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alpha-protein kinase 2 [Homo sapiens]
List of domain hits
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Name | Accession | Description | Interval | E-value | ||||
Alpha_kinase_ALPK2 | cd16974 | Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called ... |
1887-2125 | 2.78e-167 | ||||
Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called heart alpha-protein kinase (HAK). Little functional information is known about ALPK2. In a three-dimensional colonic-crypt model, it has been identified as crucial for luminal apoptosis and expression of DNA repair-related genes, possibly in the transition of normal colonic crypt to adenoma. The ALPK2 gene may also be a novel candidate gene for inherited hypertension in Dahl rats. ALPK2 contains a C-terminal alpha-kinase domain and two immunoglobulin (Ig)-like domains. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. : Pssm-ID: 341224 Cd Length: 239 Bit Score: 511.67 E-value: 2.78e-167
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IgI_titin_I1-like | cd20951 | Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of ... |
12-105 | 1.09e-44 | ||||
Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin domain I1 of the titin I-band and similar proteins. Titin is a key component in the assembly and functioning of vertebrate striated muscles. By providing connections at the level of individual microfilaments, it contributes to the fine balance of forces between the two halves of the sarcomere. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. The two sheets are linked together by a conserved disulfide bond between B strand and F strand. 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. The Ig I1 domain of the titin I-band is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. : Pssm-ID: 409543 [Multi-domain] Cd Length: 94 Bit Score: 157.20 E-value: 1.09e-44
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IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
1802-1874 | 1.40e-06 | ||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. : Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 48.27 E-value: 1.40e-06
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Name | Accession | Description | Interval | E-value | ||||
Alpha_kinase_ALPK2 | cd16974 | Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called ... |
1887-2125 | 2.78e-167 | ||||
Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called heart alpha-protein kinase (HAK). Little functional information is known about ALPK2. In a three-dimensional colonic-crypt model, it has been identified as crucial for luminal apoptosis and expression of DNA repair-related genes, possibly in the transition of normal colonic crypt to adenoma. The ALPK2 gene may also be a novel candidate gene for inherited hypertension in Dahl rats. ALPK2 contains a C-terminal alpha-kinase domain and two immunoglobulin (Ig)-like domains. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341224 Cd Length: 239 Bit Score: 511.67 E-value: 2.78e-167
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Alpha_kinase | smart00811 | Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic ... |
1905-2125 | 4.37e-60 | ||||
Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional kinases. The family contains myosin heavy chain kinases and Elongation Factor-2 kinase and a bifunctional ion channel. This family is known as the alpha-kinase family. The structure of the kinase domain revealed unexpected similarity to eukaryotic protein kinases in the catalytic core as well as to metabolic enzymes with ATP-grasp domains. Pssm-ID: 214828 Cd Length: 198 Bit Score: 205.28 E-value: 4.37e-60
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Alpha_kinase | pfam02816 | Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic ... |
1926-2125 | 5.07e-52 | ||||
Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional kinases. The family contains myosin heavy chain kinases and Elongation Factor-2 kinase and a bifunctional ion channel. This family is known as the alpha-kinase family. The structure of the kinase domain revealed unexpected similarity to eukaryotic protein kinases in the catalytic core as well as to metabolic enzymes with ATP-grasp domains. Pssm-ID: 460709 Cd Length: 185 Bit Score: 181.76 E-value: 5.07e-52
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IgI_titin_I1-like | cd20951 | Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of ... |
12-105 | 1.09e-44 | ||||
Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin domain I1 of the titin I-band and similar proteins. Titin is a key component in the assembly and functioning of vertebrate striated muscles. By providing connections at the level of individual microfilaments, it contributes to the fine balance of forces between the two halves of the sarcomere. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. The two sheets are linked together by a conserved disulfide bond between B strand and F strand. 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. The Ig I1 domain of the titin I-band is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. Pssm-ID: 409543 [Multi-domain] Cd Length: 94 Bit Score: 157.20 E-value: 1.09e-44
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I-set | pfam07679 | Immunoglobulin I-set domain; |
14-104 | 2.04e-14 | ||||
Immunoglobulin I-set domain; Pssm-ID: 400151 [Multi-domain] Cd Length: 90 Bit Score: 70.36 E-value: 2.04e-14
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IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
20-104 | 8.94e-11 | ||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 60.21 E-value: 8.94e-11
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IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
1802-1874 | 1.40e-06 | ||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 48.27 E-value: 1.40e-06
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I-set | pfam07679 | Immunoglobulin I-set domain; |
1804-1874 | 1.42e-04 | ||||
Immunoglobulin I-set domain; Pssm-ID: 400151 [Multi-domain] Cd Length: 90 Bit Score: 42.63 E-value: 1.42e-04
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Ig2_PTK7 | cd05760 | Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here ... |
1786-1874 | 3.35e-04 | ||||
Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here are composed of the second immunoglobulin (Ig)-like domain in protein tyrosine kinase (PTK) 7, also known as CCK4. PTK7 is a subfamily of the receptor protein tyrosine kinase family, and is referred to as an RPTK-like molecule. RPTKs transduce extracellular signals across the cell membrane and play important roles in regulating cell proliferation, migration, and differentiation. PTK7 is organized as an extracellular portion having seven Ig-like domains, a single transmembrane region, and a cytoplasmic tyrosine kinase-like domain. PTK7 is considered a pseudokinase as it has several unusual residues in some of the highly conserved tyrosine kinase (TK) motifs; it is predicted to lack TK activity. PTK7 may function as a cell-adhesion molecule. PTK7 mRNA is expressed at high levels in placenta, melanocytes, liver, lung, pancreas, and kidney. PTK7 is overexpressed in several cancers, including melanoma and colon cancer lines. Pssm-ID: 409417 Cd Length: 95 Bit Score: 41.84 E-value: 3.35e-04
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Name | Accession | Description | Interval | E-value | |||||
Alpha_kinase_ALPK2 | cd16974 | Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called ... |
1887-2125 | 2.78e-167 | |||||
Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called heart alpha-protein kinase (HAK). Little functional information is known about ALPK2. In a three-dimensional colonic-crypt model, it has been identified as crucial for luminal apoptosis and expression of DNA repair-related genes, possibly in the transition of normal colonic crypt to adenoma. The ALPK2 gene may also be a novel candidate gene for inherited hypertension in Dahl rats. ALPK2 contains a C-terminal alpha-kinase domain and two immunoglobulin (Ig)-like domains. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341224 Cd Length: 239 Bit Score: 511.67 E-value: 2.78e-167
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Alpha_kinase_ALPK2_3 | cd16966 | Alpha-kinase domain of alpha-protein kinases 2 and 3; Alpha-protein kinases 2 (ALPK2) and 3 ... |
1887-2125 | 1.92e-154 | |||||
Alpha-kinase domain of alpha-protein kinases 2 and 3; Alpha-protein kinases 2 (ALPK2) and 3 (ALPK3) are also called heart alpha-protein kinase (HAK) and muscle alpha-protein kinase (MAK), respectively. They both contain a C-terminal alpha-kinase domain and two immunoglobulin (Ig)-like domains. Loss of function mutations in ALPK3 can cause early-onset and familial cardiomyopathy in humans. The ALPK2 gene may also be a novel candidate gene for inherited hypertension in Dahl rats. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341216 Cd Length: 239 Bit Score: 475.91 E-value: 1.92e-154
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Alpha_kinase_ALPK3 | cd16973 | Alpha-kinase domain of alpha-protein kinase 3; Alpha-protein kinase 3 (ALPK3) is also called ... |
1891-2125 | 1.06e-92 | |||||
Alpha-kinase domain of alpha-protein kinase 3; Alpha-protein kinase 3 (ALPK3) is also called muscle alpha-protein kinase (MAK) or myocytic induction/differentiation originator (Midori). Its expression is restricted to fetal and adult heart and adult skeletal muscle, and is localized in the nucleus. It is thought to act as a transcriptional regulator implicated in early cardiac development. Loss of function mutations in ALPK3 can cause early-onset and familial cardiomyopathy in humans. ALPK3 contains a C-terminal alpha-kinase domain and two immunoglobulin (Ig)-like domains. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341223 Cd Length: 239 Bit Score: 300.52 E-value: 1.06e-92
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Alpha_kinase | smart00811 | Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic ... |
1905-2125 | 4.37e-60 | |||||
Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional kinases. The family contains myosin heavy chain kinases and Elongation Factor-2 kinase and a bifunctional ion channel. This family is known as the alpha-kinase family. The structure of the kinase domain revealed unexpected similarity to eukaryotic protein kinases in the catalytic core as well as to metabolic enzymes with ATP-grasp domains. Pssm-ID: 214828 Cd Length: 198 Bit Score: 205.28 E-value: 4.37e-60
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Alpha_kinase | pfam02816 | Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic ... |
1926-2125 | 5.07e-52 | |||||
Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional kinases. The family contains myosin heavy chain kinases and Elongation Factor-2 kinase and a bifunctional ion channel. This family is known as the alpha-kinase family. The structure of the kinase domain revealed unexpected similarity to eukaryotic protein kinases in the catalytic core as well as to metabolic enzymes with ATP-grasp domains. Pssm-ID: 460709 Cd Length: 185 Bit Score: 181.76 E-value: 5.07e-52
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IgI_titin_I1-like | cd20951 | Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of ... |
12-105 | 1.09e-44 | |||||
Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin domain I1 of the titin I-band and similar proteins. Titin is a key component in the assembly and functioning of vertebrate striated muscles. By providing connections at the level of individual microfilaments, it contributes to the fine balance of forces between the two halves of the sarcomere. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. The two sheets are linked together by a conserved disulfide bond between B strand and F strand. 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. The Ig I1 domain of the titin I-band is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. Pssm-ID: 409543 [Multi-domain] Cd Length: 94 Bit Score: 157.20 E-value: 1.09e-44
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Alpha_kinase | cd04515 | Alpha kinase family; The alpha kinase family is a novel family of eukaryotic protein kinase ... |
1925-2125 | 1.09e-31 | |||||
Alpha kinase family; The alpha kinase family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional serine/threonine protein kinases. The family contains myosin heavy chain kinases, elongation factor-2 kinases, and bifunctional ion channel kinases. These kinases are implicated in a large variety of cellular processes such as protein translation, Mg2+/Ca2+ homeostasis, intracellular transport, cell migration, adhesion, and proliferation. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341214 Cd Length: 213 Bit Score: 124.43 E-value: 1.09e-31
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I-set | pfam07679 | Immunoglobulin I-set domain; |
14-104 | 2.04e-14 | |||||
Immunoglobulin I-set domain; Pssm-ID: 400151 [Multi-domain] Cd Length: 90 Bit Score: 70.36 E-value: 2.04e-14
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Alpha_kinase_ChaK1_TRMP7 | cd16971 | Alpha-kinase domain of channel kinase 1, also called transient receptor potential cation ... |
2009-2126 | 5.12e-13 | |||||
Alpha-kinase domain of channel kinase 1, also called transient receptor potential cation channel subfamily M member 7; Channel kinase 1 (ChaK1), also called transient receptor potential cation channel subfamily M member 7 (TRMP7) or long transient receptor potential channel 7 (LTrpC7), is a fusion protein containing a transmembrane ion pore or channel and a C-terminal alpha-kinase domain, both of which are functional. It is ubiquitously expressed and is a cation-selective channel that preferentially permeates Zn2+, Mg2+, and Ca2+ ions. It is a central regulator of Mg2+ and Ca2+ homeostasis. TRPM7 plays a role in cancer proliferation, stroke, hydrogen peroxide dependent neurodegeneration, and heavy metal toxicity. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341221 Cd Length: 239 Bit Score: 70.80 E-value: 5.12e-13
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Alpha_kinase_ChaK | cd16965 | Alpha-kinase domain of channel kinases; This group is composed of channel kinases 1 (ChaK1) ... |
2009-2126 | 1.04e-12 | |||||
Alpha-kinase domain of channel kinases; This group is composed of channel kinases 1 (ChaK1) and 2 (ChaK2), and similar proteins. ChaK1 and ChaK2 are also called transient receptor potential cation channel subfamily M members 7 (TRMP7) and 6 (TRMP6), respectively. They are fusion proteins containing a transmembrane ion pore or channel and a C-terminal alpha-kinase domain, both of which are functional. They are both cation-selective channels that preferentially permeate Zn2+, Mg2+, and Ca2+ ions. They are central regulators of Mg2+ and Ca2+ homeostasis. TRMP7 is ubiquitously expressed while TRMP6 is highly expressed in specific tissues such as the kidney and intestine. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341215 Cd Length: 239 Bit Score: 69.98 E-value: 1.04e-12
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Alpha_kinase_ChaK2_TRPM6 | cd16972 | Alpha-kinase domain of channel kinase 2, also called transient receptor potential cation ... |
2009-2126 | 5.93e-12 | |||||
Alpha-kinase domain of channel kinase 2, also called transient receptor potential cation channel subfamily M member 6; Channel kinase 2 (ChaK2), also called transient receptor potential cation channel subfamily M member 6 (TRMP6) or melastatin-related TRP cation channel 6, is a fusion protein containing a transmembrane ion pore or channel and a C-terminal alpha-kinase domain, both of which are functional. It is highly expressed in the kidney and instestine. It is a cation-selective channel that preferentially permeates Zn2+, Mg2+, and Ca2+ ions. It is a central regulator of Mg2+ and Ca2+ homeostasis. TRPM6 is considered to be the Mg2+ entry pathway in the distal convoluted tubule of the kidney, where it functions as a gatekeeper for controlling the body's Mg2+ balance. Mutations in the TRPM6 gene cause the autosomal recessive disorder hypomagnesemia with secondary hypocalcemia, which often results in severe muscular and neurologic complications from early infancy that can lead to neurologic damage or cardiac arrest if left untreated. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341222 Cd Length: 239 Bit Score: 67.72 E-value: 5.93e-12
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Alpha_kinase_MHCK_like | cd16968 | Alpha-kinase domain of myosin heavy chain kinase and similar domains; This group is composed ... |
1985-2125 | 5.08e-11 | |||||
Alpha-kinase domain of myosin heavy chain kinase and similar domains; This group is composed of alpha-kinase domains of Dictyostelium discoideum myosin heavy chain kinases A-D (MHCKA, MHCKB, MHCKC, MHCKD), alpha-protein kinase 1 (AK1), and similar proteins. The myosin heavy chain kinases are involved in regulating myosin II filament assembly in Dictyostelium discoideum. They phosphorylate target threonine residues located in the carboxyl-terminal portion of the myosin II heavy chain (MHC) tail, resulting in filament disassembly. The different MHCK isoforms display different spatial regulation, indicating specific roles for each isoform in fine tuning the Dictyostelium actomyosin cytoskeleton. They all contain an alpha-kinase domain as well as WD40 repeats at the C-terminus. AK1 contains an N-terminal Arf-GAP domain and a central alpha-kinase domain. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341218 Cd Length: 202 Bit Score: 64.17 E-value: 5.08e-11
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IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
20-104 | 8.94e-11 | |||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 60.21 E-value: 8.94e-11
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Alpha_kinase | cd17508 | Alpha kinase family; uncharacterized subgroup; The alpha kinase family is a novel family of ... |
1901-2125 | 1.14e-10 | |||||
Alpha kinase family; uncharacterized subgroup; The alpha kinase family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional serine/threonine protein kinases. The family contains myosin heavy chain kinases, elongation factor-2 kinases, and bifunctional ion channel kinases. These kinases are implicated in a large variety of cellular processes such as protein translation, Mg2+/Ca2+ homeostasis, intracellular transport, cell migration, adhesion, and proliferation. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341225 Cd Length: 243 Bit Score: 63.94 E-value: 1.14e-10
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Ig_3 | pfam13927 | Immunoglobulin domain; This family contains immunoglobulin-like domains. |
20-91 | 2.65e-09 | |||||
Immunoglobulin domain; This family contains immunoglobulin-like domains. Pssm-ID: 464046 [Multi-domain] Cd Length: 78 Bit Score: 55.65 E-value: 2.65e-09
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Alpha_kinase_VwkA_like | cd16970 | Alpha-kinase domain of Dictyostelium discoideum VwkA and similar domains; Dictyostelium ... |
2026-2125 | 7.32e-09 | |||||
Alpha-kinase domain of Dictyostelium discoideum VwkA and similar domains; Dictyostelium discoideum alpha-protein kinase VwkA is also called von Willebrand factor A alpha-kinase or vWF kinase. It influences myosin II abundance and assembly behavior as vWKA gene disruption leads to significant myosin II overassembly. VwkA also serves a critical conserved role in the periodic contractions of the contractile vacuole through its regulation of the myosin II cortical cytoskeleton. It contains a vWFa domain (named after its homology to von Willebrand factor A, a plasma glycoprotein essential for proper blood clotting) and a C-terminal alpha-kinase domain. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341220 Cd Length: 227 Bit Score: 58.51 E-value: 7.32e-09
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Ig | cd00096 | Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ... |
29-94 | 7.55e-09 | |||||
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: 54.26 E-value: 7.55e-09
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IgI_Myotilin_C | cd05892 | C-terminal immunoglobulin (Ig)-like domain of myotilin; member of the I-set of Ig superfamily ... |
13-104 | 3.63e-08 | |||||
C-terminal immunoglobulin (Ig)-like domain of myotilin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the C-terminal immunoglobulin (Ig)-like domain of myotilin. Mytolin belongs to the palladin-myotilin-myopalladin family. Proteins belonging to the latter family contain multiple Ig-like domains and function as scaffolds, modulating the actin cytoskeleton. Myotilin is most abundant in skeletal and cardiac muscle and is involved in maintaining sarcomere integrity. It binds to alpha-actinin, filamin, and actin. Mutations in myotilin lead to muscle disorders. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409473 Cd Length: 92 Bit Score: 52.85 E-value: 3.63e-08
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IgI_Myotilin_C_like | cd05744 | Immunoglobulin (Ig)-like domain of myotilin, palladin, and myopalladin; member of the I-set of ... |
14-104 | 6.51e-08 | |||||
Immunoglobulin (Ig)-like domain of myotilin, palladin, and myopalladin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig)-like domain in myotilin, palladin, and myopalladin. Myotilin, palladin, and myopalladin function as scaffolds that regulate actin organization. Myotilin and myopalladin are most abundant in skeletal and cardiac muscle; palladin is ubiquitously expressed in the organs of developing vertebrates and plays a key role in cellular morphogenesis. The three family members each interact with specific molecular partners with all three binding to alpha-actinin; In addition, palladin also binds to vasodilator-stimulated phosphoprotein (VASP) and ezrin, myotilin binds to filamin and actin, and myopalladin also binds to nebulin and cardiac ankyrin repeat protein (CARP). This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409405 [Multi-domain] Cd Length: 91 Bit Score: 52.11 E-value: 6.51e-08
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IgI_4_hemolin-like | cd20978 | Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ... |
14-104 | 9.74e-08 | |||||
Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain of hemolin and similar proteins. Hemolin, an insect immunoglobulin superfamily (IgSF) member containing four Ig-like domains, is a lipopolysaccharide-binding immune protein induced during bacterial infection. Hemolin shares significant sequence similarity with the first four Ig-like domains of the transmembrane cell adhesion molecules (CAMs) of the L1 family. 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. The fourth Ig-like domain of hemolin is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. Pssm-ID: 409570 [Multi-domain] Cd Length: 88 Bit Score: 51.62 E-value: 9.74e-08
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IgI_4_MYLK-like | cd20976 | Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a ... |
14-104 | 1.53e-07 | |||||
Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain from smooth muscle myosin light chain kinase (MYLK) and similar domains. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. 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. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of this group shows that the fourth Ig-like domain from myosin light chain kinase lacks this strand and thus belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. Pssm-ID: 409568 [Multi-domain] Cd Length: 90 Bit Score: 51.10 E-value: 1.53e-07
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IgI_telokin-like | cd20973 | immunoglobulin-like domain of telokin and similar proteins; a member of the I-set of IgSF ... |
17-104 | 1.67e-07 | |||||
immunoglobulin-like domain of telokin and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin (Ig) domain in telokin, the C-terminal domain of myosin light chain kinase which is identical to telokin, and similar proteins. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. 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. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the telokin Ig domain lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. Pssm-ID: 409565 [Multi-domain] Cd Length: 88 Bit Score: 51.04 E-value: 1.67e-07
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Ig_Titin_like | cd05748 | Immunoglobulin (Ig)-like domain of titin and similar proteins; The members here are composed ... |
35-94 | 2.28e-07 | |||||
Immunoglobulin (Ig)-like domain of titin and similar proteins; The members here are composed of the immunoglobulin (Ig)-like domain found in titin-like proteins and similar proteins. Titin (also called connectin) is a fibrous sarcomeric protein specifically found in vertebrate striated muscle. Titin is a giant protein; depending on isoform composition, it ranges from 2970 to 3700 kDa, and is of a length that spans half a sarcomere. Titin largely consists of multiple repeats of Ig-like and fibronectin type 3 (FN-III)-like domains. Titin connects the ends of myosin thick filaments to Z disks and extends along the thick filament to the H zone. It appears to function similarly to an elastic band, keeping the myosin filaments centered in the sarcomere during muscle contraction or stretching. Within the sarcomere, titin is also attached to or is associated with myosin binding protein C (MyBP-C). MyBP-C appears to contribute to the generation of passive tension by titin and like titin has repeated Ig-like and FN-III domains. Also included in this group are worm twitchin and insect projectin, thick filament proteins of invertebrate muscle which also have repeated Ig-like and FN-III domains. Pssm-ID: 409406 [Multi-domain] Cd Length: 82 Bit Score: 50.28 E-value: 2.28e-07
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IgC2_3_Dscam | cd20957 | Third immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ... |
21-104 | 2.56e-07 | |||||
Third immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the Constant 2 (C2)-set of IgSF domains; The members here are composed of the third immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. 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. This group belongs to the C2-set of IgSF domains, having A, B, and E strands in one beta-sheet and A', G, F, C, and C' in the other. Unlike other Ig domain sets, the C2-set lacks the D strand. Pssm-ID: 409549 [Multi-domain] Cd Length: 88 Bit Score: 50.22 E-value: 2.56e-07
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Alpha_kinase_eEF2K | cd16967 | Alpha-kinase domain of eukaryotic elongation factor-2 kinase; Eukaryotic elongation factor-2 ... |
1925-2125 | 1.19e-06 | |||||
Alpha-kinase domain of eukaryotic elongation factor-2 kinase; Eukaryotic elongation factor-2 kinase (eEF2K) is also called calcium/calmodulin (CaM)-dependent eEF2K. It phosphorylates eukaryotic elongation factor-2 (EEF2) at a single site, leading to its inactivation and inability to bind ribosomes, and slowing down the elongation stage of protein synthesis. It has been linked to many human diseases including cardiovascular conditions (atherosclerosis) and pulmonary arterial hypertension, as well as solid tumors and neurological disorders. eEF2K is an atypical protein kinase containing a CaM binding region, an alpha-kinase catalytic domain, and TPR-like Sel1 repeats at the C-terminus. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341217 Cd Length: 216 Bit Score: 51.56 E-value: 1.19e-06
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IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
1802-1874 | 1.40e-06 | |||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 48.27 E-value: 1.40e-06
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IgI_2_Titin_Z1z2-like | cd20972 | Second Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk, and ... |
11-104 | 2.45e-06 | |||||
Second Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk and similar proteins. Titin is a key component in the assembly and functioning of vertebrate striated muscles. By providing connections at the level of individual microfilaments, it contributes to the fine balance of forces between the two halves of the sarcomere. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. 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. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the titin Z1z2 lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. Pssm-ID: 409564 [Multi-domain] Cd Length: 91 Bit Score: 47.58 E-value: 2.45e-06
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Ig4_L1-NrCAM_like | cd04978 | Fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), ... |
27-104 | 5.02e-06 | |||||
Fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), and NrCAM (Ng-CAM-related); The members here are composed of the fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), and NrCAM (Ng-CAM-related). These proteins belong to the L1 subfamily of cell adhesion molecules (CAMs) and are comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region and an intracellular domain. These molecules are primarily expressed in the nervous system. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, or spastic paraplegia type 1, that involves abnormalities of axonal growth. Pssm-ID: 409367 [Multi-domain] Cd Length: 89 Bit Score: 46.67 E-value: 5.02e-06
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IgI_4_Neogenin_like | cd05723 | Fourth immunoglobulin (Ig)-like domain in neogenin, and similar domains; member of the I-set ... |
25-100 | 1.49e-05 | |||||
Fourth immunoglobulin (Ig)-like domain in neogenin, and similar domains; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain in neogenin and related proteins. Neogenin is a cell surface protein which is expressed in the developing nervous system of vertebrate embryos in the growing nerve cells. It is also expressed in other embryonic tissues, and may play a general role in developmental processes such as cell migration, cell-cell recognition, and tissue growth regulation. Included in this group is the tumor suppressor protein DCC which is deleted in colorectal carcinoma. DCC and neogenin each have four Ig-like domains followed by six fibronectin type III domains, a transmembrane domain, and an intracellular domain. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409388 Cd Length: 84 Bit Score: 45.27 E-value: 1.49e-05
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Ig4_L1-CAM_like | cd05867 | Fourth immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM); The members ... |
29-104 | 1.72e-05 | |||||
Fourth immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM); The members here are composed of the fourth immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region, and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, and spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains the chicken neuron-glia cell adhesion molecule, Ng-CAM. Pssm-ID: 409453 [Multi-domain] Cd Length: 89 Bit Score: 45.27 E-value: 1.72e-05
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IgI_2_MuSK | cd20968 | agrin-responsive second immunoglobulin-like domains (Ig2) of the Muscle-specific kinase (MuSK) ... |
9-105 | 1.93e-05 | |||||
agrin-responsive second immunoglobulin-like domains (Ig2) of the Muscle-specific kinase (MuSK) ectodomain; a member of the I-set of Ig superfamily domains; The members here are composed of the second immunoglobulin-like (Ig) domains of the Muscle-specific kinase (MuSK) ectodomain. MuSK is a receptor tyrosine kinase specifically expressed in skeletal muscle, where it plays a central role in the formation and maintenance of the neuromuscular junction (NMJ). MuSK is activated by agrin, a neuron-derived heparan sulfate proteoglycan. The activation of MUSK in myotubes regulates the formation of NMJs through the regulation of different processes including the specific expression of genes in subsynaptic nuclei, the reorganization of the actin cytoskeleton and the clustering of the acetylcholine receptors (AChR) in the postsynaptic membrane. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. 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. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the MuSK lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. Pssm-ID: 409560 [Multi-domain] Cd Length: 88 Bit Score: 44.93 E-value: 1.93e-05
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Ig3_L1-CAM_like | cd05731 | Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM), and similar ... |
28-105 | 2.64e-05 | |||||
Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM), and similar domains; The members here are composed of the third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, and spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains the chicken neuron-glia cell adhesion molecule, Ng-CAM and human neurofascin. Pssm-ID: 409394 [Multi-domain] Cd Length: 83 Bit Score: 44.32 E-value: 2.64e-05
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IgI_5_Robo | cd20952 | Fifth Ig-like domain of Roundabout (Robo) homolog 1/2, and similar domains; a member of the ... |
14-104 | 6.78e-05 | |||||
Fifth Ig-like domain of Roundabout (Robo) homolog 1/2, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fifth Ig-like domain of Roundabout (Robo) homolog 1/2 and similar domains. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, -2, and -3), and three mammalian Slit homologs (Slit-1,-2, -3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, -2, and -3 are expressed by commissural neurons in the vertebrate spinal cord and Slits 1, -2, -3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of slit responsiveness, antagonizes slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be is the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. The fifth Ig-like domain of Robo 1 and 2 is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors Pssm-ID: 409544 [Multi-domain] Cd Length: 87 Bit Score: 43.25 E-value: 6.78e-05
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IgI_2_FGFR | cd05857 | Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor; member of ... |
23-96 | 7.77e-05 | |||||
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor; member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor. FGF receptors bind FGF signaling polypeptides. FGFs participate in multiple processes such as morphogenesis, development, and angiogenesis. FGFs bind to four FGF receptor tyrosine kinases (FGFR1, FGFR2, FGFR3, FGFR4). Receptor diversity is controlled by alternative splicing producing splice variants with different ligand binding characteristics and different expression patterns. FGFRs have an extracellular region comprised of three IG-like domains, a single transmembrane helix, and an intracellular tyrosine kinase domain. Ligand binding and specificity reside in the Ig-like domains 2 and 3, and the linker region that connects these two. FGFR activation and signaling depend on FGF-induced dimerization, a process involving cell surface heparin or heparin sulfate proteoglycans. Pssm-ID: 409443 [Multi-domain] Cd Length: 95 Bit Score: 43.30 E-value: 7.77e-05
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Ig4_Contactin-2-like | cd05728 | Fourth Ig domain of the neural cell adhesion molecule contactin-2, and similar domains; The ... |
33-104 | 8.61e-05 | |||||
Fourth Ig domain of the neural cell adhesion molecule contactin-2, and similar domains; The members here are composed of the fourth Ig domain of the neural cell adhesion molecule contactin-2. Contactins are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. Contactin-2 (also called TAG-1, axonin-1) facilitates cell adhesion by homophilic binding between molecules in apposed membranes. The first four Ig domains form the intermolecular binding fragment which arranges as a compact U-shaped module by contacts between Ig domains 1 and 4, and domains 2 and 3. It has been proposed that a linear zipper-like array forms, from contactin-2 molecules alternatively provided by the two apposed membranes. Pssm-ID: 143205 [Multi-domain] Cd Length: 85 Bit Score: 42.97 E-value: 8.61e-05
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Ig_2 | pfam13895 | Immunoglobulin domain; This domain contains immunoglobulin-like domains. |
23-104 | 1.03e-04 | |||||
Immunoglobulin domain; This domain contains immunoglobulin-like domains. Pssm-ID: 464026 [Multi-domain] Cd Length: 79 Bit Score: 42.77 E-value: 1.03e-04
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Ig4_NrCAM | cd05868 | Fourth immunoglobulin (Ig)-like domain of NrCAM (NgCAM-related cell adhesion molecule); The ... |
28-104 | 1.13e-04 | |||||
Fourth immunoglobulin (Ig)-like domain of NrCAM (NgCAM-related cell adhesion molecule); The members here are composed of the fourth immunoglobulin (Ig)-like domain of NrCAM (NgCAM-related cell adhesion molecule). NrCAM belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six IG-like domains and five fibronectin type III domains, a transmembrane region, and an intracellular domain. NrCAM is primarily expressed in the nervous system. Pssm-ID: 409454 Cd Length: 89 Bit Score: 43.05 E-value: 1.13e-04
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I-set | pfam07679 | Immunoglobulin I-set domain; |
1804-1874 | 1.42e-04 | |||||
Immunoglobulin I-set domain; Pssm-ID: 400151 [Multi-domain] Cd Length: 90 Bit Score: 42.63 E-value: 1.42e-04
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IgI_3_Robo | cd05725 | Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ... |
29-104 | 2.37e-04 | |||||
Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, Robo3), and three mammalian Slit homologs (Slit-1,Slit-2, Slit-3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit-1, Slit-2, and Slit-3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409390 [Multi-domain] Cd Length: 83 Bit Score: 41.61 E-value: 2.37e-04
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IgI_APEG-1_like | cd20975 | Immunoglobulin-like domain of human Aortic Preferentially Expressed Protein-1 (APEG-1) and ... |
14-104 | 3.20e-04 | |||||
Immunoglobulin-like domain of human Aortic Preferentially Expressed Protein-1 (APEG-1) and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin I-set (IgI) domain of the Human Aortic Preferentially Expressed Protein-1 (APEG-1) and similar proteins. APEG-1 is a novel specific smooth muscle differentiation marker predicted to play a role in the growth and differentiation of arterial smooth muscle cells (SMCs). The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. 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. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the human APEG-1 lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. Pssm-ID: 409567 Cd Length: 91 Bit Score: 41.69 E-value: 3.20e-04
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IgI_M-protein_C | cd05891 | C-terminal immunoglobulin (Ig)-like domain of M-protein; member of the I-set of Ig superfamily ... |
25-94 | 3.28e-04 | |||||
C-terminal immunoglobulin (Ig)-like domain of M-protein; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the C-terminal immunoglobulin (Ig)-like domain of M-protein (also known as myomesin-2). M-protein is a structural protein localized to the M-band, a transverse structure in the center of the sarcomere, and is a candidate for M-band bridges. M-protein is modular consisting mainly of repetitive IG-like and fibronectin type III (FnIII) domains and has a muscle-type specific expression pattern. M-protein is present in fast fibers. Pssm-ID: 143299 Cd Length: 92 Bit Score: 41.82 E-value: 3.28e-04
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Ig2_PTK7 | cd05760 | Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here ... |
1786-1874 | 3.35e-04 | |||||
Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here are composed of the second immunoglobulin (Ig)-like domain in protein tyrosine kinase (PTK) 7, also known as CCK4. PTK7 is a subfamily of the receptor protein tyrosine kinase family, and is referred to as an RPTK-like molecule. RPTKs transduce extracellular signals across the cell membrane and play important roles in regulating cell proliferation, migration, and differentiation. PTK7 is organized as an extracellular portion having seven Ig-like domains, a single transmembrane region, and a cytoplasmic tyrosine kinase-like domain. PTK7 is considered a pseudokinase as it has several unusual residues in some of the highly conserved tyrosine kinase (TK) motifs; it is predicted to lack TK activity. PTK7 may function as a cell-adhesion molecule. PTK7 mRNA is expressed at high levels in placenta, melanocytes, liver, lung, pancreas, and kidney. PTK7 is overexpressed in several cancers, including melanoma and colon cancer lines. Pssm-ID: 409417 Cd Length: 95 Bit Score: 41.84 E-value: 3.35e-04
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IgI_Twitchin_like | cd20949 | C-terminal immunoglobulin-like domain of the myosin-associated giant protein kinase Twitchin, ... |
23-95 | 6.33e-04 | |||||
C-terminal immunoglobulin-like domain of the myosin-associated giant protein kinase Twitchin, and similar domains; member of the I-set IgSF domains; The members here are composed of the C-terminal immunoglobulin-like domain of the myosin-associated giant protein kinase Twitchin and similar proteins, including Caenorhabditis elegans and Aplysia californica Twitchin, Drosophila melanogaster Projectin, and similar proteins. These are very large muscle proteins containing multiple immunoglobulin (Ig)-like and fibronectin type III (FN3) domains and a single kinase domain near the C-terminus. In humans these proteins are called Titin. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. 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. The Ig-like domain of the Twitchin is a member of the I-set IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins (titin, telokin, and twitchin), the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D. Pssm-ID: 409541 [Multi-domain] Cd Length: 89 Bit Score: 40.78 E-value: 6.33e-04
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IgI_1_Titin_Z1z2-like | cd20974 | First Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk and ... |
14-104 | 6.67e-04 | |||||
First Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the first immunoglobulin (Ig)-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk and similar proteins. Titin is a key component in the assembly and functioning of vertebrate striated muscles. By providing connections at the level of individual microfilaments, it contributes to the fine balance of forces between the two halves of the sarcomere. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. 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. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the titin Z1z2 lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. Pssm-ID: 409566 [Multi-domain] Cd Length: 93 Bit Score: 40.80 E-value: 6.67e-04
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IgC_1_Robo | cd07693 | First immunoglobulin (Ig)-like constant domain in Robo (roundabout) receptors, and similar ... |
23-104 | 7.06e-04 | |||||
First immunoglobulin (Ig)-like constant domain in Robo (roundabout) receptors, and similar domains; The members here are composed of the first immunoglobulin (Ig)-like domain in Roundabout (Robo) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, and Robo3), and three mammalian Slit homologs (Slit1, Slit2, Slit3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit1, Slit2,and Slit3 are expressed at the ventral midline. Robo3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be is the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. Pssm-ID: 409490 [Multi-domain] Cd Length: 99 Bit Score: 41.00 E-value: 7.06e-04
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Ig2_PTK7 | cd05760 | Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here ... |
26-99 | 9.88e-04 | |||||
Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here are composed of the second immunoglobulin (Ig)-like domain in protein tyrosine kinase (PTK) 7, also known as CCK4. PTK7 is a subfamily of the receptor protein tyrosine kinase family, and is referred to as an RPTK-like molecule. RPTKs transduce extracellular signals across the cell membrane and play important roles in regulating cell proliferation, migration, and differentiation. PTK7 is organized as an extracellular portion having seven Ig-like domains, a single transmembrane region, and a cytoplasmic tyrosine kinase-like domain. PTK7 is considered a pseudokinase as it has several unusual residues in some of the highly conserved tyrosine kinase (TK) motifs; it is predicted to lack TK activity. PTK7 may function as a cell-adhesion molecule. PTK7 mRNA is expressed at high levels in placenta, melanocytes, liver, lung, pancreas, and kidney. PTK7 is overexpressed in several cancers, including melanoma and colon cancer lines. Pssm-ID: 409417 Cd Length: 95 Bit Score: 40.30 E-value: 9.88e-04
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IgI_2_FGFRL1-like | cd05856 | Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1 ... |
24-104 | 1.37e-03 | |||||
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1(FGFRL1); member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor like-1(FGFRL1). FGFRL1 is comprised of a signal peptide, three extracellular Ig-like modules, a transmembrane segment, and a short intracellular domain. FGFRL1 is expressed preferentially in skeletal tissues. Similar to FGF receptors, the expressed protein interacts specifically with heparin and with FGF2. FGFRL1 does not have a protein tyrosine kinase domain at its C-terminus; neither does its cytoplasmic domain appear to interact with a signaling partner. It has been suggested that FGFRL1 may not have any direct signaling function, but instead acts as a decoy receptor trapping FGFs and preventing them from binding other receptors. Pssm-ID: 409442 Cd Length: 92 Bit Score: 39.84 E-value: 1.37e-03
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IgI_Myomesin_like_C | cd05737 | C-terminal immunoglobulin (Ig)-like domain of myomesin and M-protein; member of the I-set of ... |
31-94 | 1.49e-03 | |||||
C-terminal immunoglobulin (Ig)-like domain of myomesin and M-protein; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the C-terminal immunoglobulin (Ig)-like domain of myomesin and M-protein (also known as myomesin-2). Myomesin and M-protein are both structural proteins localized to the M-band, a transverse structure in the center of the sarcomere, and are candidates for M-band bridges. Both proteins are modular, consisting mainly of repetitive Ig-like and fibronectin type III (FnIII) domains. Myomesin is expressed in all types of vertebrate striated muscle; M-protein has a muscle-type specific expression pattern. Myomesin is present in both slow and fast fibers; M-protein is present only in fast fibers. It has been suggested that myomesin acts as a molecular spring with alternative splicing as a means of modifying its elasticity. Pssm-ID: 319300 Cd Length: 92 Bit Score: 39.88 E-value: 1.49e-03
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IgI_1_Palladin_C | cd05893 | First C-terminal immunoglobulin (Ig)-like domain of palladin; member of the I-set of Ig ... |
14-104 | 1.74e-03 | |||||
First C-terminal immunoglobulin (Ig)-like domain of palladin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the C-terminal immunoglobulin (Ig)-like domain of palladin. Palladin belongs to the palladin-myotilin-myopalladin family. Proteins belonging to this family contain multiple Ig-like domains and function as scaffolds, modulating actin cytoskeleton. Palladin binds to alpha-actinin ezrin, vasodilator-stimulated phosphoprotein VASP, SPIN90 (also known as DIP or mDia interacting protein), and Src. Palladin also binds F-actin directly, via its Ig3 domain. Palladin is expressed as several alternatively spliced isoforms, having various combinations of Ig-like domains, in a cell-type-specific manner. It has been suggested that palladin's different Ig-like domains may be specialized for distinct functions. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409474 Cd Length: 92 Bit Score: 39.70 E-value: 1.74e-03
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IgI_2_Robo | cd05724 | Second immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ... |
29-94 | 2.29e-03 | |||||
Second immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin (Ig)-like domain in Robo (roundabout) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of the Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, and Robo3), and three mammalian Slit homologs (Slit-1,Slit-2, Slit-3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit-1, Slit-2, Slit-3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit-2 has been shown by surface plasmon resonance experiments and mutational analysis to be the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409389 [Multi-domain] Cd Length: 87 Bit Score: 38.92 E-value: 2.29e-03
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IgI_Titin_like | cd05747 | Immunoglobulin (Ig)-like domain of human titin C terminus and similar proteins; member of the ... |
11-94 | 3.01e-03 | |||||
Immunoglobulin (Ig)-like domain of human titin C terminus and similar proteins; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the fifth immunoglobulin (Ig)-like domain from the C-terminus of human titin x and similar proteins. Titin (also called connectin) is a fibrous sarcomeric protein specifically found in vertebrate striated muscle. Titin is gigantic; depending on isoform composition it ranges from 2970 to 3700 kDa, and is of a length that spans half a sarcomere. Titin largely consists of multiple repeats of Ig-like and fibronectin type 3 (FN-III)-like domains. Titin connects the ends of myosin thick filaments to Z disks and extends along the thick filament to the H zone and appears to function similar to an elastic band, keeping the myosin filaments centered in the sarcomere during muscle contraction or stretching. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 143224 [Multi-domain] Cd Length: 92 Bit Score: 38.88 E-value: 3.01e-03
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IgI_2_FGFR_like | cd05729 | Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor, and similar ... |
23-104 | 3.52e-03 | |||||
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor, and similar domains; member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor. FGF receptors bind FGF signaling polypeptides. FGFs participate in multiple processes such as morphogenesis, development, and angiogenesis. FGFs bind to four FGF receptor tyrosine kinases (FGFR1, FGFR2, FGFR3, FGFR4). Receptor diversity is controlled by alternative splicing producing splice variants with different ligand binding characteristics and different expression patterns. FGFRs have an extracellular region comprised of three Ig-like domains, a single transmembrane helix, and an intracellular tyrosine kinase domain. Ligand binding and specificity reside in the Ig-like domains 2 and 3, and the linker region that connects these two. FGFR activation and signaling depend on FGF-induced dimerization, a process involving cell surface heparin or heparin sulfate proteoglycans. This group also contains fibroblast growth factor (FGF) receptor like-1(FGFRL1). FGFRL1 does not have a protein tyrosine kinase domain at its C-terminus; neither does its cytoplasmic domain appear to interact with a signaling partner. It has been suggested that FGFRL1 may not have any direct signaling function, but instead acts as a decoy receptor trapping FGFs and preventing them from binding other receptors. Pssm-ID: 409393 [Multi-domain] Cd Length: 95 Bit Score: 38.74 E-value: 3.52e-03
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IgI_4_Dscam | cd20956 | Fourth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ... |
10-104 | 4.75e-03 | |||||
Fourth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. This group is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. Pssm-ID: 409548 [Multi-domain] Cd Length: 96 Bit Score: 38.31 E-value: 4.75e-03
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IgI_2_Follistatin_like | cd05736 | Second immunoglobulin (Ig)-like domain of a Follistatin-related protein 5, and similar domains; ... |
20-95 | 5.01e-03 | |||||
Second immunoglobulin (Ig)-like domain of a Follistatin-related protein 5, and similar domains; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin (Ig)-like domain found in human Follistatin-related protein 5 (FSTL5) and a follistatin-like molecule encoded by the CNS-related Mahya gene. Mahya genes have been retained in certain Bilaterian branches during evolution. They are conserved in Hymenoptera and Deuterostomes, but are absent from other metazoan species such as fruit fly and nematode. Mahya proteins are secretory, with a follistatin-like domain (Kazal-type serine/threonine protease inhibitor domain and EF-hand calcium-binding domain), two Ig-like domains, and a novel C-terminal domain. Mahya may be involved in learning and memory and in processing of sensory information in Hymenoptera and vertebrates. Follistatin is a secreted, multidomain protein that binds activins with high affinity and antagonizes their signaling. Pssm-ID: 409399 [Multi-domain] Cd Length: 93 Bit Score: 38.40 E-value: 5.01e-03
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Alpha_kinase | cd17509 | Alpha kinase family; uncharacterized subgroup; The alpha kinase family is a novel family of ... |
2064-2125 | 5.13e-03 | |||||
Alpha kinase family; uncharacterized subgroup; The alpha kinase family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional serine/threonine protein kinases. The family contains myosin heavy chain kinases, elongation factor-2 kinases, and bifunctional ion channel kinases. These kinases are implicated in a large variety of cellular processes such as protein translation, Mg2+/Ca2+ homeostasis, intracellular transport, cell migration, adhesion, and proliferation. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341226 Cd Length: 221 Bit Score: 40.79 E-value: 5.13e-03
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ig | pfam00047 | Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of ... |
23-95 | 5.57e-03 | |||||
Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-protein and protein-ligand interactions. Pssm-ID: 395002 Cd Length: 86 Bit Score: 37.94 E-value: 5.57e-03
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Ig | cd00096 | Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ... |
1804-1869 | 6.15e-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: 37.31 E-value: 6.15e-03
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IgI_VEGFR-2 | cd05864 | Immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor 2 (VEGFR-2); ... |
15-91 | 6.60e-03 | |||||
Immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor 2 (VEGFR-2); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor 2 (VEGFR-2). The VEGFRs have an extracellular component with seven Ig-like domains, a transmembrane segment, and an intracellular tyrosine kinase domain interrupted by a kinase-insert domain. VEGFRs bind VEGFs with high affinity at the Ig-like domains. VEGFR-2 (KDR/Flk-1) is a major mediator of the mitogenic, angiogenic and microvascular permeability-enhancing effects of VEGF-A; VEGF-A is important to the growth and maintenance of vascular endothelial cells and to the development of new blood- and lymphatic-vessels in physiological and pathological states. VEGF-A also interacts with VEGFR-1, which it binds more strongly than VEGFR-2. VEGFR-1 and VEGFR-2 may mediate a chemotactic and a survival signal in hematopoietic stem cells or leukemia cells. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409450 Cd Length: 89 Bit Score: 37.99 E-value: 6.60e-03
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