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1wyx

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{{STRUCTURE_1wyx| PDB=1wyx | SCENE= }}
{{STRUCTURE_1wyx| PDB=1wyx | SCENE= }}
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'''The Crystal Structure of the p130Cas SH3 Domain at 1.1 A Resolution'''
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===The Crystal Structure of the p130Cas SH3 Domain at 1.1 A Resolution===
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==Overview==
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The Crk-associated tyrosine kinase substrate p130cas (CAS) is a docking protein containing an SH3 domain near its N terminus, followed by a short proline-rich segment, a large central substrate domain composed of 15 repeats of the four amino acid sequence YxxP, a serine-rich region and a carboxy-terminal domain, which possesses consensus binding sites for the SH2 and SH3 domains of Src (YDYV and RPLPSPP, respectively). The SH3 domain of CAS mediates its interaction with several proteins involved in signaling pathways such as focal adhesion kinase (FAK), tyrosine phosphatases PTP1B and PTP-PEST, and the guanine nucleotide exchange factor C3G. As a homolog of the corresponding Src docking domain, the CAS SH3 domain binds to proline-rich sequences (PxxP) of its interacting partners that can adopt a polyproline type II helix. We have determined a high-resolution X-ray structure of the recombinant human CAS SH3 domain. The domain, residues 1-69, crystallized in two related space groups, P2(1) and C222(1), that provided diffraction data to 1.1 A and 2.1 A, respectively. The crystal structure shows, in addition to the conserved SH3 domain architecture, the way in which the CAS characteristic amino acids form an atypically charged ligand-binding surface. This arrangement provides a rationale for the unusual ligand recognition motif exhibited by the CAS SH3 domain. The structure enables modelling of the docking interactions to its ligands, for example from focal adhesion kinase, and supports structure-based drug design of inhibitors of the CAS-FAK interaction.
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(as it appears on PubMed at http://www.pubmed.gov), where 15784259 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15784259}}
==About this Structure==
==About this Structure==
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[[Category: Wisniewska, M.]]
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[[Category: Beta sheet]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 04:40:27 2008''

Revision as of 01:40, 28 July 2008

Image:1wyx.png

Template:STRUCTURE 1wyx

The Crystal Structure of the p130Cas SH3 Domain at 1.1 A Resolution

Template:ABSTRACT PUBMED 15784259

About this Structure

1WYX is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

The 1.1 A resolution crystal structure of the p130cas SH3 domain and ramifications for ligand selectivity., Wisniewska M, Bossenmaier B, Georges G, Hesse F, Dangl M, Kunkele KP, Ioannidis I, Huber R, Engh RA, J Mol Biol. 2005 Apr 15;347(5):1005-14. PMID:15784259

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