3EHQ,1ZLM


Conserved Protein Domain Family
SH3_OSTF1

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cd11772: SH3_OSTF1 
Click on image for an interactive view with Cn3D
Src Homology 3 domain of metazoan osteoclast stimulating factor 1
OSTF1, also named OSF or SH3P2, is a signaling protein containing SH3 and ankyrin-repeat domains. It acts through a Src-related pathway to enhance the formation of osteoclasts and bone resorption. It also acts as a negative regulator of cell motility. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.
Statistics
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PSSM-Id: 212706
Aligned: 17 rows
Threshold Bit Score: 94.6741
Created: 2-Jun-2011
Updated: 2-Oct-2020
Structure
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Program:
Drawing:
Aligned Rows:
 
peptide ligand
Conserved site includes 9 residues -Click on image for an interactive view with Cn3D
Feature 1:peptide ligand binding site [polypeptide binding site]
Evidence:
  • Comment:based on the binding of peptide ligands to the SH3 domains of other superfamily members
  • Comment:SH3 domains typically bind proline-rich ligands, preferentially to PxxP motifs.
  • Citation:PMID 7664083
  • Citation:PMID 7735837
  • Comment:flanking hinge and loops (RT and n-Src) confer sequence specificity for ligand residues outside the core binding motif

Sequence Alignment
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Format: Row Display: Color Bits: Type Selection:
Feature 1             # #  #   #                  ##            # ##   
3EHQ_A        16 VFRALYTFEPRTpDELYIEEGDIIYITDXSD-TNWWKGTSKGRTGLIPSNYVAE 68  human
CAJ44456      20 VVRAIYAYASQHaDELSFEEGDTLYIIEKND-DGWWRAKCGKKEGLIPSNYIEG 72  Suberites domuncula
CBY19569      17 CFRAHWGYEGAAdDELSFEEGDLVYISEQHD-GGWWRGTCKGRSGLVPSNYLVA 69  Oikopleura dioica
XP_002126742  21 VYKALWSYAAVQsDELSFNEGDRLYISDQSE-SGWWKATLNGKSGIVPGNYVAE 73  Ciona intestinalis
EFN88679     244 VVRALCKYTAQHtNELSFDEGDLLYVYDKDTdPNWWTAKCGDQKGLVPVTYVEE 297 Harpegnathos saltator
XP_003141903  18 VYRALYDYTAQNdKELSFNEGDLLYVSDSSNdSQWWPARCRNQTGLIPANYVMT 71  Loa loa
EFW44389      20 VFKAVFDYKAQRpDELTFEEGDVLYILEKFN-NGWWKARTGKNVGLIPSNYVEA 72  Capsaspora owczarzaki ATCC 30864
ACG76184      20 VFRALYKYNAQQpDELSFEEGDLLYVFDMTSdPNWWKARCDRRSGLIPSNYVEE 73  lone star tick
ACO10542      20 FKRALFAFESSEpDELCFKEGDLLYIIDWKSnPDWWTAKLKDKKGLVPANYFTP 73  Caligus rogercresseyi
XP_001742395  21 VYRAVYPYTAQHsDELSFEEGEMIYVQEKQA-DGWYRATIGGKSGIIPGNYVEA 73  Monosiga brevicollis MX1

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