1kzg

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{{STRUCTURE_1kzg| PDB=1kzg | SCENE= }}
{{STRUCTURE_1kzg| PDB=1kzg | SCENE= }}
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'''DbsCdc42(Y889F)'''
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===DbsCdc42(Y889F)===
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==Overview==
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Dbl-related oncoproteins are guanine nucleotide exchange factors (GEFs) specific for Rho guanosine triphosphatases (GTPases) and invariably possess tandem Dbl (DH) and pleckstrin homology (PH) domains. While it is known that the DH domain is the principal catalytic subunit, recent biochemical data indicate that for some Dbl-family proteins, such as Dbs and Trio, PH domains may cooperate with their associated DH domains in promoting guanine nucleotide exchange of Rho GTPases. In order to gain an understanding of the involvement of these PH domains in guanine nucleotide exchange, we have determined the crystal structure of a DH/PH fragment from Dbs in complex with Cdc42. The complex features the PH domain in a unique conformation distinct from the PH domains in the related structures of Sos1 and Tiam1.Rac1. Consequently, the Dbs PH domain participates with the DH domain in binding Cdc42, primarily through a set of interactions involving switch 2 of the GTPase. Comparative sequence analysis suggests that a subset of Dbl-family proteins will utilize their PH domains similarly to Dbs.
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(as it appears on PubMed at http://www.pubmed.gov), where 11889037 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11889037}}
==About this Structure==
==About this Structure==
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[[Category: Guanine nucleotide exchange factor]]
[[Category: Guanine nucleotide exchange factor]]
[[Category: Small g-protein]]
[[Category: Small g-protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 23:21:44 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 11:21:32 2008''

Revision as of 08:21, 2 July 2008

Image:1kzg.png

Template:STRUCTURE 1kzg

DbsCdc42(Y889F)

Template:ABSTRACT PUBMED 11889037

About this Structure

1KZG is a Protein complex structure of sequences from Homo sapiens and Mus musculus. Full crystallographic information is available from OCA.

Reference

A crystallographic view of interactions between Dbs and Cdc42: PH domain-assisted guanine nucleotide exchange., Rossman KL, Worthylake DK, Snyder JT, Siderovski DP, Campbell SL, Sondek J, EMBO J. 2002 Mar 15;21(6):1315-26. PMID:11889037

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