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Conserved domains on  [gi|388453725|ref|NP_001252542|]
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myosin-binding protein H-like isoform 2 [Homo sapiens]

Protein Classification

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
Ig super family cl11960
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
 62-120 1.35e-16

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 cd05748:

Pssm-ID: 472250 [Multi-domain]  Cd Length: 82  Bit Score: 73.39  E-value: 1.35e-16
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725  62 TYIRKVGDTVNLLIPFQGKPKPQAIWTHDGCALDTR-RVSVRNGEQDSILFIREAQRADS 120
Cdd:cd05748    1 TIVVRAGESLRLDIPIKGRPTPTVTWSKDGQPLKETgRVQIETTASSTSLVIKNAKRSDS 60
FN3 cd00063
Fibronectin type 3 domain; One of three types of internal repeats found in the plasma protein ...
 123-212 2.94e-15

Fibronectin type 3 domain; One of three types of internal repeats found in the plasma protein fibronectin. Its tenth fibronectin type III repeat contains an RGD cell recognition sequence in a flexible loop between 2 strands. Approximately 2% of all animal proteins contain the FN3 repeat; including extracellular and intracellular proteins, membrane spanning cytokine receptors, growth hormone receptors, tyrosine phosphatase receptors, and adhesion molecules. FN3-like domains are also found in bacterial glycosyl hydrolases.


:

Pssm-ID: 238020 [Multi-domain]  Cd Length: 93  Bit Score: 70.22  E-value: 2.94e-15
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 123 PGPPQSIKLVDVWGFSATLEWTPPQDTGnTALLGYTVQKADTKSGLWFTVLEHYH-RTSCIVSDLIIGNSYAFRVFAENQ 201
Cdd:cd00063    1 PSPPTNLRVTDVTSTSVTLSWTPPEDDG-GPITGYVVEYREKGSGDWKEVEVTPGsETSYTLTGLKPGTEYEFRVRAVNG 79

                         90
                 ....*....|.
gi 388453725 202 CGLSETAPITT 212
Cdd:cd00063   80 GGESPPSESVT 90
Ig super family cl11960
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
 238-327 5.64e-15

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 pfam07679:

Pssm-ID: 472250 [Multi-domain]  Cd Length: 90  Bit Score: 69.21  E-value: 5.64e-15
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725  238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLG 317
Cdd:pfam07679   1 PKFTQKPKDVEVQEGESARFTCTVTGTPDPEVSWFKDGQPLRSSDRFKVTYEGGTYTLTISNVQPDDSGKYTCVATNSAG 80

                          90
                  ....*....|
gi 388453725  318 EASVDCRVDV 327
Cdd:pfam07679  81 EAEASAELTV 90
 
Name Accession Description Interval E-value
Ig_Titin_like cd05748
Immunoglobulin (Ig)-like domain of titin and similar proteins; The members here are composed ...
 62-120 1.35e-16

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: 73.39  E-value: 1.35e-16
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725  62 TYIRKVGDTVNLLIPFQGKPKPQAIWTHDGCALDTR-RVSVRNGEQDSILFIREAQRADS 120
Cdd:cd05748    1 TIVVRAGESLRLDIPIKGRPTPTVTWSKDGQPLKETgRVQIETTASSTSLVIKNAKRSDS 60
FN3 cd00063
Fibronectin type 3 domain; One of three types of internal repeats found in the plasma protein ...
 123-212 2.94e-15

Fibronectin type 3 domain; One of three types of internal repeats found in the plasma protein fibronectin. Its tenth fibronectin type III repeat contains an RGD cell recognition sequence in a flexible loop between 2 strands. Approximately 2% of all animal proteins contain the FN3 repeat; including extracellular and intracellular proteins, membrane spanning cytokine receptors, growth hormone receptors, tyrosine phosphatase receptors, and adhesion molecules. FN3-like domains are also found in bacterial glycosyl hydrolases.


Pssm-ID: 238020 [Multi-domain]  Cd Length: 93  Bit Score: 70.22  E-value: 2.94e-15
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 123 PGPPQSIKLVDVWGFSATLEWTPPQDTGnTALLGYTVQKADTKSGLWFTVLEHYH-RTSCIVSDLIIGNSYAFRVFAENQ 201
Cdd:cd00063    1 PSPPTNLRVTDVTSTSVTLSWTPPEDDG-GPITGYVVEYREKGSGDWKEVEVTPGsETSYTLTGLKPGTEYEFRVRAVNG 79

                         90
                 ....*....|.
gi 388453725 202 CGLSETAPITT 212
Cdd:cd00063   80 GGESPPSESVT 90
I-set pfam07679
Immunoglobulin I-set domain;
238-327 5.64e-15

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 69.21  E-value: 5.64e-15
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725  238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLG 317
Cdd:pfam07679   1 PKFTQKPKDVEVQEGESARFTCTVTGTPDPEVSWFKDGQPLRSSDRFKVTYEGGTYTLTISNVQPDDSGKYTCVATNSAG 80

                          90
                  ....*....|
gi 388453725  318 EASVDCRVDV 327
Cdd:pfam07679  81 EAEASAELTV 90
FN3 smart00060
Fibronectin type 3 domain; One of three types of internal repeat within the plasma protein, ...
 123-205 1.37e-14

Fibronectin type 3 domain; One of three types of internal repeat within the plasma protein, fibronectin. The tenth fibronectin type III repeat contains a RGD cell recognition sequence in a flexible loop between 2 strands. Type III modules are present in both extracellular and intracellular proteins.


Pssm-ID: 214495 [Multi-domain]  Cd Length: 83  Bit Score: 68.02  E-value: 1.37e-14
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725   123 PGPPQSIKLVDVWGFSATLEWTPPQDTGNTA-LLGYTVQKaDTKSGLWFTVLEHYHRTSCIVSDLIIGNSYAFRVFAENQ 201
Cdd:smart00060   1 PSPPSNLRVTDVTSTSVTLSWEPPPDDGITGyIVGYRVEY-REEGSEWKEVNVTPSSTSYTLTGLKPGTEYEFRVRAVNG 79


                   ....
gi 388453725   202 CGLS 205
Cdd:smart00060  80 AGEG 83
IgI_telokin-like cd20973
immunoglobulin-like domain of telokin and similar proteins; a member of the I-set of IgSF ...
 241-327 6.65e-14

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: 66.44  E-value: 6.65e-14
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 241 TQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRAL-THLGICSLEIRKPGPFDGGIYTCKAVNPLGEA 319
Cdd:cd20973    1 IQTLRDKEVVEGSAARFDCKVEGYPDPEVKWMKDDNPIVESRRFQIDqDEDGLCSLIISDVCGDDSGKYTCKAVNSLGEA 80


                 ....*...
gi 388453725 320 SVDCRVDV 327
Cdd:cd20973   81 TCSAELTV 88
fn3 pfam00041
Fibronectin type III domain;
124-206 2.61e-11

Fibronectin type III domain;


Pssm-ID: 394996 [Multi-domain]  Cd Length: 85  Bit Score: 58.97  E-value: 2.61e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725  124 GPPQSIKLVDVWGFSATLEWTPPqDTGNTALLGYTVQKADTKSG-LWFTVLEHYHRTSCIVSDLIIGNSYAFRVFAENQC 202
Cdd:pfam00041   1 SAPSNLTVTDVTSTSLTVSWTPP-PDGNGPITGYEVEYRPKNSGePWNEITVPGTTTSVTLTGLKPGTEYEVRVQAVNGG 79


                  ....
gi 388453725  203 GLSE 206
Cdd:pfam00041  80 GEGP 83
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
 248-327 2.80e-07

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: 47.50  E-value: 2.80e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725   248 TTVTGYNTQLFCCVRASPRPKIIWLKNKMD-IQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLGEASVDCRVD 326
Cdd:smart00410   5 TVKEGESVTLSCEASGSPPPEVTWYKQGGKlLAESGRFSVSRSGSTSTLTISNVTPEDSGTYTCAATNSSGSASSGTTLT 84


                   .
gi 388453725   327 V 327
Cdd:smart00410  85 V 85
I-set pfam07679
Immunoglobulin I-set domain;
66-120 6.41e-07

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 46.87  E-value: 6.41e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 388453725   66 KVGDTVNLLIPFQGKPKPQAIWTHDGCAL-DTRRVSVRNGEQDSILFIREAQRADS 120
Cdd:pfam07679  13 QEGESARFTCTVTGTPDPEVSWFKDGQPLrSSDRFKVTYEGGTYTLTISNVQPDDS 68
FN3 COG3401
Fibronectin type 3 domain [General function prediction only];
98-215 2.10e-06

Fibronectin type 3 domain [General function prediction only];


Pssm-ID: 442628 [Multi-domain]  Cd Length: 603  Bit Score: 49.23  E-value: 2.10e-06
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725  98 RVSVRNGEQDSILFIREAQRADSERPGPPQSIKLVDVWGFSATLEWTPPQDTGNTallGYTVQKADTKSGLWfTVLEHYH 177
Cdd:COG3401  208 RVAATDTGGESAPSNEVSVTTPTTPPSAPTGLTATADTPGSVTLSWDPVTESDAT---GYRVYRSNSGDGPF-TKVATVT 283

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|..
gi 388453725 178 RTSCIVSDLIIGNSYAFRVFAENQCG----LSETAPITTDLA 215
Cdd:COG3401  284 TTSYTDTGLTNGTTYYYRVTAVDAAGnesaPSNVVSVTTDLT 325
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
 61-120 1.69e-05

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: 42.49  E-value: 1.69e-05
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 388453725    61 QTYIRKVGDTVNLLIPFQGKPKPQAIWTHDGCAL--DTRRVSVRNGEQDSILFIREAQRADS 120
Cdd:smart00410   2 PSVTVKEGESVTLSCEASGSPPPEVTWYKQGGKLlaESGRFSVSRSGSTSTLTISNVTPEDS 63
 
Name Accession Description Interval E-value
Ig_Titin_like cd05748
Immunoglobulin (Ig)-like domain of titin and similar proteins; The members here are composed ...
 62-120 1.35e-16

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: 73.39  E-value: 1.35e-16
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725  62 TYIRKVGDTVNLLIPFQGKPKPQAIWTHDGCALDTR-RVSVRNGEQDSILFIREAQRADS 120
Cdd:cd05748    1 TIVVRAGESLRLDIPIKGRPTPTVTWSKDGQPLKETgRVQIETTASSTSLVIKNAKRSDS 60
FN3 cd00063
Fibronectin type 3 domain; One of three types of internal repeats found in the plasma protein ...
 123-212 2.94e-15

Fibronectin type 3 domain; One of three types of internal repeats found in the plasma protein fibronectin. Its tenth fibronectin type III repeat contains an RGD cell recognition sequence in a flexible loop between 2 strands. Approximately 2% of all animal proteins contain the FN3 repeat; including extracellular and intracellular proteins, membrane spanning cytokine receptors, growth hormone receptors, tyrosine phosphatase receptors, and adhesion molecules. FN3-like domains are also found in bacterial glycosyl hydrolases.


Pssm-ID: 238020 [Multi-domain]  Cd Length: 93  Bit Score: 70.22  E-value: 2.94e-15
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 123 PGPPQSIKLVDVWGFSATLEWTPPQDTGnTALLGYTVQKADTKSGLWFTVLEHYH-RTSCIVSDLIIGNSYAFRVFAENQ 201
Cdd:cd00063    1 PSPPTNLRVTDVTSTSVTLSWTPPEDDG-GPITGYVVEYREKGSGDWKEVEVTPGsETSYTLTGLKPGTEYEFRVRAVNG 79

                         90
                 ....*....|.
gi 388453725 202 CGLSETAPITT 212
Cdd:cd00063   80 GGESPPSESVT 90
I-set pfam07679
Immunoglobulin I-set domain;
238-327 5.64e-15

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 69.21  E-value: 5.64e-15
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725  238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLG 317
Cdd:pfam07679   1 PKFTQKPKDVEVQEGESARFTCTVTGTPDPEVSWFKDGQPLRSSDRFKVTYEGGTYTLTISNVQPDDSGKYTCVATNSAG 80

                          90
                  ....*....|
gi 388453725  318 EASVDCRVDV 327
Cdd:pfam07679  81 EAEASAELTV 90
FN3 smart00060
Fibronectin type 3 domain; One of three types of internal repeat within the plasma protein, ...
 123-205 1.37e-14

Fibronectin type 3 domain; One of three types of internal repeat within the plasma protein, fibronectin. The tenth fibronectin type III repeat contains a RGD cell recognition sequence in a flexible loop between 2 strands. Type III modules are present in both extracellular and intracellular proteins.


Pssm-ID: 214495 [Multi-domain]  Cd Length: 83  Bit Score: 68.02  E-value: 1.37e-14
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725   123 PGPPQSIKLVDVWGFSATLEWTPPQDTGNTA-LLGYTVQKaDTKSGLWFTVLEHYHRTSCIVSDLIIGNSYAFRVFAENQ 201
Cdd:smart00060   1 PSPPSNLRVTDVTSTSVTLSWEPPPDDGITGyIVGYRVEY-REEGSEWKEVNVTPSSTSYTLTGLKPGTEYEFRVRAVNG 79


                   ....
gi 388453725   202 CGLS 205
Cdd:smart00060  80 AGEG 83
IgI_telokin-like cd20973
immunoglobulin-like domain of telokin and similar proteins; a member of the I-set of IgSF ...
 241-327 6.65e-14

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: 66.44  E-value: 6.65e-14
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 241 TQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRAL-THLGICSLEIRKPGPFDGGIYTCKAVNPLGEA 319
Cdd:cd20973    1 IQTLRDKEVVEGSAARFDCKVEGYPDPEVKWMKDDNPIVESRRFQIDqDEDGLCSLIISDVCGDDSGKYTCKAVNSLGEA 80


                 ....*...
gi 388453725 320 SVDCRVDV 327
Cdd:cd20973   81 TCSAELTV 88
Ig cd00096
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
 256-320 9.11e-12

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: 60.04  E-value: 9.11e-12
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 388453725 256 QLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLGEAS 320
Cdd:cd00096    2 TLTCSASGNPPPTITWYKNGKPLPPSSRDSRRSELGNGTLTISNVTLEDSGTYTCVASNSAGGSA 66
fn3 pfam00041
Fibronectin type III domain;
124-206 2.61e-11

Fibronectin type III domain;


Pssm-ID: 394996 [Multi-domain]  Cd Length: 85  Bit Score: 58.97  E-value: 2.61e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725  124 GPPQSIKLVDVWGFSATLEWTPPqDTGNTALLGYTVQKADTKSG-LWFTVLEHYHRTSCIVSDLIIGNSYAFRVFAENQC 202
Cdd:pfam00041   1 SAPSNLTVTDVTSTSLTVSWTPP-PDGNGPITGYEVEYRPKNSGePWNEITVPGTTTSVTLTGLKPGTEYEVRVQAVNGG 79


                  ....
gi 388453725  203 GLSE 206
Cdd:pfam00041  80 GEGP 83
IgI_titin_I1-like cd20951
Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of ...
 238-328 3.53e-11

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: 58.97  E-value: 3.53e-11
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGN---PKYRALTHLGICSLEIRKPGPFDGGIYTCKAVN 314
Cdd:cd20951    1 PEFIIRLQSHTVWEKSDAKLRVEVQGKPDPEVKWYKNGVPIDPSsipGKYKIESEYGVHVLHIRRVTVEDSAVYSAVAKN 80

                         90
                 ....*....|....
gi 388453725 315 PLGEASVDCRVDVK 328
Cdd:cd20951   81 IHGEASSSASVVVE 94
IgI_4_MYLK-like cd20976
Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a ...
 237-327 4.01e-11

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: 58.80  E-value: 4.01e-11
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 237 APKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKyRALTHLGICSLEIRKPGPFDGGIYTCKAVNPL 316
Cdd:cd20976    1 APSFSSVPKDLEAVEGQDFVAQCSARGKPVPRITWIRNAQPLQYAAD-RSTCEAGVGELHIQDVLPEDHGTYTCLAKNAA 79

                         90
                 ....*....|.
gi 388453725 317 GEASVDCRVDV 327
Cdd:cd20976   80 GQVSCSAWVTV 90
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
 238-314 2.20e-10

Immunoglobulin domain; This family contains immunoglobulin-like domains.


Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 56.03  E-value: 2.20e-10
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 388453725  238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVN 314
Cdd:pfam13927   2 PVITVSPSSVTVREGETVTLTCEATGSPPPTITWYKNGEPISSGSTRSRSLSGSNSTLTISNVTRSDAGTYTCVASN 78
IgI_Myotilin_C_like cd05744
Immunoglobulin (Ig)-like domain of myotilin, palladin, and myopalladin; member of the I-set of ...
 238-327 5.38e-10

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: 55.58  E-value: 5.38e-10
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKY-RALTHLGICSLEIRKPGPFDGGIYTCKAVNPL 316
Cdd:cd05744    1 PHFLQAPGDLEVQEGRLCRFDCKVSGLPTPDLFWQLNGKPVRPDSAHkMLVRENGRHSLIIEPVTKRDAGIYTCIARNRA 80

                         90
                 ....*....|.
gi 388453725 317 GEASVDCRVDV 327
Cdd:cd05744   81 GENSFNAELVV 91
IgI_4_hemolin-like cd20978
Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ...
 238-327 7.21e-10

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: 55.09  E-value: 7.21e-10
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTVTGYNTQLF-CCVRASPRPKIIWLKNKMDIQGNPKyRALTHLGicSLEIRKPGPFDGGIYTCKAVNPL 316
Cdd:cd20978    1 PKFIQKPEKNVVVKGGQDVTLpCQVTGVPQPKITWLHNGKPLQGPME-RATVEDG--TLTIINVQPEDTGYYGCVATNEI 77

                         90
                 ....*....|.
gi 388453725 317 GEASVDCRVDV 327
Cdd:cd20978   78 GDIYTETLLHV 88
IgI_2_Titin_Z1z2-like cd20972
Second Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk, and ...
 237-320 1.30e-09

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: 54.51  E-value: 1.30e-09
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 237 APKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPL 316
Cdd:cd20972    1 PPQFIQKLRSQEVAEGSKVRLECRVTGNPTPVVRWFCEGKELQNSPDIQIHQEGDLHSLIIAEAFEEDTGRYSCLATNSV 80


                 ....
gi 388453725 317 GEAS 320
Cdd:cd20972   81 GSDT 84
IgI_Myotilin_C cd05892
C-terminal immunoglobulin (Ig)-like domain of myotilin; member of the I-set of Ig superfamily ...
 238-327 7.85e-09

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: 52.08  E-value: 7.85e-09
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTH--LGICSLEIRKPGPFDGGIYTCKAVNP 315
Cdd:cd05892    1 PMFIQKPQNKKVLEGDPVRLECQISAIPPPQIFWKKNNEMLQYNTDRISLYQdnCGRICLLIQNANKKDAGWYTVSAVNE 80

                         90
                 ....*....|..
gi 388453725 316 LGEASVDCRVDV 327
Cdd:cd05892   81 AGVVSCNARLDV 92
IgI_APEG-1_like cd20975
Immunoglobulin-like domain of human Aortic Preferentially Expressed Protein-1 (APEG-1) and ...
 238-327 1.06e-08

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: 52.09  E-value: 1.06e-08
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPK-YRALTHLGICSLEIRKPGPFDGGIYTCKAVNPL 316
Cdd:cd20975    1 PTFKVSLMDQSVREGQDVIMSIRVQGEPKPVVSWLRNRQPVRPDQRrFAEEAEGGLCRLRILAAERGDAGFYTCKAVNEY 80

                         90
                 ....*....|.
gi 388453725 317 GEASVDCRVDV 327
Cdd:cd20975   81 GARQCEARLEV 91
IgI_5_Robo cd20952
Fifth Ig-like domain of Roundabout (Robo) homolog 1/2, and similar domains; a member of the ...
 240-327 5.76e-08

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: 49.80  E-value: 5.76e-08
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 240 FTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQG-NPKYRALtHLGicSLEIRKPGPFDGGIYTCKAVNPLGE 318
Cdd:cd20952    2 ILQGPQNQTVAVGGTVVLNCQATGEPVPTISWLKDGVPLLGkDERITTL-ENG--SLQIKGAEKSDTGEYTCVALNLSGE 78


                 ....*....
gi 388453725 319 ASVDCRVDV 327
Cdd:cd20952   79 ATWSAVLDV 87
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
 248-327 2.80e-07

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: 47.50  E-value: 2.80e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725   248 TTVTGYNTQLFCCVRASPRPKIIWLKNKMD-IQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLGEASVDCRVD 326
Cdd:smart00410   5 TVKEGESVTLSCEASGSPPPEVTWYKQGGKlLAESGRFSVSRSGSTSTLTISNVTPEDSGTYTCAATNSSGSASSGTTLT 84


                   .
gi 388453725   327 V 327
Cdd:smart00410  85 V 85
IgI_1_MuSK cd20970
agrin-responsive first immunoglobulin-like domains (Ig1) of the MuSK ectodomain; a member of ...
 242-329 4.60e-07

agrin-responsive first immunoglobulin-like domains (Ig1) of the MuSK ectodomain; a member of the I-set of IgSF domains; The members here are composed of the first immunoglobulin-like domains (Ig1) of the Muscle-specific kinase (MuSK). 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: 409562 [Multi-domain]  Cd Length: 92  Bit Score: 47.12  E-value: 4.60e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 242 QPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQ-GNPKYRALTHlGIcSLEIRKPGPFDGGIYTCKAVNPLGeAS 320
Cdd:cd20970    7 QPSFTVTAREGENATFMCRAEGSPEPEISWTRNGNLIIeFNTRYIVREN-GT-TLTIRNIRRSDMGIYLCIASNGVP-GS 83


                 ....*....
gi 388453725 321 VDCRVDVKV 329
Cdd:cd20970   84 VEKRITLQV 92
I-set pfam07679
Immunoglobulin I-set domain;
66-120 6.41e-07

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 46.87  E-value: 6.41e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 388453725   66 KVGDTVNLLIPFQGKPKPQAIWTHDGCAL-DTRRVSVRNGEQDSILFIREAQRADS 120
Cdd:pfam07679  13 QEGESARFTCTVTGTPDPEVSWFKDGQPLrSSDRFKVTYEGGTYTLTISNVQPDDS 68
Ig4_Peroxidasin cd05746
Fourth immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the ...
 256-322 1.21e-06

Fourth immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the fourth immunoglobulin (Ig)-like domain in peroxidasin. Peroxidasin has a peroxidase domain and interacting extracellular motifs containing four Ig-like domains. It has been suggested that peroxidasin is secreted, and has functions related to the stabilization of the extracellular matrix. It may play a part in various other important processes such as removal and destruction of cells which have undergone programmed cell death and protection of the organism against non-self.


Pssm-ID: 143223  Cd Length: 69  Bit Score: 45.25  E-value: 1.21e-06
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 388453725 256 QLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHlgiCSLEIRKPGPFDGGIYTCKAVNPLGEASVD 322
Cdd:cd05746    2 QIPCSAQGDPEPTITWNKDGVQVTESGKFHISPE---GYLAIRDVGVADQGRYECVARNTIGYASVS 65
FN3 COG3401
Fibronectin type 3 domain [General function prediction only];
98-215 2.10e-06

Fibronectin type 3 domain [General function prediction only];


Pssm-ID: 442628 [Multi-domain]  Cd Length: 603  Bit Score: 49.23  E-value: 2.10e-06
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725  98 RVSVRNGEQDSILFIREAQRADSERPGPPQSIKLVDVWGFSATLEWTPPQDTGNTallGYTVQKADTKSGLWfTVLEHYH 177
Cdd:COG3401  208 RVAATDTGGESAPSNEVSVTTPTTPPSAPTGLTATADTPGSVTLSWDPVTESDAT---GYRVYRSNSGDGPF-TKVATVT 283

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|..
gi 388453725 178 RTSCIVSDLIIGNSYAFRVFAENQCG----LSETAPITTDLA 215
Cdd:COG3401  284 TTSYTDTGLTNGTTYYYRVTAVDAAGnesaPSNVVSVTTDLT 325
IgI_Lingo-1 cd20969
Immunoglobulin I-set domain of the Leucine-rich repeat and immunoglobin-like domain-containing ...
 244-327 3.73e-06

Immunoglobulin I-set domain of the Leucine-rich repeat and immunoglobin-like domain-containing protein 1 (Lingo-1); The members here are composed of the immunoglobulin I-set (IgI) domain of the Leucine-rich repeat and immunoglobin-like domain-containing protein 1 (Lingo-1). Human Lingo-1 is a central nervous system-specific transmembrane glycoprotein also known as LERN-1, which functions as a negative regulator of neuronal survival, axonal regeneration, and oligodendrocyte differentiation and myelination. Lingo-1 is a key component of the Nogo receptor signaling complex (RTN4R/NGFR) in RhoA activation responsible for some inhibition of axonal regeneration by myelin-associated factors. The ligand-binding ectodomain of human Lingo-1 contains a bimodular, kinked structure composed of leucine-rich repeat (LRR) and immunoglobulin (Ig)-like modules. Diseases associated with Lingo-1 include mental retardation, autosomal recessive 64 and essential tremor. 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 Lingo-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: 409561  Cd Length: 92  Bit Score: 44.69  E-value: 3.73e-06
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 244 LADCTTV-TGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLGEASVD 322
Cdd:cd20969    8 KAQQVFVdEGHTVQFVCRADGDPPPAILWLSPRKHLVSAKSNGRLTVFPDGTLEVRYAQVQDNGTYLCIAANAGGNDSMP 87


                 ....*
gi 388453725 323 CRVDV 327
Cdd:cd20969   88 AHLHV 92
FN3 COG3401
Fibronectin type 3 domain [General function prediction only];
118-215 4.53e-06

Fibronectin type 3 domain [General function prediction only];


Pssm-ID: 442628 [Multi-domain]  Cd Length: 603  Bit Score: 48.07  E-value: 4.53e-06
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 118 ADSERPGPPQSIKLVDVWGFSATLEWTPPQDTGNTallGYTVQKADTKSGLWFTVLEHYHRTSCIVSDLIIGNSYAFRVF 197
Cdd:COG3401  322 TDLTPPAAPSGLTATAVGSSSITLSWTASSDADVT---GYNVYRSTSGGGTYTKIAETVTTTSYTDTGLTPGTTYYYKVT 398

                         90       100
                 ....*....|....*....|..
gi 388453725 198 AENQCGL----SETAPITTDLA 215
Cdd:COG3401  399 AVDAAGNesapSEEVSATTASA 420
IgI_M-protein_C cd05891
C-terminal immunoglobulin (Ig)-like domain of M-protein; member of the I-set of Ig superfamily ...
 244-327 7.63e-06

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: 43.74  E-value: 7.63e-06
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 244 LADCTTVT-GYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYR-ALTHLGICSLEIRKPGPFDGGIYTCKAVNPLGEASV 321
Cdd:cd05891    7 LPDVVTIMeGKTLNLTCTVFGNPDPEVIWFKNDQDIELSEHYSvKLEQGKYASLTIKGVTSEDSGKYSINVKNKYGGETV 86


                 ....*.
gi 388453725 322 DCRVDV 327
Cdd:cd05891   87 DVTVSV 92
IgI_4_Dscam cd20956
Fourth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
 237-327 1.30e-05

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: 43.32  E-value: 1.30e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 237 APKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRA----------LTHLGICSLEIRkpgpfDGG 306
Cdd:cd20956    1 APVLLETFSEQTLQPGPSVSLKCVASGNPLPQITWTLDGFPIPESPRFRVgdyvtsdgdvVSYVNISSVRVE-----DGG 75

                         90       100
                 ....*....|....*....|.
gi 388453725 307 IYTCKAVNPLGEASVDCRVDV 327
Cdd:cd20956   76 EYTCTATNDVGSVSHSARINV 96
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
 61-120 1.69e-05

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: 42.49  E-value: 1.69e-05
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 388453725    61 QTYIRKVGDTVNLLIPFQGKPKPQAIWTHDGCAL--DTRRVSVRNGEQDSILFIREAQRADS 120
Cdd:smart00410   2 PSVTVKEGESVTLSCEASGSPPPEVTWYKQGGKLlaESGRFSVSRSGSTSTLTISNVTPEDS 63
IgI_1_Titin_Z1z2-like cd20974
First Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk and ...
 238-328 2.06e-05

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: 42.73  E-value: 2.06e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNK--MDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNP 315
Cdd:cd20974    1 PVFTQPLQSVVVLEGSTATFEAHVSGKPVPEVSWFRDGqvISTSTLPGVQISFSDGRAKLSIPAVTKANSGRYSLTATNG 80

                         90
                 ....*....|...
gi 388453725 316 LGEASVDCRVDVK 328
Cdd:cd20974   81 SGQATSTAELLVL 93
Ig_Titin_like cd05748
Immunoglobulin (Ig)-like domain of titin and similar proteins; The members here are composed ...
 261-327 2.28e-05

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: 42.19  E-value: 2.28e-05
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 388453725 261 VRASPRPKIIWLKNKMDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLGEASVDCRVDV 327
Cdd:cd05748   16 IKGRPTPTVTWSKDGQPLKETGRVQIETTASSTSLVIKNAKRSDSGKYTLTLKNSAGEKSATINVKV 82
Ig5_Contactin cd04969
Fifth immunoglobulin (Ig) domain of contactin; The members here are composed of the fifth ...
 259-320 2.72e-05

Fifth immunoglobulin (Ig) domain of contactin; The members here are composed of the fifth immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma.


Pssm-ID: 409358 [Multi-domain]  Cd Length: 89  Bit Score: 42.06  E-value: 2.72e-05
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 388453725 259 CCVRASPRPKIIWLKNKMDIQGNPKyralthlgIC-----SLEIRKPGPFDGGIYTCKAVNPLGEAS 320
Cdd:cd04969   24 CKPKASPKPTISWSKGTELLTNSSR--------ICilpdgSLKIKNVTKSDEGKYTCFAVNFFGKAN 82
IgI_2_FGFRL1-like cd05856
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1 ...
 238-327 2.87e-05

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: 42.15  E-value: 2.87e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTV----TGYNTQLFCCVRASPRPKIIWLKN--KMDIQ--GNPKYRALThlgicsLEIRKPGPFDGGIYT 309
Cdd:cd05856    1 PRFTQPAKMRRRViarpVGSSVRLKCVASGNPRPDITWLKDnkPLTPPeiGENKKKKWT------LSLKNLKPEDSGKYT 74

                         90
                 ....*....|....*...
gi 388453725 310 CKAVNPLGEASVDCRVDV 327
Cdd:cd05856   75 CHVSNRAGEINATYKVDV 92
IgI_3_Robo cd05725
Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ...
 245-327 8.12e-05

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: 40.46  E-value: 8.12e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 245 ADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIqgnPKYRALThLGICSLEIRKPGPFDGGIYTCKAVNPLGEASVDCR 324
Cdd:cd05725    5 QNQVVLVDDSAEFQCEVGGDPVPTVRWRKEDGEL---PKGRYEI-LDDHSLKIRKVTAGDMGSYTCVAENMVGKIEASAT 80


                 ...
gi 388453725 325 VDV 327
Cdd:cd05725   81 LTV 83
ig pfam00047
Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of ...
 252-320 1.12e-04

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: 40.26  E-value: 1.12e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 388453725  252 GYNTQLFCCVR-ASPRPKIIWLKNKM-DIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLGEAS 320
Cdd:pfam00047  11 GDSATLTCSAStGSPGPDVTWSKEGGtLIESLKVKHDNGRTTQSSLLISNVTKEDAGTYTCVVNNPGGSAT 81
IgI_Twitchin_like cd20949
C-terminal immunoglobulin-like domain of the myosin-associated giant protein kinase Twitchin, ...
 239-320 1.26e-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: 40.39  E-value: 1.26e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 239 KFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLGE 318
Cdd:cd20949    1 TFTENAYVTTVKEGQSATILCEVKGEPQPNVTWHFNGQPISASVADMSKYRILADGLLINKVTQDDTGEYTCRAYQVNSI 80


                 ..
gi 388453725 319 AS 320
Cdd:cd20949   81 AS 82
IgI_1_Palladin_C cd05893
First C-terminal immunoglobulin (Ig)-like domain of palladin; member of the I-set of Ig ...
 238-327 1.31e-04

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: 40.47  E-value: 1.31e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTH--LGICSLEIRKPGPFDGGIYTCKAVNP 315
Cdd:cd05893    1 PFFEMKLKHYKIFEGMPVTFTCRVAGNPKPKIYWFKDGKQISPKSDHYTIQRdlDGTCSLHTTASTLDDDGNYTIMAANP 80

                         90
                 ....*....|..
gi 388453725 316 LGEASVDCRVDV 327
Cdd:cd05893   81 QGRISCTGRLMV 92
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
 51-120 2.28e-04

Immunoglobulin domain; This family contains immunoglobulin-like domains.


Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 39.09  E-value: 2.28e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 388453725   51 PKIWLPRalrQTYIRKVGDTVNLLIPFQGKPKPQAIWTHDG-CALDTRRVSVRNGEQDSILFIREAQRADS 120
Cdd:pfam13927   2 PVITVSP---SSVTVREGETVTLTCEATGSPPPTITWYKNGePISSGSTRSRSLSGSNSTLTISNVTRSDA 69
IgI_2_Palladin_C cd20990
Second C-terminal immunoglobulin (Ig)-like domain of palladin; member of the I-set of Ig ...
 238-320 2.60e-04

Second 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: 409582  Cd Length: 91  Bit Score: 39.31  E-value: 2.60e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHL-GICSLEIRKPGPFDGGIYTCKAVNPL 316
Cdd:cd20990    1 PHFLQAPGDLTVQEGKLCRMDCKVSGLPTPDLSWQLDGKPIRPDSAHKMLVREnGVHSLIIEPVTSRDAGIYTCIATNRA 80


                 ....
gi 388453725 317 GEAS 320
Cdd:cd20990   81 GQNS 84
Ig4_L1-NrCAM_like cd04978
Fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), ...
 251-327 3.07e-04

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: 38.97  E-value: 3.07e-04
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 388453725 251 TGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALT-HLGICSLEIRKPGpfDGGIYTCKAVNPLGEASVDCRVDV 327
Cdd:cd04978   13 PGETGELICEAEGNPQPTITWRLNGVPIEPAPEDMRRTvDGRTLIFSNLQPN--DTAVYQCNASNVHGYLLANAFLHV 88
Ig_Pro_neuregulin cd05750
Immunoglobulin (Ig)-like domain in neuregulins; The members here are composed of the ...
 264-327 4.64e-04

Immunoglobulin (Ig)-like domain in neuregulins; The members here are composed of the immunoglobulin (Ig)-like domain in neuregulins (NRGs). NRGs are signaling molecules which participate in cell-cell interactions in the nervous system, breast, heart, and other organ systems, and are implicated in the pathology of diseases including schizophrenia, multiple sclerosis, and breast cancer. There are four members of the neuregulin gene family (NRG-1, NRG-2, NRG-3, and NRG-4). The NRG-1 protein, binds to and activates the tyrosine kinases receptors ErbB3 and ErbB4, initiating signaling cascades. The other NRGs proteins bind one or the other or both of these ErbBs. NRG-1 has multiple functions: in the brain it regulates various processes such as radial glia formation and neuronal migration, dendritic development, and expression of neurotransmitters receptors, while in the peripheral nervous system NRG-1 regulates processes such as target cell differentiation, and Schwann cell survival. There are many NRG-1 isoforms which arise from the alternative splicing of mRNA. Less is known of the functions of the other NRGs. NRG-2 and NRG-3 are expressed predominantly in the nervous system. NRG-2 is expressed by motor neurons and terminal Schwann cells, and is concentrated near synaptic sites and may be a signal that regulates synaptic differentiation. NRG-4 has been shown to direct pancreatic islet cell development towards the delta-cell lineage.


Pssm-ID: 409408 [Multi-domain]  Cd Length: 92  Bit Score: 38.65  E-value: 4.64e-04
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 388453725 264 SPRPKIIWLKN----------KMDIQGNPKYRALtHLGICSLEirkpgpfDGGIYTCKAVNPLGEASVDCRVDV 327
Cdd:cd05750   27 NPSPRYRWFKDgkelnrkrpkNIKIRNKKKNSEL-QINKAKLE-------DSGEYTCVVENILGKDTVTGNVTV 92
IgI_1_Neogenin_like cd05722
First immunoglobulin (Ig)-like domain in neogenin, and similar domains; member of the I-set of ...
 240-314 5.02e-04

First 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 first 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: 409387  Cd Length: 97  Bit Score: 38.61  E-value: 5.02e-04
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 388453725 240 FTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQ--GNPKYRALTH--LGICSLEIRKPGPFDGGIYTCKAVN 314
Cdd:cd05722    4 FLSEPSDIVAMRGGPVVLNCSAESDPPPKIEWKKDGVLLNlvSDERRQQLPNgsLLITSVVHSKHNKPDEGFYQCVAQN 82
IgI_2_Follistatin_like cd05736
Second immunoglobulin (Ig)-like domain of a Follistatin-related protein 5, and similar domains; ...
 252-317 5.62e-04

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: 5.62e-04
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 388453725 252 GYNTQLFCCVRASPRPKIIWLKNKMDIqgNPKY-RALTHLGICS-LEIRKPGPFDGGIYTCKAVNPLG 317
Cdd:cd05736   15 GVEASLRCHAEGIPLPRVQWLKNGMDI--NPKLsKQLTLIANGSeLHISNVRYEDTGAYTCIAKNEGG 80
IgI_3_FGFR2 cd05858
Third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor 2 (FGFR2); member ...
 245-317 7.00e-04

Third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor 2 (FGFR2); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain of human fibroblast growth factor receptor 2 (FGFR2). Fibroblast growth factors (FGFs) participate in morphogenesis, development, angiogenesis, and wound healing. These FGF-stimulated processes are mediated by four FGFR tyrosine kinases (FGRF1-4). FGFRs are comprised of an extracellular portion consisting of three Ig-like domains, a transmembrane helix, and a cytoplasmic portion having protein tyrosine kinase activity. The highly conserved Ig-like domains 2 and 3, and the linker region between D2 and D3 define a general binding site for FGFs. FGFR2 is required for male sex determination. 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: 409444  Cd Length: 105  Bit Score: 38.40  E-value: 7.00e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 245 ADCTTVTGYNTQLFCCVRASPRPKIIWLK------NKMDIQGNPKYRALTHLGICS-------LEIRKPGPFDGGIYTCK 311
Cdd:cd05858    9 ANTSVVVGTDAEFVCKVYSDAQPHIQWLKhvekngSKYGPDGLPYVEVLKTAGVNTtdkeievLYLRNVTFEDAGEYTCL 88


                 ....*.
gi 388453725 312 AVNPLG 317
Cdd:cd05858   89 AGNSIG 94
IgI_2_FGFR_like cd05729
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor, and similar ...
 238-327 9.17e-04

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: 37.97  E-value: 9.17e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTV----TGYNTQLFCCVRASPRPKIIWLKN---KMDIQGNPKYRALTHLgiCSLEIRKPGPFDGGIYTC 310
Cdd:cd05729    1 PRFTDTEKMEEREhalpAANKVRLECGAGGNPMPNITWLKDgkeFKKEHRIGGTKVEEKG--WSLIIERAIPRDKGKYTC 78

                         90
                 ....*....|....*..
gi 388453725 311 KAVNPLGEASVDCRVDV 327
Cdd:cd05729   79 IVENEYGSINHTYDVDV 95
IgI_1_Titin-A168_like cd20971
First immunoglobulin-like domains A168 within the A-band segment of human cardiac titin, and ...
 237-320 1.01e-03

First immunoglobulin-like domains A168 within the A-band segment of human cardiac titin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the first immunoglobulin-like domain A168 within the A-band segment of human cardiac titin. 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 structures of the titin-A168169 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: 409563  Cd Length: 93  Bit Score: 37.83  E-value: 1.01e-03
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 237 APKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKY-RALTHLGICSLEIRKPG-PFDGGIYTCKAVN 314
Cdd:cd20971    1 APHFKEELRNLNVRYQSNATLVCKVTGHPKPIVKWYRQGKEIIADGLKyRIQEFKGGYHQLIIASVtDDDATVYQVRATN 80


                 ....*.
gi 388453725 315 PLGEAS 320
Cdd:cd20971   81 QGGSVS 86
IgC_1_Robo cd07693
First immunoglobulin (Ig)-like constant domain in Robo (roundabout) receptors, and similar ...
 238-319 1.60e-03

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: 37.53  E-value: 1.60e-03
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 238 PKFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKN-------KMDIQGNPKyrALTHLGICSLEI---RKPGPfDGGI 307
Cdd:cd07693    1 PRIVEHPSDLIVSKGDPATLNCKAEGRPTPTIQWLKNgqpletdKDDPRSHRI--VLPSGSLFFLRVvhgRKGRS-DEGV 77

                         90
                 ....*....|..
gi 388453725 308 YTCKAVNPLGEA 319
Cdd:cd07693   78 YVCVAHNSLGEA 89
IgI_Myomesin_like_C cd05737
C-terminal immunoglobulin (Ig)-like domain of myomesin and M-protein; member of the I-set of ...
 244-327 1.98e-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: 36.80  E-value: 1.98e-03
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 244 LADCTTVT-GYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLG-ICSLEIRKPGPFDGGIYTCKAVNPLGEASV 321
Cdd:cd05737    7 LPDVVTIMeGKTLNLTCNVWGDPPPEVSWLKNDQALAFLDHCNLKVEAGrTVYFTINGVSSEDSGKYGLVVKNKYGSETS 86


                 ....*.
gi 388453725 322 DCRVDV 327
Cdd:cd05737   87 DVTVSV 92
IgI_1_Titin_Z1z2-like cd20974
First Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk and ...
 61-122 2.09e-03

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: 36.95  E-value: 2.09e-03
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 388453725  61 QTYIRKVGDTVNLLIPFQGKPKPQAIWTHDGCALDTRR---VSVRNGEQDSILFIREAQRADSER 122
Cdd:cd20974    8 QSVVVLEGSTATFEAHVSGKPVPEVSWFRDGQVISTSTlpgVQISFSDGRAKLSIPAVTKANSGR 72
IgI_3_hemolin-like cd20977
Third immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ...
 246-317 2.16e-03

Third 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 third 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 third 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 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, including vascular (VCAM), intercellular (ICAM), neural (NCAM) and mucosal addressin (MADCAM) cell adhesion molecules, as well as junction adhesion molecules (JAM).


Pssm-ID: 409569  Cd Length: 93  Bit Score: 36.99  E-value: 2.16e-03
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 388453725 246 DCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHlGICS---LEIRKPGPFDGGIYTCKAVNPLG 317
Cdd:cd20977    9 DMMAKAGDVTMIYCMYGSNPTAHPNYFKNGKDVNGNPEDRITRH-NRTSgkrLLFKTTLPEDEGVYTCEVDNGVG 82
IgI_2_MuSK cd20968
agrin-responsive second immunoglobulin-like domains (Ig2) of the Muscle-specific kinase (MuSK) ...
 239-319 2.24e-03

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: 36.84  E-value: 2.24e-03
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 239 KFTQPLADCTTVTGYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHlgiCSLEIRKPGPFDGGIYTCKAVNPLGE 318
Cdd:cd20968    1 KITRPPTNVTIIEGLKAVLPCTTMGNPKPSVSWIKGDDLIKENNRIAVLES---GSLRIHNVQKEDAGQYRCVAKNSLGI 77


                 .
gi 388453725 319 A 319
Cdd:cd20968   78 A 78
IgI_3_FGFR cd04974
Third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor (FGFR); member of ...
 244-317 2.46e-03

Third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor (FGFR); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor (FGFR). Fibroblast growth factors (FGFs) participate in morphogenesis, development, angiogenesis, and wound healing. These FGF-stimulated processes are mediated by four FGFR tyrosine kinases (FGRF1-4). FGFRs are comprised of an extracellular portion consisting of three Ig-like domains, a transmembrane helix, and a cytoplasmic portion having protein tyrosine kinase activity. The highly conserved Ig-like domains 2 and 3, and the linker region between D2 and D3 define a general binding site for FGFs. 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: 409363  Cd Length: 102  Bit Score: 37.02  E-value: 2.46e-03
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 388453725 244 LADCTTVTGYNTQLFCCVRASPRPKIIWLK------NKMDIQGNPKYRALTHLGICS------LEIRKPGPFDGGIYTCK 311
Cdd:cd04974    8 PANQTVVLGSDVEFHCKVYSDAQPHIQWLKhvevngSKYGPDGLPYVTVLKVAGVNTtgeentLTISNVTFDDAGEYICL 87


                 ....*.
gi 388453725 312 AVNPLG 317
Cdd:cd04974   88 AGNSIG 93
IgI_3_WFIKKN-like cd05765
Third immunoglobulin-like domain of the human WFIKKN (WAP, follistatin, immunoglobulin, Kunitz ...
 252-322 5.91e-03

Third immunoglobulin-like domain of the human WFIKKN (WAP, follistatin, immunoglobulin, Kunitz and NTR domain-containing protein), and similar domains; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin-like domain of the human WFIKKN (WAP, follistatin, immunoglobulin, Kunitz and NTR domain-containing protein) and similar proteins. WFIKKN is a secreted protein that consists of multiple types of protease inhibitory modules, including two tandem Kunitz-type protease inhibitor-domains. The Ig superfamily is a heterogenous group of proteins built on a common fold comprised of a sandwich of two beta sheets. Members of the Ig superfamily are components of immunoglobulin, neuroglia, cell surface glycoproteins, such as T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, such as 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. 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: 409422 [Multi-domain]  Cd Length: 95  Bit Score: 35.60  E-value: 5.91e-03
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 388453725 252 GYNTQLFCCVRASPRPKIIWLKN-----KMDIQGNPKYRALTHLGICSLEIRKPGPFDGGIYTCKAVNPLGEASVD 322
Cdd:cd05765   15 GETASFHCDVTGRPQPEITWEKQvpgkeNLIMRPNHVRGNVVVTNIGQLVIYNAQPQDAGLYTCTARNSGGLLRAN 90
IgI_1_Contactin cd04967
First immunoglobulin (Ig) domain of contactin; member of the I-set of (Ig) superfamily domains; ...
 257-317 5.99e-03

First immunoglobulin (Ig) domain of contactin; member of the I-set of (Ig) superfamily domains; The members here are composed of the first immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma. This group belongs to the I-set of IgSF domains.


Pssm-ID: 409356 [Multi-domain]  Cd Length: 96  Bit Score: 35.68  E-value: 5.99e-03
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 388453725 257 LFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLGicSLEIRKPGPF-DGGIYTCKAVNPLG 317
Cdd:cd04967   24 LNCRARANPVPSYRWLMNGTEIDLESDYRYSLVDG--TLVISNPSKAkDAGHYQCLATNTVG 83
IgI_2_Robo cd05724
Second immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ...
 262-318 7.03e-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: 35.07  E-value: 7.03e-03
                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*...
gi 388453725 262 RASPRPKIIWLKN-KMDIQGNPKYRALtHLGicSLEIRKPGPFDGGIYTCKAVNPLGE 318
Cdd:cd05724   23 RGHPEPTVSWRKDgQPLNLDNERVRIV-DDG--NLLIAEARKSDEGTYKCVATNMVGE 77
IgI_SALM5_like cd05764
Immunoglobulin domain of human Synaptic Adhesion-Like Molecule 5 (SALM5) and similar proteins; ...
 252-329 7.89e-03

Immunoglobulin domain of human Synaptic Adhesion-Like Molecule 5 (SALM5) and similar proteins; member of the I-set of IgSF domains; This group contains the immunoglobulin domain of human Synaptic Adhesion-Like Molecule 5 (SALM5) and similar proteins. The SALM (for synaptic adhesion-like molecules; also known as Lrfn for leucine-rich repeat and fibronectin type III domain containing) family of adhesion molecules consists of five known members: SALM1/Lrfn2, SALM2/Lrfn1, SALM3/Lrfn4, SALM4/Lrfn3, and SALM5/Lrfn5. SALMs share a similar domain structure, containing leucine-rich repeats (LRRs), an immunoglobulin (Ig) domain, and a fibronectin III (FNIII) domain, followed by a transmembrane domain and a C-terminal PDZ-binding motif. SALM5 is implicated in autism spectrum disorders (ASDs) and schizophrenia, induces presynaptic differentiation in contacting axons. SALM5 interacts with the Ig domains of LAR (Leukocyte common Antigen-Related) family receptor protein tyrosine phosphatases (LAR-RPTPs; LAR, PTPdelta, and PTPsigma). In addition, PTPdelta is implicated in ASDs, ADHD, bipolar disorder, and restless leg syndrome. Studies have shown that LAR-RPTPs are novel and splicing-dependent presynaptic ligands for SALM5, and that they mediate SALM5-dependent presynaptic differentiation. Furthermore, SALM5 maintains AMPA receptor (AMPAR)-mediated excitatory synaptic transmission through mechanisms involving the interaction of SALM5 with LAR-RPTPs. This group belongs to the I-set of immunoglobulin superfamily (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: 409421 [Multi-domain]  Cd Length: 88  Bit Score: 35.14  E-value: 7.89e-03
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 388453725 252 GYNTQLFCCVRASPRPKIIWLKNKMDIQGNPKYRALTHLGicSLEIRKPGPFDGGIYTCKAVNPLGEASVdcRVDVKV 329
Cdd:cd05764   15 GQRATLRCKARGDPEPAIHWISPEGKLISNSSRTLVYDNG--TLDILITTVKDTGAFTCIASNPAGEATA--RVELHI 88
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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