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| ==monophosphorylated (747pY) beta3 integrin cytoplasmic tail under membrane mimetic conditions== | | ==monophosphorylated (747pY) beta3 integrin cytoplasmic tail under membrane mimetic conditions== |
| <StructureSection load='2ljd' size='340' side='right'caption='[[2ljd]], [[NMR_Ensembles_of_Models | 15 NMR models]]' scene=''> | | <StructureSection load='2ljd' size='340' side='right'caption='[[2ljd]]' scene=''> |
| == Structural highlights == | | == Structural highlights == |
| <table><tr><td colspan='2'>[[2ljd]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LJD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2LJD FirstGlance]. <br> | | <table><tr><td colspan='2'>[[2ljd]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LJD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2LJD FirstGlance]. <br> |
| </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr> | | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR, 15 models</td></tr> |
| <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2lje|2lje]], [[2ljf|2ljf]]</div></td></tr> | | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr> |
| <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ITGB3, GP3A ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
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| <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ljd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ljd OCA], [https://pdbe.org/2ljd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ljd RCSB], [https://www.ebi.ac.uk/pdbsum/2ljd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ljd ProSAT]</span></td></tr> | | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ljd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ljd OCA], [https://pdbe.org/2ljd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ljd RCSB], [https://www.ebi.ac.uk/pdbsum/2ljd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ljd ProSAT]</span></td></tr> |
| </table> | | </table> |
| == Disease ==
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| [[https://www.uniprot.org/uniprot/ITB3_HUMAN ITB3_HUMAN]] Defects in ITGB3 are a cause of Glanzmann thrombasthenia (GT) [MIM:[https://omim.org/entry/273800 273800]]; also known as thrombasthenia of Glanzmann and Naegeli. GT is the most common inherited disease of platelets. It is an autosomal recessive disorder characterized by mucocutaneous bleeding of mild-to-moderate severity and the inability of this integrin to recognize macromolecular or synthetic peptide ligands. GT has been classified clinically into types I and II. In type I, platelets show absence of the glycoprotein IIb/beta-3 complexes at their surface and lack fibrinogen and clot retraction capability. In type II, the platelets express the glycoprotein IIb/beta-3 complex at reduced levels (5-20% controls), have detectable amounts of fibrinogen, and have low or moderate clot retraction capability. The platelets of GT 'variants' have normal or near normal (60-100%) expression of dysfunctional receptors.<ref>PMID:2392682</ref> <ref>PMID:1371279</ref> <ref>PMID:1602006</ref> <ref>PMID:1438206</ref> <ref>PMID:8781422</ref> <ref>PMID:9376589</ref> <ref>PMID:9215749</ref> <ref>PMID:9790984</ref> <ref>PMID:9684783</ref> <ref>PMID:10233432</ref> <ref>PMID:11588040</ref> <ref>PMID:11897046</ref> <ref>PMID:12083483</ref> <ref>PMID:12353082</ref> <ref>PMID:15583747</ref> <ref>PMID:15634267</ref> <ref>PMID:15748237</ref>
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| == Function ==
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| [[https://www.uniprot.org/uniprot/ITB3_HUMAN ITB3_HUMAN]] Integrin alpha-V/beta-3 is a receptor for cytotactin, fibronectin, laminin, matrix metalloproteinase-2, osteopontin, osteomodulin, prothrombin, thrombospondin, vitronectin and von Willebrand factor. Integrin alpha-IIb/beta-3 is a receptor for fibronectin, fibrinogen, plasminogen, prothrombin, thrombospondin and vitronectin. Integrins alpha-IIb/beta-3 and alpha-V/beta-3 recognize the sequence R-G-D in a wide array of ligands. Integrin alpha-IIb/beta-3 recognizes the sequence H-H-L-G-G-G-A-K-Q-A-G-D-V in fibrinogen gamma chain. Following activation integrin alpha-IIb/beta-3 brings about platelet/platelet interaction through binding of soluble fibrinogen. This step leads to rapid platelet aggregation which physically plugs ruptured endothelial surface. In case of HIV-1 infection, the interaction with extracellular viral Tat protein seems to enhance angiogenesis in Kaposi's sarcoma lesions.
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| <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| __TOC__ | | __TOC__ |
| </StructureSection> | | </StructureSection> |
| [[Category: Human]] | | [[Category: Homo sapiens]] |
| [[Category: Large Structures]] | | [[Category: Large Structures]] |
| [[Category: Deshmukh, L]] | | [[Category: Deshmukh L]] |
| [[Category: Vinogradova, O]] | | [[Category: Vinogradova O]] |
| [[Category: Cell adhesion]]
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| [[Category: Membrane protein]]
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| [[Category: Tyrosine phosphorylation]]
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