1l5g

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{{STRUCTURE_1l5g| PDB=1l5g | SCENE= }}
{{STRUCTURE_1l5g| PDB=1l5g | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE EXTRACELLULAR SEGMENT OF INTEGRIN AVB3 IN COMPLEX WITH AN ARG-GLY-ASP LIGAND'''
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===CRYSTAL STRUCTURE OF THE EXTRACELLULAR SEGMENT OF INTEGRIN AVB3 IN COMPLEX WITH AN ARG-GLY-ASP LIGAND===
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==Overview==
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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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(as it appears on PubMed at http://www.pubmed.gov), where 11884718 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11884718}}
==About this Structure==
==About this Structure==
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[[Category: Rgd ligand]]
[[Category: Rgd ligand]]
[[Category: Thigh domain]]
[[Category: Thigh domain]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 23:33:34 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 11:44:42 2008''

Revision as of 08:44, 2 July 2008

Image:1l5g.png

Template:STRUCTURE 1l5g

CRYSTAL STRUCTURE OF THE EXTRACELLULAR SEGMENT OF INTEGRIN AVB3 IN COMPLEX WITH AN ARG-GLY-ASP LIGAND

Template:ABSTRACT PUBMED 11884718

About this Structure

1L5G 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

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