1fkm

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{{STRUCTURE_1fkm| PDB=1fkm | SCENE= }}
{{STRUCTURE_1fkm| PDB=1fkm | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE YPT/RAB-GAP DOMAIN OF GYP1P'''
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===CRYSTAL STRUCTURE OF THE YPT/RAB-GAP DOMAIN OF GYP1P===
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==Overview==
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We present the 1.9 A resolution crystal structure of the catalytic domain of Gyp1p, a specific GTPase activating protein (GAP) for Ypt proteins, the yeast homologues of Rab proteins, which are involved in vesicular transport. Gyp1p is a member of a large family of eukaryotic proteins with shared sequence motifs. Previously, no structural information was available for any member of this class of proteins. The GAP domain of Gyp1p was found to be fully alpha-helical. However, the observed fold does not superimpose with other alpha-helical GAPs (e.g. Ras- and Cdc42/Rho-GAP). The conserved and catalytically crucial arginine residue, identified by mutational analysis, is in a comparable position to the arginine finger in the Ras- and Cdc42-GAPs, suggesting that Gyp1p utilizes an arginine finger in the GAP reaction, in analogy to Ras- and Cdc42-GAPs. A model for the interaction between Gyp1p and the Ypt protein satisfying biochemical data is given.
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{{ABSTRACT_PUBMED_11013213}}
==About this Structure==
==About this Structure==
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[[Category: Vesicular trafficking]]
[[Category: Vesicular trafficking]]
[[Category: Ypt/rab protein]]
[[Category: Ypt/rab protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 16:26:19 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 03:24:37 2008''

Revision as of 00:24, 1 July 2008

Image:1fkm.png

Template:STRUCTURE 1fkm

CRYSTAL STRUCTURE OF THE YPT/RAB-GAP DOMAIN OF GYP1P

Template:ABSTRACT PUBMED 11013213

About this Structure

1FKM is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

Crystal structure of the GAP domain of Gyp1p: first insights into interaction with Ypt/Rab proteins., Rak A, Fedorov R, Alexandrov K, Albert S, Goody RS, Gallwitz D, Scheidig AJ, EMBO J. 2000 Oct 2;19(19):5105-13. PMID:11013213

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