2iwr: Difference between revisions

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[[Image:2iwr.gif|left|200px]]
{{Seed}}
[[Image:2iwr.png|left|200px]]


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{{STRUCTURE_2iwr|  PDB=2iwr  |  SCENE=  }}  
{{STRUCTURE_2iwr|  PDB=2iwr  |  SCENE=  }}  


'''GTPASE LIKE DOMAIN OF CENTAURIN GAMMA 1 (HUMAN)'''
===GTPASE LIKE DOMAIN OF CENTAURIN GAMMA 1 (HUMAN)===




==Overview==
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Centaurins are a family of proteins that contain GTPase-activating protein domains, with the gamma family members containing in addition a GTPase-like domain. Centaurins reside mainly in the nucleus and are known to activate phosphoinositide 3-kinase, a key regulator of cell proliferation, motility and vesicular trafficking. In the present study, using X-ray structural analysis, enzymatic assays and nucleotide-binding studies, we show that, for CENTG1 (centaurin gamma-1) the GTPase-like domain has broader trinucleotide specificity. Alterations within the G4 motif of CENTG1 from the highly conserved NKXD found in typical GTPases to TQDR result in the loss of specificity, a lower affinity for the nucleotides and higher turnover rates. These results indicate that the centaurins could be more accurately classified as NTPases and point to alternative mechanisms of cell signalling control.
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{{ABSTRACT_PUBMED_17037982}}


==About this Structure==
==About this Structure==
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[[Category: Zinc]]
[[Category: Zinc]]
[[Category: Zinc-finger]]
[[Category: Zinc-finger]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 08:00:02 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 14:52:36 2008''

Revision as of 11:52, 28 July 2008

File:2iwr.png

Template:STRUCTURE 2iwr

GTPASE LIKE DOMAIN OF CENTAURIN GAMMA 1 (HUMAN)

Template:ABSTRACT PUBMED 17037982

About this Structure

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

Reference

The centaurin gamma-1 GTPase-like domain functions as an NTPase., Soundararajan M, Yang X, Elkins JM, Sobott F, Doyle DA, Biochem J. 2007 Feb 1;401(3):679-88. PMID:17037982

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