1m1x

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[[Image:1m1x.jpg|left|200px]]
[[Image:1m1x.jpg|left|200px]]
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{{Structure
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<!--
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|PDB= 1m1x |SIZE=350|CAPTION= <scene name='initialview01'>1m1x</scene>, resolution 3.3&Aring;
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The line below this paragraph, containing "STRUCTURE_1m1x", creates the "Structure Box" on the page.
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|SITE=
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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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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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY=
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|GENE=
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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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{{STRUCTURE_1m1x| PDB=1m1x | SCENE= }}
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|RELATEDENTRY=[[1jv2|1JV2]], [[1m1u|1M1U]]
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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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}}
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'''CRYSTAL STRUCTURE OF THE EXTRACELLULAR SEGMENT OF INTEGRIN ALPHA VBETA3 BOUND TO MN2+'''
'''CRYSTAL STRUCTURE OF THE EXTRACELLULAR SEGMENT OF INTEGRIN ALPHA VBETA3 BOUND TO MN2+'''
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[[Category: Xiong, J P.]]
[[Category: Xiong, J P.]]
[[Category: Zhang, R.]]
[[Category: Zhang, R.]]
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[[Category: a-domain]]
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[[Category: A-domain]]
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[[Category: admida]]
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[[Category: Admida]]
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[[Category: beta-tail domain]]
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[[Category: Beta-tail domain]]
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[[Category: cage motif]]
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[[Category: Cage motif]]
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[[Category: calf domain]]
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[[Category: Calf domain]]
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[[Category: egf domain]]
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[[Category: Egf domain]]
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[[Category: genu]]
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[[Category: Genu]]
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[[Category: hybrid domain]]
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[[Category: Hybrid domain]]
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[[Category: mida]]
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[[Category: Mida]]
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[[Category: propeller]]
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[[Category: Propeller]]
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[[Category: psi domain]]
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[[Category: Psi domain]]
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[[Category: thigh domain]]
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[[Category: Thigh domain]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 00:32:06 2008''
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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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Revision as of 21:32, 2 May 2008

Image:1m1x.jpg

Template:STRUCTURE 1m1x

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


Overview

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.

About this Structure

1M1X is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

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:11884718 Page seeded by OCA on Sat May 3 00:32:06 2008

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