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1m1x

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[[Image:1m1x.jpg|left|200px]]
 
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{{Structure
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==CRYSTAL STRUCTURE OF THE EXTRACELLULAR SEGMENT OF INTEGRIN ALPHA VBETA3 BOUND TO MN2+==
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|PDB= 1m1x |SIZE=350|CAPTION= <scene name='initialview01'>1m1x</scene>, resolution 3.3&Aring;
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<StructureSection load='1m1x' size='340' side='right'caption='[[1m1x]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene>
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<table><tr><td colspan='2'>[[1m1x]] is a 2 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=1M1X OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1M1X FirstGlance]. <br>
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|ACTIVITY=
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.3&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene></td></tr>
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|DOMAIN=<span class='plainlinks'>[http://www.ncbi.nlm.nih.gov/Structure/cdd/cddsrv.cgi?uid=smart00191 Int_alpha], [http://www.ncbi.nlm.nih.gov/Structure/cdd/cddsrv.cgi?uid=pfam08441 Integrin_alpha2], [http://www.ncbi.nlm.nih.gov/Structure/cdd/cddsrv.cgi?uid=pfam07965 Integrin_B_tail], [http://www.ncbi.nlm.nih.gov/Structure/cdd/cddsrv.cgi?uid=pfam00362 Integrin_beta]</span>
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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=1m1x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m1x OCA], [https://pdbe.org/1m1x PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1m1x RCSB], [https://www.ebi.ac.uk/pdbsum/1m1x PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1m1x ProSAT]</span></td></tr>
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|RELATEDENTRY=[[1jv2|1JV2]], [[1m1u|1M1U]]
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1m1x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m1x OCA], [http://www.ebi.ac.uk/pdbsum/1m1x PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1m1x RCSB]</span>
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== Function ==
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}}
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[https://www.uniprot.org/uniprot/ITAV_HUMAN ITAV_HUMAN] The alpha-V integrins are receptors for vitronectin, cytotactin, fibronectin, fibrinogen, laminin, matrix metalloproteinase-2, osteopontin, osteomodulin, prothrombin, thrombospondin and vWF. They recognize the sequence R-G-D in a wide array of ligands. 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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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/m1/1m1x_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1m1x ConSurf].
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<div style="clear:both"></div>
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'''CRYSTAL STRUCTURE OF THE EXTRACELLULAR SEGMENT OF INTEGRIN ALPHA VBETA3 BOUND TO MN2+'''
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==See Also==
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*[[Integrin 3D structures|Integrin 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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The structural basis for the divalent cation-dependent binding of heterodimeric alphabeta integrins to their ligands, which contain the prototypical Arg-Gly-Asp sequence, is unknown. Interaction with ligands triggers tertiary and quaternary structural rearrangements in integrins that are needed for cell signaling. Here we report the crystal structure of the extracellular segment of integrin alphaVbeta3 in complex with a cyclic peptide presenting the Arg-Gly-Asp sequence. The ligand binds at the major interface between the alphaV and beta3 subunits and makes extensive contacts with both. Both tertiary and quaternary changes are observed in the presence of ligand. The tertiary rearrangements take place in betaA, the ligand-binding domain of beta3; in the complex, betaA acquires two cations, one of which contacts the ligand Asp directly and the other stabilizes the ligand-binding surface. Ligand binding induces small changes in the orientation of alphaV relative to beta3.
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==About this Structure==
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1M1X is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M1X OCA].
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==Reference==
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Crystal structure of the extracellular segment of integrin alpha Vbeta3 in complex with an Arg-Gly-Asp ligand., Xiong JP, Stehle T, Zhang R, Joachimiak A, Frech M, Goodman SL, Arnaout MA, Science. 2002 Apr 5;296(5565):151-5. Epub 2002 Mar 7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11884718 11884718]
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Protein complex]]
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[[Category: Large Structures]]
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[[Category: Arnaout, M A.]]
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[[Category: Arnaout MA]]
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[[Category: Frech, M.]]
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[[Category: Frech M]]
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[[Category: Goodman, S L.]]
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[[Category: Goodman SL]]
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[[Category: Joachimiak, A.]]
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[[Category: Joachimiak A]]
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[[Category: Stehle, T.]]
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[[Category: Stehle T]]
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[[Category: Xiong, J P.]]
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[[Category: Xiong J-P]]
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[[Category: Zhang, R.]]
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[[Category: Zhang R]]
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[[Category: a-domain]]
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[[Category: admida]]
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[[Category: beta-tail domain]]
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[[Category: cage motif]]
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[[Category: calf domain]]
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[[Category: egf domain]]
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[[Category: genu]]
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[[Category: hybrid domain]]
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[[Category: mida]]
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[[Category: propeller]]
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[[Category: psi domain]]
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[[Category: thigh domain]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:10:17 2008''
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Current revision

CRYSTAL STRUCTURE OF THE EXTRACELLULAR SEGMENT OF INTEGRIN ALPHA VBETA3 BOUND TO MN2+

PDB ID 1m1x

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