2x11

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[[Image:2x11.png|left|200px]]
 
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{{STRUCTURE_2x11| PDB=2x11 | SCENE= }}
{{STRUCTURE_2x11| PDB=2x11 | SCENE= }}
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===CRYSTAL STRUCTURE OF THE COMPLETE EPHA2 ECTODOMAIN IN COMPLEX WITH EPHRIN A5 RECEPTOR BINDING DOMAIN===
===CRYSTAL STRUCTURE OF THE COMPLETE EPHA2 ECTODOMAIN IN COMPLEX WITH EPHRIN A5 RECEPTOR BINDING DOMAIN===
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{{ABSTRACT_PUBMED_20228801}}
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==Function==
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[[http://www.uniprot.org/uniprot/EFNA5_HUMAN EFNA5_HUMAN]] Cell surface GPI-bound ligand for Eph receptors, a family of receptor tyrosine kinases which are crucial for migration, repulsion and adhesion during neuronal, vascular and epithelial development. Binds promiscuously Eph receptors residing on adjacent cells, leading to contact-dependent bidirectional signaling into neighboring cells. The signaling pathway downstream of the receptor is referred to as forward signaling while the signaling pathway downstream of the ephrin ligand is referred to as reverse signaling. Induces compartmentalized signaling within a caveolae-like membrane microdomain when bound to the extracellular domain of its cognate receptor. This signaling event requires the activity of the Fyn tyrosine kinase. Activates the EPHA3 receptor to regulate cell-cell adhesion and cytoskeletal organization. With the receptor EPHA2 may regulate lens fiber cells shape and interactions and be important for lens transparency maintenance. May function actively to stimulate axon fasciculation. The interaction of EFNA5 with EPHA5 also mediates communication between pancreatic islet cells to regulate glucose-stimulated insulin secretion. Cognate/functional ligand for EPHA7, their interaction regulates brain development modulating cell-cell adhesion and repulsion.<ref>PMID:10601038</ref><ref>PMID:11870224</ref>
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{{ABSTRACT_PUBMED_20228801}}
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==About this Structure==
==About this Structure==
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==Reference==
==Reference==
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<ref group="xtra">PMID:020228801</ref><references group="xtra"/>
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<ref group="xtra">PMID:020228801</ref><references group="xtra"/><references/>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Receptor protein-tyrosine kinase]]
[[Category: Receptor protein-tyrosine kinase]]

Revision as of 22:45, 24 March 2013

Template:STRUCTURE 2x11

Contents

CRYSTAL STRUCTURE OF THE COMPLETE EPHA2 ECTODOMAIN IN COMPLEX WITH EPHRIN A5 RECEPTOR BINDING DOMAIN

Template:ABSTRACT PUBMED 20228801

Function

[EFNA5_HUMAN] Cell surface GPI-bound ligand for Eph receptors, a family of receptor tyrosine kinases which are crucial for migration, repulsion and adhesion during neuronal, vascular and epithelial development. Binds promiscuously Eph receptors residing on adjacent cells, leading to contact-dependent bidirectional signaling into neighboring cells. The signaling pathway downstream of the receptor is referred to as forward signaling while the signaling pathway downstream of the ephrin ligand is referred to as reverse signaling. Induces compartmentalized signaling within a caveolae-like membrane microdomain when bound to the extracellular domain of its cognate receptor. This signaling event requires the activity of the Fyn tyrosine kinase. Activates the EPHA3 receptor to regulate cell-cell adhesion and cytoskeletal organization. With the receptor EPHA2 may regulate lens fiber cells shape and interactions and be important for lens transparency maintenance. May function actively to stimulate axon fasciculation. The interaction of EFNA5 with EPHA5 also mediates communication between pancreatic islet cells to regulate glucose-stimulated insulin secretion. Cognate/functional ligand for EPHA7, their interaction regulates brain development modulating cell-cell adhesion and repulsion.[1][2]

About this Structure

2x11 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

  • Seiradake E, Harlos K, Sutton G, Aricescu AR, Jones EY. An extracellular steric seeding mechanism for Eph-ephrin signaling platform assembly. Nat Struct Mol Biol. 2010 Apr;17(4):398-402. Epub 2010 Mar 14. PMID:20228801 doi:10.1038/nsmb.1782
  1. ↑ Davy A, Gale NW, Murray EW, Klinghoffer RA, Soriano P, Feuerstein C, Robbins SM. Compartmentalized signaling by GPI-anchored ephrin-A5 requires the Fyn tyrosine kinase to regulate cellular adhesion. Genes Dev. 1999 Dec 1;13(23):3125-35. PMID:10601038
  2. ↑ Lawrenson ID, Wimmer-Kleikamp SH, Lock P, Schoenwaelder SM, Down M, Boyd AW, Alewood PF, Lackmann M. Ephrin-A5 induces rounding, blebbing and de-adhesion of EphA3-expressing 293T and melanoma cells by CrkII and Rho-mediated signalling. J Cell Sci. 2002 Mar 1;115(Pt 5):1059-72. PMID:11870224

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