4um9: Difference between revisions
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==Crystal structure of alpha V beta 6 with peptide== | |||
<StructureSection load='4um9' size='340' side='right'caption='[[4um9]], [[Resolution|resolution]] 2.50Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4um9]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4UM9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4UM9 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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=4um9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4um9 OCA], [https://pdbe.org/4um9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4um9 RCSB], [https://www.ebi.ac.uk/pdbsum/4um9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4um9 ProSAT]</span></td></tr> | |||
</table> | |||
== Disease == | |||
[https://www.uniprot.org/uniprot/ITB6_HUMAN ITB6_HUMAN] Hypocalcified amelogenesis imperfecta;Hypoplastic amelogenesis imperfecta. | |||
== Function == | |||
[https://www.uniprot.org/uniprot/ITB6_HUMAN ITB6_HUMAN] Integrin alpha-V/beta-6 is a receptor for fibronectin and cytotactin. It recognizes the sequence R-G-D in its ligands. Internalisation of integrin alpha-V/beta-6 via clathrin-mediated endocytosis promotes carcinoma cell invasion.<ref>PMID:17545607</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Eight integrin alpha-beta heterodimers recognize ligands with an Arg-Gly-Asp (RGD) motif. However, the structural mechanism by which integrins differentiate among extracellular proteins with RGD motifs is not understood. Here, crystal structures, mutations and peptide-affinity measurements show that alphaVbeta6 binds with high affinity to a RGDLXXL/I motif within the prodomains of TGF-beta1 and TGF-beta3. The LXXL/I motif forms an amphipathic alpha-helix that binds in a hydrophobic pocket in the beta6 subunit. Elucidation of the basis for ligand binding specificity by the integrin beta subunit reveals contributions by three different betaI-domain loops, which we designate specificity-determining loops (SDLs) 1, 2 and 3. Variation in a pair of single key residues in SDL1 and SDL3 correlates with the variation of the entire beta subunit in integrin evolution, thus suggesting a paradigmatic role in overall beta-subunit function. | |||
Structural determinants of integrin beta-subunit specificity for latent TGF-beta,Dong X, Hudson NE, Lu C, Springer TA Nat Struct Mol Biol. 2014 Nov 10. doi: 10.1038/nsmb.2905. PMID:25383667<ref>PMID:25383667</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4um9" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Integrin 3D structures|Integrin 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Dong X]] | |||
[[Category: Springer TA]] | |||
Latest revision as of 11:26, 6 November 2024
Crystal structure of alpha V beta 6 with peptide
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