutyrase, guanidopropionase, formimidoylglutamase and proclavaminate amidinohydrolase. Agmatinase (agmatine ureohydrolase; SpeB; EC=3.5.3.11) is the key enzyme in the synthesis of polyamine putrescine; it catalyzes hydrolysis of agmatine to yield putrescine and urea. This enzyme has been found in bacteria, archaea and eukaryotes, requiring divalent Mn and sometimes Zn, Co or Ca for activity. In mammals, the highest level of agmatinase mRNA was found in liver and kidney. However, catabolism of agmatine via agmatinase apparently is a not major path; it is mostly catabolized via diamine oxidase. Agmatinase has been shown to be down-regulated in tumor renal cells. Guanidinobutyrase (Gbh, EC=3.5.3.7) catalyzes hydrolysis of 4-guanidinobutanoate to yield 4-aminobutanoate and urea in arginine degradation pathway. Activity has been shown for purified enzyme from Arthrobacter sp. KUJ 8602. Additionally, guanidinobutyrase is able to hydrolyze D-arginine, 3-guanidinopropionate, 5-guanidinovaleriate and L-arginine with much less affinity, having divalent Zn ions for catalysis. Proclavaminate amidinohydrolase (Pah, EC 3.5.3.22) hydrolyzes amidinoproclavaminate to yield proclavaminate and urea in clavulanic acid biosynthesis. Activity has been shown for purified enzyme from Streptomyces clavuligerus. Clavulanic acid is the effective inhibitor of beta-lactamases. This acid is used in combination with the penicillin amoxicillin to prevent antibiotic's beta-lactam rings from hydrolysis, thus keeping the antibiotics biologically active. Pssm-ID: 212516 [Multi-domain] Cd Length: 275 Bit Score: 158.49 E-value: 4.21e-44
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| Agmatinase-like_2 | cd11593 | Agmatinase and related proteins; This family includes known and predicted bacterial and ... |
8-283 | 1.40e-41 | |||||
Agmatinase and related proteins; This family includes known and predicted bacterial and archaeal agmatinase (agmatine ureohydrolase; AUH; SpeB; EC=3.5.3.11), a binuclear manganese metalloenzyme that belongs to the ureohydrolase superfamily. It is a key enzyme in the synthesis of polyamine putrescine; it catalyzes hydrolysis of agmatine to yield urea and putrescine, the precursor for biosynthesis of higher polyamines, spermidine, and spermine. As compared to E. coli where two paths to putrescine exist, via decarboxylation of an amino acid, ornithine or arginine, a single path is found in Bacillus subtilis, where polyamine synthesis starts with agmatine; the speE and speB encode spermidine synthase and agmatinase, respectively. The level of agmatinase synthesis is very low, allowing strict control on the synthesis of putrescine and therefore, of all polyamines, consistent with polyamine levels in the cell. This subfamily belongs to the ureohydrolase superfamily, which includes arginase, agmatinase, proclavaminate amidinohydrolase, and formiminoglutamase. Pssm-ID: 212539 [Multi-domain] Cd Length: 263 Bit Score: 151.09 E-value: 1.40e-41
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| Agmatinase_PAH | cd11592 | Agmatinase-like family includes proclavaminic acid amidinohydrolase; This agmatinase subfamily ... |
8-281 | 9.71e-39 | |||||
Agmatinase-like family includes proclavaminic acid amidinohydrolase; This agmatinase subfamily contains bacterial and fungal/metazoan enzymes, including proclavaminic acid amidinohydrolase (PAH, EC 3.5.3.22) and Pseudomonas aeruginosa guanidinobutyrase (GbuA) and guanidinopropionase (GpuA). PAH hydrolyzes amidinoproclavaminate to yield proclavaminate and urea in clavulanic acid biosynthesis. Clavulanic acid is an effective inhibitor of beta-lactamases and is used in combination with amoxicillin to prevent the beta-lactam rings of the antibiotic from hydrolysis and, thus keeping the antibiotic biologically active. GbuA hydrolyzes 4-guanidinobutyrate (4-GB) into 4-aminobutyrate and urea while GpuA hydrolyzes 3-guanidinopropionate (3-GP) into beta-alanine and urea. Mutation studies show that significant variations in two active site loops in these two enzymes may be important for substrate specificity. This subfamily belongs to the ureohydrolase superfamily, which includes arginase, agmatinase, proclavaminate amidinohydrolase, and formiminoglutamase. Pssm-ID: 212538 [Multi-domain] Cd Length: 289 Bit Score: 144.15 E-value: 9.71e-39
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| Arginase-like_1 | cd09999 | Arginase-like amidino hydrolase family; This family includes arginase, also known as ... |
10-283 | 1.66e-38 | |||||
Arginase-like amidino hydrolase family; This family includes arginase, also known as arginase-like amidino hydrolase family, as well as arginase-like proteins and are found in bacteria, archaea and eykaryotes, but does not include metazoan arginases. Arginase is a binuclear Mn-dependent metalloenzyme and catalyzes hydrolysis of L-arginine to L-ornithine and urea (Arg, EC 3.5.3.1), the reaction being the fifth and final step in the urea cycle, providing the path for the disposal of nitrogenous compounds. Arginase controls cellular levels of arginine and ornithine which are involved in protein biosynthesis, and in production of creatine, polyamines, proline and nitric acid. Pssm-ID: 212523 Cd Length: 272 Bit Score: 142.77 E-value: 1.66e-38
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| C1-set | pfam07654 | Immunoglobulin C1-set domain; |
501-585 | 8.98e-36 | |||||
Immunoglobulin C1-set domain; Pssm-ID: 462221 Cd Length: 85 Bit Score: 128.91 E-value: 8.98e-36
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| IgC1_CH3_IgAEM_CH2_IgG | cd07696 | CH3 domain (third constant Ig domain of heavy chains) in immunoglobulin heavy alpha, epsilon, ... |
391-490 | 1.63e-35 | |||||
CH3 domain (third constant Ig domain of heavy chains) in immunoglobulin heavy alpha, epsilon, and mu chains, and CH2 domain (second constant Ig domain of the gheavy chain) in immunoglobulin heavy gamma chain; member of the C1-set of Ig superfamily (IgSF) ; The members here are composed of the third immunoglobulin constant domain (IgC) of the gamma heavy chains and the second immunoglobulin constant domain (IgC) of alpha, epsilon, and mu heavy chains. This domain is found on the Fc fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. Pssm-ID: 409493 Cd Length: 98 Bit Score: 128.72 E-value: 1.63e-35
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| IGc1 | smart00407 | Immunoglobulin C-Type; |
515-588 | 1.30e-31 | |||||
Immunoglobulin C-Type; Pssm-ID: 214651 Cd Length: 75 Bit Score: 117.03 E-value: 1.30e-31
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| agmatinase | TIGR01230 | agmatinase; Members of this family include known and predicted examples of agmatinase ... |
10-280 | 4.00e-24 | |||||
agmatinase; Members of this family include known and predicted examples of agmatinase (agmatine ureohydrolase). The seed includes members of archaea, for which no definitive agmatinase sequence has yet been made available. However, archaeal sequences are phylogenetically close to the experimentally verified B. subtilis sequence. One species of Halobacterium has been demonstrated in vitro to produce agmatine from arginine, but no putrescine from ornithine, suggesting that arginine decarboxylase and agmatinase, rather than arginase and ornithine decarboxylase, lead from Arg to polyamine biosynthesis. Note: a history of early misannotation of members of this family is detailed in PUBMED:10931887. Pssm-ID: 273514 [Multi-domain] Cd Length: 275 Bit Score: 102.14 E-value: 4.00e-24
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| IgC1 | cd00098 | Immunoglobulin Constant-1 (C1)-set domain; The members here are composed of C1-set domains, ... |
500-585 | 7.90e-24 | |||||
Immunoglobulin Constant-1 (C1)-set domain; The members here are composed of C1-set domains, classical Ig-like domains resembling the antibody constant domain. Members of the IgC1 family are components of immunoglobulin, T-cell receptors, CD1 cell surface glycoproteins, secretory glycoproteins A/C, and major histocompatibility complex (MHC) class I/II molecules. In immunoglobulins, each chain is composed of one variable domain (IgV) and one or more IgC domains. These names reflect the fact that the variability in sequences is higher in the variable domain than in the constant domain. The IgV domain is responsible for antigen binding, while the IgC domain is involved in oligomerization and molecular interactions. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other strands by G, F, C, and C'. Pssm-ID: 409354 Cd Length: 95 Bit Score: 95.99 E-value: 7.90e-24
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| Formimidoylglutamase | cd09988 | Formimidoylglutamase or HutE; Formimidoylglutamase (N-formimidoyl-L-glutamate ... |
9-282 | 1.03e-22 | |||||
Formimidoylglutamase or HutE; Formimidoylglutamase (N-formimidoyl-L-glutamate formimidoylhydrolase; formiminoglutamase; N-formiminoglutamate hydrolase; N-formimino-L-glutamate formiminohydrolase; HutE; EC 3.5.3.8) is a metalloenzyme that catalyzes hydrolysis of N-formimidoyl-L-glutamate to L-glutamate and formamide. This enzyme is involved in histidine degradation, requiring Mn as a cofactor while glutathione may be required for maximal activity. In Pseudomonas PAO1, mutation studies show that histidine degradation proceeds via a 'four-step' pathway if the 'five-step' route is absent and vice versa; in the four-step pathway, formiminoglutaminase (HutE, EC 3.5.3.8) directly converts formiminoglutamate (FIGLU) to L-glutamate and formamide in a single step. Formiminoglutamase has traditionally also been referred to as HutG; however, formiminoglutamase is structurally and mechanistically unrelated to N-formyl-glutamate deformylase (also called HutG). Phylogenetic analysis has suggested that HutE was acquired by horizontal gene transfer from a Ralstonia-like ancestor. Pssm-ID: 212514 [Multi-domain] Cd Length: 262 Bit Score: 97.97 E-value: 1.03e-22
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| C1-set | pfam07654 | Immunoglobulin C1-set domain; |
393-481 | 5.71e-22 | |||||
Immunoglobulin C1-set domain; Pssm-ID: 462221 Cd Length: 85 Bit Score: 90.00 E-value: 5.71e-22
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| Agmatinase_like_1 | cd11589 | Agmatinase and related proteins; This family includes known and predicted bacterial agmatinase ... |
8-282 | 1.81e-20 | |||||
Agmatinase and related proteins; This family includes known and predicted bacterial agmatinase (agmatine ureohydrolase; AUH; SpeB; EC=3.5.3.11), a binuclear manganese metalloenzyme, belonging to the ureohydrolase superfamily. It is a key enzyme in the synthesis of polyamine putrescine; it catalyzes hydrolysis of agmatine to yield urea and putrescine, the precursor for biosynthesis of higher polyamines, spermidine, and spermine. Agmatinase from Deinococcus radiodurans shows approximately 33% of sequence identity to human mitochondrial agmatinase. An analysis of the evolutionary relationship among ureohydrolase superfamily enzymes indicates the pathway involving arginine decarboxylase and agmatinase evolved earlier than the arginase pathway of polyamine. Pssm-ID: 212537 Cd Length: 274 Bit Score: 91.51 E-value: 1.81e-20
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| IgC1_L | cd07699 | Immunoglobulin light chain Constant domain; member of the C1-set of Ig superfamily (IgSF) ... |
498-585 | 1.04e-19 | |||||
Immunoglobulin light chain Constant domain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig) light chain constant (C) domain. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. In Ig, each chain is composed of one variable domain (IgV) and one or more constant domains (IgC); these names reflect the fact that the variability in sequences is higher in the variable domain than in the constant domain. There are five types of heavy chains (alpha, gamma, delta, epsilon, and mu), which determine the type of immunoglobulin: IgA, IgG, IgD, IgE, and IgM, respectively. In higher vertebrates, there are two types of light chain, designated kappa and lambda, which seem to be functionally identical, and can associate with any of the heavy chains. Pssm-ID: 409496 Cd Length: 99 Bit Score: 84.43 E-value: 1.04e-19
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| PRK02190 | PRK02190 | agmatinase; Provisional |
10-280 | 3.79e-19 | |||||
agmatinase; Provisional Pssm-ID: 235011 Cd Length: 301 Bit Score: 88.36 E-value: 3.79e-19
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| IgC1_CH2_Mu | cd16093 | CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin mu chain; member ... |
499-595 | 5.06e-17 | |||||
CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin mu chain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin constant domain (IgC) of mu heavy chains. This domain is found on the Fc fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. Pssm-ID: 409513 Cd Length: 99 Bit Score: 76.66 E-value: 5.06e-17
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| IgC1_CH3_IgAGD_CH4_IgAEM | cd05768 | CH3 domain (third constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, gamma, ... |
391-495 | 2.52e-16 | |||||
CH3 domain (third constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, gamma, and delta chains, and CH4 domain (fourth constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, epsilon, and mu chains; member of the C1-set of I; The members here are composed of the third and fourth immunoglobulin constant domain (IgC) of alpha, delta, gamma and alpha, epsilon, and mu heavy chains, respectively. This domain is found on the Fc fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. Pssm-ID: 409425 Cd Length: 105 Bit Score: 74.68 E-value: 2.52e-16
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| IgC1 | cd00098 | Immunoglobulin Constant-1 (C1)-set domain; The members here are composed of C1-set domains, ... |
392-489 | 1.00e-14 | |||||
Immunoglobulin Constant-1 (C1)-set domain; The members here are composed of C1-set domains, classical Ig-like domains resembling the antibody constant domain. Members of the IgC1 family are components of immunoglobulin, T-cell receptors, CD1 cell surface glycoproteins, secretory glycoproteins A/C, and major histocompatibility complex (MHC) class I/II molecules. In immunoglobulins, each chain is composed of one variable domain (IgV) and one or more IgC domains. These names reflect the fact that the variability in sequences is higher in the variable domain than in the constant domain. The IgV domain is responsible for antigen binding, while the IgC domain is involved in oligomerization and molecular interactions. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other strands by G, F, C, and C'. Pssm-ID: 409354 Cd Length: 95 Bit Score: 69.80 E-value: 1.00e-14
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| IgC1_CH1_IgEG | cd21817 | CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin heavy epsilon and ... |
499-584 | 2.81e-14 | |||||
CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin heavy epsilon and gamma chain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin constant-1 set domain of epsilon and gamma chains. It belongs to a family composed of the first immunoglobulin constant-1 set domain of alpha, delta, epsilon, gamma, and mu heavy chains. This domain is found on the Fab antigen-binding fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. This group belongs to the C1-set of IgSF domains, which are classical Ig-like domains resembling the antibody constant domain. C1-set domains are found almost exclusively in molecules involved in the immune system, such as in immunoglobulin light and heavy chains, in the major histocompatibility complex (MHC) class I and II complex molecules, and in various T-cell receptors. Pssm-ID: 409622 Cd Length: 94 Bit Score: 68.63 E-value: 2.81e-14
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| IgC1_CH1_IgADEGM | cd04985 | CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, delta, ... |
499-584 | 5.04e-14 | |||||
CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, delta, epsilon, gamma, and mu chains; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin constant-1 set domain of alpha, delta, epsilon, gamma, and mu heavy chains. This domain is found on the Fab antigen-binding fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. This group belongs to the C1-set of IgSF domains, which are classical Ig-like domains resembling the antibody constant domain. C1-set domains are found almost exclusively in molecules involved in the immune system, such as in immunoglobulin light and heavy chains, in the major histocompatibility complex (MHC) class I and II complex molecules, and in various T-cell receptors. Pssm-ID: 409374 Cd Length: 98 Bit Score: 68.00 E-value: 5.04e-14
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| IgC1_CH2_IgE | cd05847 | CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin E (IgE); member of ... |
499-585 | 5.08e-14 | |||||
CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin E (IgE); member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the second constant domain of the heavy chain of immunoglobulin E (IgE). The basic structure of immunoglobulin (Ig) molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta, and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). The different classes of antibodies vary in their heavy chains; the IgE class has the epsilon type. This domain (Cepsilon2) of IgE is in place of the flexible hinge region found in IgG. Pssm-ID: 409434 Cd Length: 97 Bit Score: 67.82 E-value: 5.08e-14
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| IgC1_TCR_beta | cd05769 | T cell receptor (TCR) beta chain constant immunoglobulin domain; member of the C1-set of Ig ... |
497-586 | 1.75e-13 | |||||
T cell receptor (TCR) beta chain constant immunoglobulin domain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the T cell receptor (TCR) beta chain constant immunoglobulin domain. TCRs mediate antigen recognition by T lymphocytes, and are composed of alpha and beta, or gamma and delta, polypeptide chains with variable (V) and constant (C) regions. This group includes the variable domain of the beta chain. Alpha/beta TCRs recognize antigen as peptide fragments presented by major histocompatibility complex (MHC) molecules. The antigen binding site is formed by the variable domains of the alpha and beta chains, located at the N-terminus of each chain. Alpha/beta TCRs recognize antigens differently from gamma/delta TCRs. Pssm-ID: 409426 [Multi-domain] Cd Length: 116 Bit Score: 67.02 E-value: 1.75e-13
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| IgC1_L | cd07699 | Immunoglobulin light chain Constant domain; member of the C1-set of Ig superfamily (IgSF) ... |
391-491 | 6.19e-12 | |||||
Immunoglobulin light chain Constant domain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig) light chain constant (C) domain. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. In Ig, each chain is composed of one variable domain (IgV) and one or more constant domains (IgC); these names reflect the fact that the variability in sequences is higher in the variable domain than in the constant domain. There are five types of heavy chains (alpha, gamma, delta, epsilon, and mu), which determine the type of immunoglobulin: IgA, IgG, IgD, IgE, and IgM, respectively. In higher vertebrates, there are two types of light chain, designated kappa and lambda, which seem to be functionally identical, and can associate with any of the heavy chains. Pssm-ID: 409496 Cd Length: 99 Bit Score: 62.09 E-value: 6.19e-12
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| IgC1_SIRP_domain_3 | cd16085 | Signal-regulatory protein (SIRP) immunoglobulin-like domain 3; member of the C1-set of Ig ... |
505-583 | 1.42e-11 | |||||
Signal-regulatory protein (SIRP) immunoglobulin-like domain 3; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig)-like domain in Signal-Regulatory Protein (SIRP), domain 3 (C1 repeat 2). The SIRPs belong to the "paired receptors" class of membrane proteins that comprise several genes coding for proteins with similar extracellular regions but very different transmembrane/cytoplasmic regions with different (activating or inhibitory) signaling potentials. They are commonly on NK cells, but are also on many myeloid cells. Their extracellular region contains three Immunoglobulin superfamily domains a single V-set and two C1-set IgSF domains. Their cytoplasmic tails that contain either ITIMs or transmembrane regions that have positively charged residues that allow an association with adaptor proteins, such as DAP12/KARAP, containing ITAMs. There are 3 distinct SIRP members: alpha, beta, and gamma. SIRP alpha (also known as CD172a or SRC homology 2 domain-containing protein tyrosine phosphatase substrate 1/Shps-1) is a membrane receptor that interacts with a ligand CD47 expressed on many cells and gives an inhibitory signal through immunoreceptor tyrosine-based inhibition motifs in the cytoplasmic region that interact with phosphatases SHP-1 and SHP-2. SIRP beta has a short cytoplasmic region and associates with a transmembrane adapter protein DAP12 containing immunoreceptor tyrosine-based activation motifs to give an activating signal. SIRP gamma contains a very short cytoplasmic region lacking obvious signaling motifs but also binds CD47, but with much less affinity. Pssm-ID: 409507 Cd Length: 96 Bit Score: 60.90 E-value: 1.42e-11
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| IgC1_CH2_IgE | cd05847 | CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin E (IgE); member of ... |
391-481 | 3.60e-11 | |||||
CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin E (IgE); member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the second constant domain of the heavy chain of immunoglobulin E (IgE). The basic structure of immunoglobulin (Ig) molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta, and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). The different classes of antibodies vary in their heavy chains; the IgE class has the epsilon type. This domain (Cepsilon2) of IgE is in place of the flexible hinge region found in IgG. Pssm-ID: 409434 Cd Length: 97 Bit Score: 59.73 E-value: 3.60e-11
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| IgC1_CD1 | cd21029 | Immunoglobulin domain of Cluster of Differentiation (CD) 1; member of the C1-set of Ig ... |
512-585 | 6.96e-11 | |||||
Immunoglobulin domain of Cluster of Differentiation (CD) 1; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin domain of Cluster of Differentiation (CD) 1. CD1 family of transmembrane glycoproteins, are structurally related to the major histocompatibility complex (MHC) proteins and form heterodimers with beta-2-microglobulin. They mediate the presentation of primarily lipid and glycolipid antigens of self or microbial origin to T cells. The human genome contains five CD1 family genes (CD1a, CD1b, CD1c, CD1d, and CD1e) organized in a cluster on chromosome 1. The CD1 family members are thought to differ in their cellular localization and specificity for particular lipid ligands. CD1a localizes to the plasma membrane and to recycling vesicles of the early endocytic system. Alternative splicing results in multiple transcript variants. Immunoglobulin (Ig) domain of major histocompatibility complex (MHC) class I alpha chain. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. C1-set Ig domains have one beta sheet that is formed by strands A, B, E, and D and the other strands by G, F, C, and C'. Pssm-ID: 409620 Cd Length: 93 Bit Score: 58.87 E-value: 6.96e-11
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| IgC1_CH2_Mu | cd16093 | CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin mu chain; member ... |
391-490 | 3.75e-10 | |||||
CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin mu chain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin constant domain (IgC) of mu heavy chains. This domain is found on the Fc fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. Pssm-ID: 409513 Cd Length: 99 Bit Score: 57.02 E-value: 3.75e-10
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| IgC1_CH1_IgM | cd21819 | CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin heavy mu chain; ... |
499-584 | 4.79e-10 | |||||
CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin heavy mu chain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin constant-1 set domain of mu chains. It belongs to a family composed of the first immunoglobulin constant-1 set domain of alpha, delta, epsilon, gamma, and mu heavy chains. This domain is found on the Fab antigen-binding fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. This group belongs to the C1-set of IgSF domains, which are classical Ig-like domains resembling the antibody constant domain. C1-set domains are found almost exclusively in molecules involved in the immune system, such as in immunoglobulin light and heavy chains, in the major histocompatibility complex (MHC) class I and II complex molecules, and in various T-cell receptors. Pssm-ID: 409624 Cd Length: 95 Bit Score: 56.57 E-value: 4.79e-10
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| IgC1_CH1_IgA | cd21818 | CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin heavy alpha chain; ... |
499-582 | 1.18e-09 | |||||
CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin heavy alpha chain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin constant-1 set domain of alpha chains. It belongs to a family composed of the first immunoglobulin constant-1 set domain of alpha, epsilon, gamma, and mu heavy chains. This domain is found on the Fab antigen-binding fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. This group belongs to the C1-set of IgSF domains, which are classical Ig-like domains resembling the antibody constant domain. C1-set domains are found almost exclusively in molecules involved in the immune system, such as in immunoglobulin light and heavy chains, in the major histocompatibility complex (MHC) class I and II complex molecules, and in various T-cell receptors. Pssm-ID: 409623 Cd Length: 94 Bit Score: 55.59 E-value: 1.18e-09
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| IgC1_Tapasin_R | cd05771 | Tapasin-R immunoglobulin-like domain; member of the C1-set of Ig superfamily (IgSF) domains; ... |
499-585 | 3.79e-09 | |||||
Tapasin-R immunoglobulin-like domain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin-like domain on Tapasin-R. Tapasin is a V-C1 (variable-constant) immunoglobulin superfamily molecule present in the endoplasmic reticulum (ER), where it links MHC class I molecules to the transporter associated with antigen processing (TAP). Tapasin-R is a tapasin-related protein that contains similar structural motifs to Tapasin, with some marked differences, especially in the V domain, transmembrane and cytoplasmic regions. The majority of Tapasin-R is located within the ER; however, there may be some expression of Tapasin-R at the cell surface. Tapasin-R lacks an obvious ER retention signal. Pssm-ID: 409428 Cd Length: 100 Bit Score: 54.42 E-value: 3.79e-09
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| PRK13773 | PRK13773 | formimidoylglutamase; Provisional |
21-298 | 4.80e-09 | |||||
formimidoylglutamase; Provisional Pssm-ID: 237499 Cd Length: 324 Bit Score: 58.22 E-value: 4.80e-09
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| PLN02615 | PLN02615 | arginase |
49-280 | 6.71e-09 | |||||
arginase Pssm-ID: 178224 Cd Length: 338 Bit Score: 57.95 E-value: 6.71e-09
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| IgC1_MHC_II_alpha | cd05767 | Class II major histocompatibility complex (MHC) alpha chain immunoglobulin domain; member of ... |
518-585 | 1.81e-08 | |||||
Class II major histocompatibility complex (MHC) alpha chain immunoglobulin domain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig) domain of the major histocompatibility complex (MHC) class II alpha chain. MHC class II molecules play a key role in the initiation of the antigen-specific immune reponse. These molecules have been shown to be expressed constitutively on the cell surface of professional antigen-presenting cells (APCs), including B-lymphocytes, monocytes, and macrophages in both humans and mice. The expression of these molecules has been shown to be induced in nonprofessional APCs such as keratinocyctes, and they are also expressed on the surface of activated human T cells and on T cells from other species. The MHC II molecules present antigenic peptides to CD4(+) T-lymphocytes. These peptides derive mostly from proteolytic processing via the endocytic pathway, of antigens internalized by the APC. These peptides bind to the MHC class II molecules in the endosome before they are transported to the cell surface. MHC class II molecules are heterodimers, comprised of two similarly-sized membrane-spanning chains, alpha and beta. Each chain had two globular domains (N- and C-terminal), and a membrane-anchoring transmembrane segment. The two chains form a compact four-domain structure. The peptide-binding site is a cleft in the structure. Pssm-ID: 409424 Cd Length: 95 Bit Score: 52.31 E-value: 1.81e-08
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| IgC1_beta2m | cd05770 | Class I major histocompatibility complex (MHC) beta-2-microglobulin; member of the C1-set of ... |
500-585 | 2.32e-08 | |||||
Class I major histocompatibility complex (MHC) beta-2-microglobulin; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin-like domain in beta-2-microglobulin (beta2m). Beta2m is the non-covalently bound light chain of the human class I major histocompatibility complex (MHC-I). Beta2m is structured as a beta-sandwich domain composed of two facing beta-sheets (four stranded and three stranded), that is typical of the C-type immunoglobulin superfamily. This structure is stabilized by an intramolecular disulfide bridge connecting two Cys residues in the facing beta-sheets. In vivo, MHC-I continuously exposes beta2m on the cell surface, where it may be released to plasmatic fluids, transported to the kidneys, degraded, and finally excreted. Pssm-ID: 409427 Cd Length: 94 Bit Score: 51.71 E-value: 2.32e-08
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| IgC1_MHC_II_beta | cd05766 | Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain; member of ... |
497-585 | 5.49e-08 | |||||
Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig) domain of major histocompatibility complex (MHC) class II beta chain. MHC class II molecules play a key role in the initiation of the antigen-specific immune reponse. These molecules have been shown to be expressed constitutively on the cell surface of professional antigen-presenting cells (APCs), including B-lymphocytes, monocytes, and macrophages in both humans and mice. The expression of these molecules has been shown to be induced in nonprofessional APCs such as keratinocyctes and they are also expressed on the surface of activated human T cells and on T cells from other species. The MHC II molecules present antigenic peptides to CD4(+) T-lymphocytes. These peptides derive mostly from proteolytic processing via the endocytic pathway of antigens internalized by the APC. These peptides bind to the MHC class II molecules in the endosome before they are transported to the cell surface. MHC class II molecules are heterodimers, comprised of two similarly-sized membrane-spanning chains, alpha and beta. Each chain has two globular domains (N- and C-terminal) and a membrane-anchoring transmembrane segment. The two chains form a compact four-domain structure. The peptide-binding site is a cleft in the structure. Pssm-ID: 409423 Cd Length: 96 Bit Score: 50.79 E-value: 5.49e-08
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| IgC1_MHC_II_beta_HLA-DQ_I-A | cd21001 | Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of ... |
498-585 | 1.61e-07 | |||||
Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of histocompatibility antigen (HLA) DQ and I-A; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of human histocompatibility antigen (HLA) DQ and mouse I-A. Three genetically distinct isotypes of class II MHC molecules are found in humans (HLA-DR, HLA-DQ, and HLA-DP), and two in mice (I-E and I-A). I-A and I-E have the same basic features insofar as peptide loading and presentation, they differ in that each interacts with distinctly different sets of peptides, and in the incidence of deletion of their genes. A structural understanding of the similarities and differences between I-A and I-E may help with understanding their roles in peptide presentation and T cell activation. Mouse I-Ag7 has a genetic susceptibility to autoimmune diabetes due to its small, uncharged amino acid residue at position 57 of their beta chain which results in the absence of a salt bridge between beta 57 and Arg alpha 76, which is adjacent to the P9 pocket of the peptide-binding groove. Human HLA-DR, -DQ, and -DP are about 70% similar to each other. HLA-DQ (DQ) is a cell surface receptor protein found on antigen presenting cells. It is an alphabeta heterodimer of type MHC class II. The alpha and beta chains are encoded by two loci, HLA-DQA1 and HLA-DQB1, that are adjacent to each other on chromosome band 6p21.3. A person often produces two alpha-chain and two beta chain variants and thus 4 isoforms of DQ. HLA-DQ is involved in the autoimmune diseases celiac disease and diabetes mellitus type. DQ is one of several antigens involved in rejection of organ transplants. DQ2 is encoded by the HLA-DQB1*02 allele group. DQ6 is encoded by the HLA-DQB1*06 allele group. DQ2 beta-chains combine with alpha-chains, encoded by genetically linked HLA-DQA1 alleles, to form the cis-haplotype isoforms. These isoforms, nicknamed DQ2.2 and DQ2.5, are also encoded by the DQA1*0201 and DQA1*0501 genes, respectively. DQ6 beta-chains combine with alpha-chains, encoded by genetically linked HLA-DQA1 alleles, to form the cis-haplotype isoforms. For DQ6, however, cis-isoform pairing only occurs with DQ1 alpha-chains. There are many haplotypes of DQ6. Susceptibility to Leptospirosis infection was found associated with undifferentiated DQ6. DQ8 is determined by the antibody recognition of beta8 and this generally detects the gene product of DQB1*0302. DQ8 is commonly linked to autoimmune disease in the human population. DQ8 is the second most predominant isoform linked to celiac disease and the DQ most linked to Type 1 diabetes. DQ8 increases the risk for rheumatoid arthritis and is linked to the primary risk locus for RA, HLA-DR4. DR4 also plays an important role in Type 1 diabetes. DQ8 is a split antigen of the DQ3 broad antigen. MHC class II molecules play a key role in the initiation of the antigen-specific immune response. They are expressed constitutively on the cell surface of professional antigen-presenting cells (APCs), including B-lymphocytes, monocytes, and macrophages in both humans and mice, and induced in nonprofessional APCs, such as keratinocyctes; they are expressed on the surface of activated human T cells and on T cells from other species. MHC II molecules present antigenic peptides to CD4(+) T-lymphocytes; these peptides derive mostly from proteolytic processing via the endocytic pathway, of antigens internalized by the APC, and bind to the MHC class II molecules in the endosome before they are transported to the cell surface. MHC class II molecules are heterodimers, comprised of two similarly-sized membrane-spanning chains, alpha and beta. Each chain had two globular domains (N- and C-terminal), and a membrane-anchoring transmembrane segment. The two chains form a compact four-domain structure. The peptide-binding site is a cleft in the structure. Pssm-ID: 409592 Cd Length: 97 Bit Score: 49.34 E-value: 1.61e-07
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| IgC1_MHC_II_beta_HLA-DM | cd21002 | Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of ... |
496-585 | 1.62e-07 | |||||
Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of histocompatibility antigen (HLA) DM; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of histocompatibility antigen (HLA) DM. Human HLA-DM plays a critical role in antigen presentation to CD4 T cells by catalyzing the exchange of peptides bound to MHC class II molecules. Type 1 diabetes is correlated with DM activation and it is also implicated in viral infections such as herpes simplex virus, celiac disease, multiple sclerosis, other autoimmune diseases, and leukemia. MHC class II molecules play a key role in the initiation of the antigen-specific immune reponse. These molecules have been shown to be expressed constitutively on the cell surface of professional antigen-presenting cells (APCs), including B-lymphocytes, monocytes, and macrophages in both humans and mice. The expression of these molecules has been shown to be induced in nonprofessional APCs such as keratinocyctes, and they are expressed on the surface of activated human T cells and on T cells from other species. The MHC II molecules present antigenic peptides to CD4(+) T-lymphocytes. These peptides derive mostly from proteolytic processing via the endocytic pathway, of antigens internalized by the APC. These peptides bind to the MHC class II molecules in the endosome before they are transported to the cell surface. MHC class II molecules are heterodimers, comprised of two similarly-sized membrane-spanning chains, alpha and beta. Each chain had two globular domains (N- and C-terminal), and a membrane-anchoring transmembrane segment. The two chains form a compact four-domain structure. The peptide-binding site is a cleft in the structure. Pssm-ID: 409593 Cd Length: 97 Bit Score: 49.54 E-value: 1.62e-07
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| IgC1_MHC_II_beta_HLA-DR | cd21000 | Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of ... |
498-585 | 2.15e-07 | |||||
Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of histocompatibility antigen (HLA) DR; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of histocompatibility antigen (HLA) DR. HLA-DR is an MHC class II cell surface receptor encoded by the human leukocyte antigen complex on chromosome 6 region 6p21.31. HLA-DR is also involved in several autoimmune conditions, disease susceptibility, and disease resistance including seronegative-rheumatoid arthritis, penicillamine-induced myasthenia, schizophrenia, Goodpasture syndrome, systemic lupus erythematosus, Alzheimers, tuberculoid leprosy, and Hashimoto's thyroiditis. HLA-DR molecules are upregulated in response to signaling. HLA-DR is an alphabeta heterodimer cell surface receptor, each subunit of which contains two extracellular domains, a membrane-spanning domain, and a cytoplasmic tail. Both alpha and beta chains are anchored in the membrane. The DR beta chain is encoded by 4 loci, however no more than 3 functional loci are present in a single individual, and no more than two on a single chromosome. Sometimes an individual may only possess 2 copies of the same locus, DRB1*. The HLA-DRB1 locus is ubiquitous and encodes a very large number of functionally variable gene products (HLA-DR1 to HLA-DR17). The HLA-DRB3 locus encodes the HLA-DR52 specificity, is moderately variable and is variably associated with certain HLA-DRB1 types. The HLA-DRB4 locus encodes the HLA-DR53 specificity, has some variation, and is associated with certain HLA-DRB1 types. The HLA-DRB5 locus encodes the HLA-DR51 specificity, which is typically invariable, and is linked to the HLA-DR2 types. Three genetically distinct isotypes of class II MHC molecules are found in humans (HLA-DR, HLA-DQ, and HLA-DP), and two in mice (I-E and I-A). MHC class II molecules play a key role in the initiation of the antigen-specific immune reponse. These molecules have been shown to be expressed constitutively on the cell surface of professional antigen-presenting cells (APCs), including B-lymphocytes, monocytes, and macrophages in both humans and mice. The expression of these molecules has been shown to be induced in nonprofessional APCs such as keratinocyctes, and they are expressed on the surface of activated human T cells and on T cells from other species. The MHC II molecules present antigenic peptides to CD4(+) T-lymphocytes. These peptides derive mostly from proteolytic processing via the endocytic pathway, of antigens internalized by the APC. These peptides bind to the MHC class II molecules in the endosome before they are transported to the cell surface. MHC class II molecules are heterodimers, comprised of two similarly-sized membrane-spanning chains, alpha and beta. Each chain had two globular domains (N- and C-terminal), and a membrane-anchoring transmembrane segment. The two chains form a compact four-domain structure. The peptide-binding site is a cleft in the structure. Pssm-ID: 409591 Cd Length: 96 Bit Score: 49.23 E-value: 2.15e-07
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| IgC1_MHC_I_alpha3 | cd07698 | Class I major histocompatibility complex (MHC) alpha chain, alpha3 immunoglobulin domain; ... |
505-590 | 3.00e-07 | |||||
Class I major histocompatibility complex (MHC) alpha chain, alpha3 immunoglobulin domain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig) domain of major histocompatibility complex (MHC) class I alpha chain. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. Pssm-ID: 409495 Cd Length: 92 Bit Score: 48.38 E-value: 3.00e-07
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| IgC1_TCR_beta | cd05769 | T cell receptor (TCR) beta chain constant immunoglobulin domain; member of the C1-set of Ig ... |
390-502 | 3.04e-07 | |||||
T cell receptor (TCR) beta chain constant immunoglobulin domain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the T cell receptor (TCR) beta chain constant immunoglobulin domain. TCRs mediate antigen recognition by T lymphocytes, and are composed of alpha and beta, or gamma and delta, polypeptide chains with variable (V) and constant (C) regions. This group includes the variable domain of the beta chain. Alpha/beta TCRs recognize antigen as peptide fragments presented by major histocompatibility complex (MHC) molecules. The antigen binding site is formed by the variable domains of the alpha and beta chains, located at the N-terminus of each chain. Alpha/beta TCRs recognize antigens differently from gamma/delta TCRs. Pssm-ID: 409426 [Multi-domain] Cd Length: 116 Bit Score: 49.30 E-value: 3.04e-07
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| IgC1_CH2_IgD | cd16084 | CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin delta chain; ... |
501-585 | 9.90e-07 | |||||
CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin delta chain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin constant domain (IgC) in delta heavy chains. The IgC family includes immunoglobulin, T-cell receptors, CD1 cell surface glycoproteins, secretory glycoproteins A/C, and major histocompatibility complex (MHC) class I/II molecules. In immunoglobulins, each chain is composed of one variable domain (IgV) and one or more IgC domains. These names reflect the fact that the variability in sequences is higher in the variable domain than in the constant domain. The IgV domain is responsible for antigen binding, and the IgC domain is involved in oligomerization and molecular interactions. Pssm-ID: 409506 Cd Length: 97 Bit Score: 47.43 E-value: 9.90e-07
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| IgC1_MHC_II_beta_HLA-DP | cd21003 | Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of ... |
498-585 | 4.40e-06 | |||||
Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of histocompatibility antigen (HLA) DP; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of histocompatibility antigen (HLA) DP. HLA class II histocompatibility antigen, DP(W2) beta chain is a protein that in humans is encoded by the HLA-DPB1 gene. It plays a central role in the immune system by presenting peptides derived from extracellular proteins. MHC class II molecules are encoded by three different loci, HLA-DR, -DQ, and -DP, which are about 70% similar to each other. HLA-DP is an alphabeta heterodimer cell-surface receptor. Each DP subunit (alpha-subunit, beta-subunit) is composed of a alpha-helical N-terminal domain, an IgG-like beta sheet, a membrane spanning domain, and a cytoplasmic domain. The alpha-helical domain forms the sides of the peptide binding groove. The beta sheet regions form the base of the binding groove and the bulk of the molecule as well as the inter-subunit (non-covalent) binding region. Individuals carrying the MHCII allele, HLA-DP2, are at risk for chronic beryllium disease (CBD), a debilitating inflammatory lung condition caused by the reaction of CD4 T cells to inhaled beryllium. MHC class II molecules play a key role in the initiation of the antigen-specific immune reponse. These molecules have been shown to be expressed constitutively on the cell surface of professional antigen-presenting cells (APCs), including B-lymphocytes, monocytes, and macrophages in both humans and mice. The expression of these molecules has been shown to be induced in nonprofessional APCs such as keratinocyctes, and they are expressed on the surface of activated human T cells and on T cells from other species. The MHC II molecules present antigenic peptides to CD4(+) T-lymphocytes. These peptides derive mostly from proteolytic processing via the endocytic pathway, of antigens internalized by the APC. These peptides bind to the MHC class II molecules in the endosome before they are transported to the cell surface. MHC class II molecules are heterodimers, comprised of two similarly-sized membrane-spanning chains, alpha and beta. Each chain had two globular domains (N- and C-terminal), and a membrane-anchoring transmembrane segment. The two chains form a compact four-domain structure. The peptide-binding site is a cleft in the structure. Pssm-ID: 409594 Cd Length: 96 Bit Score: 45.52 E-value: 4.40e-06
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| IgC1_MHC_II_beta_I-E | cd20998 | Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of ... |
496-590 | 6.12e-06 | |||||
Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of histocompatibility antigen (HLA) I-E; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class II major histocompatibility complex (MHC) beta chain immunoglobulin domain of histocompatibility antigen (HLA) I-E. Three genetically distinct isotypes of class II MHC molecules are found in humans (HLA-DR, HLA-DQ, and HLA-DP), and two in mice (I-E and I-A). I-A and I-E molecules have the same basic features insofar as peptide loading and presentation, although each interacts with distinctly different sets of peptides. They also differ in that there is a relatively high incidence of deletion of the I-E gene in both inbred strains of mice as well as wild mice and the lack of the reverse situation i.e. the deletion of I-A genes. A detailed structural understanding of the similarities and differences between I-A and the paralogous I-E could help illuminate the respective roles these molecules play in peptide presentation and T cell activation. Mouse I-Ag7 has a genetic susceptibility to autoimmune diabetes due to its small, uncharged amino acid residue at position 57 of their beta chain which results in the absence of a salt bridge between beta 57 and Arg alpha 76, which is adjacent to the P9 pocket of the peptide-binding groove. MHC class II molecules play a key role in the initiation of the antigen-specific immune reponse. These molecules have been shown to be expressed constitutively on the cell surface of professional antigen-presenting cells (APCs), including B-lymphocytes, monocytes, and macrophages in both humans and mice. The expression of these molecules has been shown to be induced in nonprofessional APCs such as keratinocyctes, and they are expressed on the surface of activated human T cells and on T cells from other species. The MHC II molecules present antigenic peptides to CD4(+) T-lymphocytes. These peptides derive mostly from proteolytic processing via the endocytic pathway, of antigens internalized by the APC. These peptides bind to the MHC class II molecules in the endosome before they are transported to the cell surface. MHC class II molecules are heterodimers, comprised of two similarly-sized membrane-spanning chains, alpha and beta. Each chain had two globular domains (N- and C-terminal), and a membrane-anchoring transmembrane segment. The two chains form a compact four-domain structure. The peptide-binding site is a cleft in the structure. Pssm-ID: 409590 Cd Length: 99 Bit Score: 45.15 E-value: 6.12e-06
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| IgC1_MHC_Ia_H2Db_H2Ld | cd21018 | Class Ia major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte ... |
512-585 | 7.70e-06 | |||||
Class Ia major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte antigen (HLA) H2Db and H2Ld; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ia major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte antigen (HLA) H2Db and H2Ld. H-2Ld complexed with peptide QL9 (or p2Ca) and complexed with influenza virus peptide NP366-374 (ASNEN-METM), respectively are high-affinity alloantigens for the 2C T cell receptor (TCR). The a1-a2 super domains of H-2Ld, H-2Db, and H-2Kb closely superimpose. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. Pssm-ID: 409609 Cd Length: 95 Bit Score: 44.73 E-value: 7.70e-06
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| IgC1_MHC_1b_Qa-1b | cd21820 | Class Ib major histocompatibility complex (MHC) immunoglobulin domain of Qa-1b; member of the ... |
493-585 | 1.05e-05 | |||||
Class Ib major histocompatibility complex (MHC) immunoglobulin domain of Qa-1b; member of the C1-set of Ig superfamily (IgSF) domains; The non-classical mouse MHC class I (MHC-I) molecule Qa-1b is a non-polymorphic MHC molecule with an important function in innate immunity. It binds and presents signal peptides of classical MHC-I molecules at the cell surface and, as such, act as an indirect sensor for the normal expression of MHC-I molecules. This signal peptide dominantly accommodated in the groove of Qa-1b is called Qdm, for Qa-1 determinant modifier, and its amino acid sequence AMAPRTLLL is highly conserved among mammalian species. The Qdm/Qa-1b complex serves as a ligand for the germ-line encoded heterodimeric CD94/NKG2A receptors expressed on natural killer (NK) cells and activated CD8+ T cells and transduces inhibitory signals to these lymphocytes. Thus, upon binding, Qa-1b signals NK cells not to engage in cell lysis. The molecular basis of Qa-1b function is unclear. Pssm-ID: 409625 Cd Length: 98 Bit Score: 44.37 E-value: 1.05e-05
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| IgC1_CH1_IgADEGM | cd04985 | CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, delta, ... |
390-489 | 2.15e-05 | |||||
CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin heavy alpha, delta, epsilon, gamma, and mu chains; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin constant-1 set domain of alpha, delta, epsilon, gamma, and mu heavy chains. This domain is found on the Fab antigen-binding fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. This group belongs to the C1-set of IgSF domains, which are classical Ig-like domains resembling the antibody constant domain. C1-set domains are found almost exclusively in molecules involved in the immune system, such as in immunoglobulin light and heavy chains, in the major histocompatibility complex (MHC) class I and II complex molecules, and in various T-cell receptors. Pssm-ID: 409374 Cd Length: 98 Bit Score: 43.35 E-value: 2.15e-05
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| C2-set_2 | pfam08205 | CD80-like C2-set immunoglobulin domain; These domains belong to the immunoglobulin superfamily. |
503-586 | 2.50e-05 | |||||
CD80-like C2-set immunoglobulin domain; These domains belong to the immunoglobulin superfamily. Pssm-ID: 400489 Cd Length: 89 Bit Score: 43.18 E-value: 2.50e-05
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| IgC1_MHC_Ia_RT1-Aa | cd21015 | Class Ia major histocompatibility complex (MHC) immunoglobulin domain of RT1-Aa; member of the ... |
503-592 | 2.64e-05 | |||||
Class Ia major histocompatibility complex (MHC) immunoglobulin domain of RT1-Aa; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ia major histocompatibility complex (MHC) immunoglobulin domain of RT1-Aa. While most mammalian species transport these peptides into the ER via a single allele of TAP, rats have evolved different TAPs, TAP-A and TAP-B, RT1-Aa and RT1-A1c, which are associated with TAP-A and TAP-B. The rat MHC class Ia molecule RT1-Aa has the unusual capacity to bind long peptides ending in arginine, such as MTF-E, a thirteen-residue, maternally transmitted minor histocompatibility antigen. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. Pssm-ID: 409606 Cd Length: 95 Bit Score: 43.22 E-value: 2.64e-05
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| IgC1_MHC_Ib_Qa-1 | cd21013 | Class Ib major histocompatibility complex (MHC) immunoglobulin domain of Qa-1 and similar ... |
493-585 | 2.85e-05 | |||||
Class Ib major histocompatibility complex (MHC) immunoglobulin domain of Qa-1 and similar proteins; member of the C1-set of Ig superfamily (IgSF) domains; Class Ib major histocompatibility complex (MHC) immunoglobulin domain of Qa-1 and similar proteins. Qa-1 presents hydrophobic peptides including Qdm derived from the leader sequence of classical MHC I molecules for immune surveillance by NK cells. Qa-1 bound peptides derived from the TCR Vbeta8.2 of activated T cells also activates CD8+ regulatory T cells to control autoimmunity and maintain self-tolerance. Four allotypes of Qa-1 (Qa-1a-d) are expressed that are highly conserved in sequence but have several variations that could affect peptide binding to Qa-1 or TCR recognition. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. Pssm-ID: 409604 Cd Length: 97 Bit Score: 43.19 E-value: 2.85e-05
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| IgC1_CH1_IgD | cd16092 | CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin delta chain; member ... |
516-584 | 3.00e-05 | |||||
CH1 domain (first constant Ig domain of the heavy chain) in immunoglobulin delta chain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin constant-1 set domain of delta chains. It belongs to a family composed of the first immunoglobulin constant-1 set domain of alpha, delta, epsilon, gamma, and mu heavy chains. This domain is found on the Fab antigen-binding fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. This group belongs to the C1-set of IgSF domains, which are classical Ig-like domains resembling the antibody constant domain. C1-set domains are found almost exclusively in molecules involved in the immune system, such as in immunoglobulin light and heavy chains, in the major histocompatibility complex (MHC) class I and II complex molecules, and in various T-cell receptors. Pssm-ID: 319341 Cd Length: 96 Bit Score: 42.90 E-value: 3.00e-05
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| IGc1 | smart00407 | Immunoglobulin C-Type; |
412-481 | 4.57e-05 | |||||
Immunoglobulin C-Type; Pssm-ID: 214651 Cd Length: 75 Bit Score: 41.92 E-value: 4.57e-05
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| IgC1_MHC_Ia_HLA-F | cd21023 | Class Ib major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte ... |
493-585 | 7.84e-05 | |||||
Class Ib major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte antigen (HLA) F; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ib major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte antigen alpha chain F (HLA-F). HLA-F, encoded by the HLA-F gene in humans, belongs to the non-classical HLA class I heavy chain paralogs. This class I molecule mainly exists as a heterodimer associated with the invariant light chain beta-2-microglobulin. HLA-F molecules can interact with both activating and inhibitory receptors on immune cells, such as NK cells, and can present a diverse panel of peptides. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. Pssm-ID: 409614 Cd Length: 98 Bit Score: 42.11 E-value: 7.84e-05
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| IgC1_MHC_Ia_H-2Dd | cd21020 | Class Ia major histocompatibility complex (MHC) immunoglobulin domain of H2-Dd; member of the ... |
503-585 | 1.23e-04 | |||||
Class Ia major histocompatibility complex (MHC) immunoglobulin domain of H2-Dd; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ia major histocompatibility complex (MHC) immunoglobulin domain of H2-Dd. Mouse MHC is composed of 11 subclasses. It includes the classical MHC class I (MHC-Ia) that comprises H-2D, H-2K and H-2L subclasses, the non-classical MHC class I (MHCIb) that comprises H-2Q, H-2M and H-2T subclasses, the classical MHC class II (MHC-IIa) that includes H-2A(I-A) and H-2E(I-E) subclasses, and the non-classical MHC class II (MHC-IIb) comprises H-2M and H-2O. H-2K, H-2D, and H-2L are 80 to 90% homologous at the amino acid level yet appear to be involved in different recognition reactions and are differentially expressed on lymphoid cells. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. Pssm-ID: 409611 Cd Length: 95 Bit Score: 41.28 E-value: 1.23e-04
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| IgC1_MHC_Ib_T10_T22_like | cd21016 | Class Ib major histocompatibility complex (MHC) immunoglobulin domain of T10, T22, and similar ... |
516-585 | 1.35e-04 | |||||
Class Ib major histocompatibility complex (MHC) immunoglobulin domain of T10, T22, and similar proteins; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ib major histocompatibility complex (MHC) immunoglobulin domain of the murine H-2T-encoded T10, T22, and similar proteins. T10 and T22 are highly related nonclassical major histocompatibility complex (MHC) class Ib proteins that bind to certain gammadelta T cell receptors (TCRs) in the absence of other components. Classical MHC class I (class Ia) molecules participate in immune responses by presenting peptide antigens to cytolytic alpha beta T cells. Many nonclassical MHC class I (class Ib) molecules have distinct antigen-binding capabilities, suggesting that they have evolved for specific tasks that are distinct from those of MHC class Ia. Members of the IgC family are components of immunoglobulin, T-cell receptors, CD1 cell surface glycoproteins, secretory glycoproteins A/C, and major histocompatibility complex (MHC) class I/II molecules. In immunoglobulins, each chain is composed of one variable domain (IgV) and one or more IgC domains. These names reflect the fact that the variability in sequences is higher in the variable domain than in the constant domain. The IgV domain is responsible for antigen binding, and the IgC domain is involved in oligomerization and molecular interactions. Pssm-ID: 409607 Cd Length: 97 Bit Score: 41.24 E-value: 1.35e-04
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| IgC1_MHC_Ia_H-2Kb | cd21019 | Class Ia major histocompatibility complex (MHC) immunoglobulin domain of H-2Kb; member of the ... |
513-585 | 1.35e-04 | |||||
Class Ia major histocompatibility complex (MHC) immunoglobulin domain of H-2Kb; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ia major histocompatibility complex (MHC) immunoglobulin domain of H-2Kb. H-2Kb is an alloantigen for the 2C T cell receptor (TCR). H-2Kb forms a complex with beta-2-microglobulin, and a peptide, including VSV-8 (RGYVYNGL), SEV-9 (FAPGNYPAL), and OVA-8 (SIINFEKL). Comparison of the OVA-8, VSV-8, and SEV-9 complexes with H-2Kb indicates that four side chains (Lys-66, Glu-152, Arg-155, and Trp-167) adopt peptide-specific conformations. H-2Kb paralogs include H-2Db, H-2Kbml and H-2KbI1s. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. Pssm-ID: 409610 Cd Length: 94 Bit Score: 41.25 E-value: 1.35e-04
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| IgC1_MHC_H-2_TLA | cd21012 | H-2 class I histocompatibility complex TLA (thymus leukemia antigen); member of the C1-set of ... |
516-585 | 2.70e-04 | |||||
H-2 class I histocompatibility complex TLA (thymus leukemia antigen); member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the major histocompatibility complex (MHC) H-2 class I histocompatibility complex TLA (thymus leukemia antigen). The murine MHC class I histocompatibility TLA (Thymus leukemia antigen), which is encoded in the T region by T3 and T18 genes, is expressed mainly by intestinal epithelial cells and thymocytes. The murine TLAs are class I, beta-2-microglobulin-associated glycoproteins. The TLA function is not defined by antigen presentation, but rather by its relatively high affinity binding to CD8-alpha-alpha compared with CD8-alpha-beta. The existence of a human homolog for murine TLA remains unresolved. This group is a member of the C1-set Ig domains, which have one beta sheet that is formed by strands A, B, E, and D and the other strands by G, F, C, and C'. Pssm-ID: 409603 Cd Length: 95 Bit Score: 40.48 E-value: 2.70e-04
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| IgC1_MHC_Ib_Qa-2 | cd21014 | Class Ib major histocompatibility complex (MHC) immunoglobulin domain of Qa-2; member of the ... |
516-585 | 2.80e-04 | |||||
Class Ib major histocompatibility complex (MHC) immunoglobulin domain of Qa-2; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ib major histocompatibility complex (MHC) immunoglobulin domain of QA-2. Qa-2 is a nonclassical MHC Ib antigen, which has been implicated in both innate and adaptive immune responses, as well as embryonic development. Qa-2 has an unusual peptide binding specificity in that it requires two dominant C-terminal anchor residues and is capable of associating with a substantially more diverse array of peptide sequences than other nonclassical MHC. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. Pssm-ID: 409605 Cd Length: 94 Bit Score: 40.12 E-value: 2.80e-04
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| IgC1_MHC_Ia_HLA-A | cd21027 | Class Ia major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte ... |
507-585 | 3.12e-04 | |||||
Class Ia major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte antigen (HLA) A; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the class Ia major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte antigen (HLA) A. The classical class I molecules (HLA-A, -B, and -C) are responsible for the presentation of endogenous antigen to CD8+ T cells. The receptor is a heterodimer, and is composed of a heavy alpha chain and smaller beta chain. The alpha chain is encoded by a variant HLA-A gene, and the beta chain (beta-2-microglobulin) is an invariant beta-2-microglobulin molecule. The beta-2-microglobulin protein is coded for by a separate region of the human genome. HLA-A2 is associated with spontaneous abortions, HIV, and Hodgkin lymphoma. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. Pssm-ID: 409618 Cd Length: 95 Bit Score: 40.20 E-value: 3.12e-04
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| IgC1_CH2_IgA | cd04986 | CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin heavy alpha chain; ... |
391-489 | 3.48e-04 | |||||
CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin heavy alpha chain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin constant-1 set domain (IgC) of alpha heavy chains. This domain is found on the Fc fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. This group belongs to the C1-set of IgSF domains, which are classical Ig-like domains resembling the antibody constant domain. C1-set domains are found almost exclusively in molecules involved in the immune system, such as in immunoglobulin light and heavy chains, in the major histocompatibility complex (MHC) class I and II complex molecules, and in various T-cell receptors. Pssm-ID: 409375 Cd Length: 96 Bit Score: 40.06 E-value: 3.48e-04
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| IgC1_MHC_Ib_HLA-E | cd21024 | Class Ib major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte ... |
505-585 | 4.03e-04 | |||||
Class Ib major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte antigen (HLA) E; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ib major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte antigen (HLA) E. HLA-E is the first human class Ib major histocompatibility complex molecule to be crystallized. Like other MHC class I molecules, HLA-E is a heterodimer consisting of an a heavy chain and light chain beta-2-microglobulin. HLA-E is highly conserved and almost nonpolymorphic, and has recently been shown to be the first specialized ligand for natural killer cell receptors. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. Pssm-ID: 409615 Cd Length: 95 Bit Score: 39.77 E-value: 4.03e-04
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| IgC1_CH2_IgA | cd04986 | CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin heavy alpha chain; ... |
498-582 | 4.48e-04 | |||||
CH2 domain (second constant Ig domain of the heavy chain) in immunoglobulin heavy alpha chain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin constant-1 set domain (IgC) of alpha heavy chains. This domain is found on the Fc fragment. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. There are two types of light chains: kappa and lambda; each is composed of a constant domain and a variable domain. There are five types of heavy chains: alpha, delta, epsilon, gamma, and mu, all consisting of a variable domain (VH) with three (alpha, delta and gamma) or four (epsilon and mu) constant domains (CH1 to CH4). Ig molecules are modular proteins, in which the variable and constant domains have clear, conserved sequence patterns. This group belongs to the C1-set of IgSF domains, which are classical Ig-like domains resembling the antibody constant domain. C1-set domains are found almost exclusively in molecules involved in the immune system, such as in immunoglobulin light and heavy chains, in the major histocompatibility complex (MHC) class I and II complex molecules, and in various T-cell receptors. Pssm-ID: 409375 Cd Length: 96 Bit Score: 39.67 E-value: 4.48e-04
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| IgC1_MHC_Ib_HLA-Cw3-4 | cd21025 | Class Ib major histocompatibility complex (MHC) immunoglobulin domain of HLA-Cw3 and HLA-Cw4; ... |
507-585 | 4.67e-04 | |||||
Class Ib major histocompatibility complex (MHC) immunoglobulin domain of HLA-Cw3 and HLA-Cw4; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ib major histocompatibility complex (MHC) immunoglobulin domain of HLA-Cw3 and HLA-Cw4. HLA-C belongs to the MHC class I heavy chain receptors. The C receptor is a heterodimer consisting of a HLA-C mature gene product and beta-2-microglobulin. The mature C chain is anchored in the membrane. MHC Class I molecules, like HLA-C, are expressed in nearly all cells, and present small peptides to the immune system which surveys for non-self peptides. HLA-C is a locus on chromosome 6, which encodes for a large number of HLA-C alleles that are Class-I MHC receptors. Class Ib histocompatibility leukocyte antigens (HLA)-Cw3 and (HLA)-Cw4 are ligands for the natural killer (NK) cell inhibitory receptors KIR2DL2 and KIR2DL1, respectively. HLA-Cw3 and related alleles (HLA-Cw1, -Cw7, and -Cw8) contain Ser77 and Asn80 and interact with KIR that are reactive with the GL183 antibody Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. HLA-Cw4 and related alleles (HLA-Cw2, -Cw5, and -Cw6) have Asn77 and Lys80 and are recognized by KIR reactive with the EB6 15 or HP-3E4 16 antibody. Members of the IgC family are components of immunoglobulin, T-cell receptors, CD1 cell surface glycoproteins, secretory glycoproteins A/C, and major histocompatibility complex (MHC) class I/II molecules. In immunoglobulins, each chain is composed of one variable domain (IgV) and one or more IgC domains. These names reflect the fact that the variability in sequences is higher in the variable domain than in the constant domain. The IgV domain is responsible for antigen binding, and the IgC domain is involved in oligomerization and molecular interactions. Pssm-ID: 409616 Cd Length: 96 Bit Score: 39.79 E-value: 4.67e-04
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| IgC1_MHC_Ia_MIC-A_MIC-B | cd21017 | Class Ia major histocompatibility complex (MHC) immunoglobulin domain of MIC-A and MIC-B; ... |
503-586 | 7.03e-04 | |||||
Class Ia major histocompatibility complex (MHC) immunoglobulin domain of MIC-A and MIC-B; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ia major histocompatibility complex (MHC) immunoglobulin domain of MIC-A and MIC-B. MIC-A and MIC-B are homologs that serve as stress-inducible antigens on epithelial and epithelially derived cells. Both serve as ligands for the widely expressed activating immunoreceptor NKG2D, a C-type lectin-like activating immunoreceptor. MIC-B is very similar in structure to MIC-A and likely interacts with NKG2D in an analogous manner. The interdomain flexibility observed in the MIC-A structures, a feature unique to MIC proteins among MHC class I proteins and homologs, is also displayed by MIC-B, with an interdomain relationship intermediate between the two examples of MIC-A structures. Mapping sequence variations onto the structures of MIC-A and MIC-B reveals patterns completely distinct from those displayed by classical MHC class I proteins, with a number of substitutions falling on positions likely to affect interactions with NKG2D, but with other positions lying distant from the NKG2D binding sites or buried within the core of the proteins. Members of the IgC family are components of immunoglobulin, T-cell receptors, CD1 cell surface glycoproteins, secretory glycoproteins A/C, and major histocompatibility complex (MHC) class I/II molecules. In immunoglobulins, each chain is composed of one variable domain (IgV) and one or more IgC domains. These names reflect the fact that the variability in sequences is higher in the variable domain than in the constant domain. The IgV domain is responsible for antigen binding and the IgC domain is involved in oligomerization and molecular interactions. Pssm-ID: 409608 Cd Length: 95 Bit Score: 39.04 E-value: 7.03e-04
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| IgC1_MHC_Ia_HLA-G | cd21022 | Class Ib major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte ... |
515-585 | 1.10e-03 | |||||
Class Ib major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte antigen (HLA) G; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the Class Ib major histocompatibility complex (MHC) immunoglobulin domain of human leukocyte antigen (HLA) G. HLA-G histocompatibility antigen (also known as human leukocyte antigen G ; HLA-G) is a protein that in humans is encoded by the HLA-G gene. HLA-G belongs to the HLA nonclassical class I heavy chain paralogs. This class I molecule is a heterodimer consisting of a heavy chain and light chain, beta-2-microglobulin. The heavy chain is anchored in the membrane. HLA-G may play a role in immune tolerance in pregnancy, being expressed in the placenta by extravillous trophoblast cells (EVT), while the classical MHC class I genes (HLA-A and HLA-B) are not. Immunoglobulin (Ig) domain of major histocompatibility complex (MHC) class I and class II. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. MHC class II molecules play a key role in the initiation of the antigen-specific immune repose. These molecules have been shown to be expressed constitutively on the cell surface of professional antigen-presenting cells (APCs), including B-lymphocytes, monocytes, and macrophages in both humans and mice. The expression of these molecules has been shown to be induced in nonprofessional APCs such as keratinocyctes, and they are expressed on the surface of activated human T cells and on T cells from other species. The MHC II molecules present antigenic peptides to CD4(+) T-lymphocytes. These peptides derive mostly from proteolytic processing via the endocytic pathway, of antigens internalized by the APC. These peptides bind to the MHC class II molecules in the endosome before they are transported to the cell surface. MHC class II molecules are heterodimers, comprised of two similarly-sized membrane-spanning chains, alpha and beta. Each chain had two globular domains (N- and C-terminal), and a membrane-anchoring transmembrane segment. The two chains form a compact four-domain structure. The peptide-binding site is a cleft in the structure. Pssm-ID: 409613 Cd Length: 94 Bit Score: 38.59 E-value: 1.10e-03
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| Ig | cd00096 | Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ... |
411-484 | 1.31e-03 | |||||
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409353 [Multi-domain] Cd Length: 70 Bit Score: 37.69 E-value: 1.31e-03
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| IgC1_SIRP_domain_2 | cd05772 | Signal-regulatory protein (SIRP) immunoglobulin-like domain 2; member of the C1-set of Ig ... |
516-587 | 2.60e-03 | |||||
Signal-regulatory protein (SIRP) immunoglobulin-like domain 2; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig)-like domain in Signal-Regulatory Protein (SIRP), domain 2 (C1 repeat 1). The SIRPs belong to the "paired receptors" class of membrane proteins that comprise several genes coding for proteins with similar extracellular regions, but very different transmembrane/cytoplasmic regions with different (activating or inhibitory) signaling potentials. They are commonly on NK cells, but are also on many myeloid cells. Their extracellular region contains three Immunoglobulin superfamily domains, a single V-set and two C1-set IgSF domains. Their cytoplasmic tails contain either ITIMs or transmembrane regions that have positively charged residues that allow an association with adaptor proteins, such as DAP12/KARAP, containing ITAMs. There are 3 distinct SIRP members: alpha, beta, and gamma. SIRP alpha (also known as CD172a or SRC homology 2 domain-containing protein tyrosine phosphatase substrate 1/Shps-1) is a membrane receptor that interacts with a ligand CD47 expressed on many cells and gives an inhibitory signal through immunoreceptor tyrosine-based inhibition motifs in the cytoplasmic region that interact with phosphatases SHP-1 and SHP-2. SIRP beta has a short cytoplasmic region and associates with a transmembrane adapter protein DAP12 containing immunoreceptor tyrosine-based activation motifs to give an activating signal. SIRP gamma contains a very short cytoplasmic region lacking obvious signaling motifs, but also binds CD47, but with much less affinity. Pssm-ID: 409429 Cd Length: 102 Bit Score: 37.69 E-value: 2.60e-03
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| IgI_2_Necl-1 | cd07705 | Second immunoglobulin (Ig)-like domain of nectin-like molcule-1 (Necl-1); member of the I-set ... |
494-587 | 2.73e-03 | |||||
Second immunoglobulin (Ig)-like domain of nectin-like molcule-1 (Necl-1); member of the I-set of Ig superfamily domains; The members here are composed of the second immunoglobulin (Ig)-like domain of nectin-like molcule-1 (Necl-1; also known as cell adhesion molecule3 (CADM3)). These nectin-like molecules have similar domain structures to those of nectins. At least five nectin-like molecules have been identified (Necl-1 through Necl-5). These have an extracellular region containing three Ig-like domains, one transmembrane region, and one cytoplasmic region. The N-terminal Ig-like domain of the extracellular region belongs to the V-type subfamily of Ig domains is essential to cell-cell adhesion and plays a part in the interaction with the envelope glycoprotein D of various viruses. Necl-1 and Necl-2 have Ca(2+)-independent homophilic and heterophilic cell-cell adhesion activity. Necl-1 is specifically expressed in neural tissue and is important to the formation of synapses, axon bundles, and myelinated axons. Necl-2 is expressed in a wide variety of tissues and is a putative tumour suppressor gene which is downregulated in aggressive neuroblastoma. Ig domains are likely to participate in ligand binding and recognition. Pssm-ID: 409502 Cd Length: 103 Bit Score: 37.64 E-value: 2.73e-03
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| PHA02865 | PHA02865 | MHC-like TNF binding protein; Provisional |
452-534 | 4.60e-03 | |||||
MHC-like TNF binding protein; Provisional Pssm-ID: 165199 [Multi-domain] Cd Length: 338 Bit Score: 39.46 E-value: 4.60e-03
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| Ig_3 | pfam13927 | Immunoglobulin domain; This family contains immunoglobulin-like domains. |
499-580 | 7.86e-03 | |||||
Immunoglobulin domain; This family contains immunoglobulin-like domains. Pssm-ID: 464046 [Multi-domain] Cd Length: 78 Bit Score: 35.62 E-value: 7.86e-03
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| IgC1_TCR_gamma | cd07697 | T cell receptor (TCR) gamma chain constant immunoglobulin domain; member of the C1-set of Ig ... |
504-587 | 9.81e-03 | |||||
T cell receptor (TCR) gamma chain constant immunoglobulin domain; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig) constant (C) domain of the gamma chain of gamma-delta T-cell receptors (TCRs). TCRs mediate antigen recognition by T lymphocytes and are heterodimers consisting of alpha and beta chains or gamma and delta chains. Each chain contains a variable (V) and a constant (C) region. The majority of T cells contain alpha-beta TCRs, but a small subset contain gamma-delta TCRs. Alpha-beta TCRs recognize antigen as peptide fragments presented by major histocompatibility complex (MHC) molecules. Gamma-delta TCRs recognize intact protein antigens; they recognize protein antigens directly and without antigen processing and MHC independently of the bound peptide. Gamma-delta T cells can also be stimulated by non-peptide antigens such as small phosphate- or amine-containing compounds. Pssm-ID: 409494 Cd Length: 98 Bit Score: 36.08 E-value: 9.81e-03
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