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2gy5

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{{STRUCTURE_2gy5| PDB=2gy5 | SCENE= }}
{{STRUCTURE_2gy5| PDB=2gy5 | SCENE= }}
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'''Tie2 Ligand-Binding Domain Crystal Structure'''
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===Tie2 Ligand-Binding Domain Crystal Structure===
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==Overview==
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The Tie receptor tyrosine kinases and their angiopoietin (Ang) ligands play central roles in developmental and tumor-induced angiogenesis. Here we present the crystal structures of the Tie2 ligand-binding region alone and in complex with Ang2. In contrast to prediction, Tie2 contains not two but three immunoglobulin (Ig) domains, which fold together with the three epidermal growth factor domains into a compact, arrowhead-shaped structure. Ang2 binds at the tip of the arrowhead utilizing a lock-and-key mode of ligand recognition-unique for a receptor kinase-where two complementary surfaces interact with each other with no domain rearrangements and little conformational change in either molecule. Ang2-Tie2 recognition is similar to antibody-protein antigen recognition, including the location of the ligand-binding site within the Ig fold. Analysis of the structures and structure-based mutagenesis provide insight into the mechanism of receptor activation and support the hypothesis that all angiopoietins interact with Tie2 in a structurally similar manner.
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==About this Structure==
==About this Structure==
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[[Category: Nikolov, D B.]]
[[Category: Nikolov, D B.]]
[[Category: Ligand-binding domain]]
[[Category: Ligand-binding domain]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 16:59:09 2008''

Revision as of 13:59, 28 July 2008

Image:2gy5.png

Template:STRUCTURE 2gy5

Tie2 Ligand-Binding Domain Crystal Structure

Template:ABSTRACT PUBMED 16732286

About this Structure

2GY5 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Crystal structures of the Tie2 receptor ectodomain and the angiopoietin-2-Tie2 complex., Barton WA, Tzvetkova-Robev D, Miranda EP, Kolev MV, Rajashankar KR, Himanen JP, Nikolov DB, Nat Struct Mol Biol. 2006 Jun;13(6):524-32. Epub 2006 May 28. PMID:16732286

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