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1r4a

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{{STRUCTURE_1r4a| PDB=1r4a | SCENE= }}
{{STRUCTURE_1r4a| PDB=1r4a | SCENE= }}
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'''Crystal Structure of GTP-bound ADP-ribosylation Factor Like Protein 1 (Arl1) and GRIP Domain of Golgin245 COMPLEX'''
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===Crystal Structure of GTP-bound ADP-ribosylation Factor Like Protein 1 (Arl1) and GRIP Domain of Golgin245 COMPLEX===
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==Overview==
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Recruitment of the GRIP domain golgins to the trans-Golgi network is mediated by Arl1, a member of the ARF/Arl small GTPase family, through interaction between their GRIP domains and Arl1-GTP. The crystal structure of Arl1-GTP in complex with the GRIP domain of golgin-245 shows that Arl1-GTP interacts with the GRIP domain predominantly in a hydrophobic manner, with the switch II region conferring the main recognition surface. The involvement of the switch and interswitch regions in the interaction between Arl1-GTP and GRIP accounts for the specificity of GRIP domain for Arl1-GTP. Mutations that abolished the Arl1-mediated Golgi localization of GRIP domain golgins have been mapped on the interface between Arl1-GTP and GRIP. Notably, the GRIP domain forms a homodimer in which each subunit interacts separately with one Arl1-GTP. Mutations disrupting the GRIP domain dimerization also abrogated its Golgi targeting, suggesting that the dimeric form of GRIP domain is a functional unit.
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{{ABSTRACT_PUBMED_14718928}}
==About this Structure==
==About this Structure==
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[[Category: Ras-like g protein structure]]
[[Category: Ras-like g protein structure]]
[[Category: Three-helix grip domain]]
[[Category: Three-helix grip domain]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 07:03:25 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 17:09:11 2008''

Revision as of 14:09, 28 July 2008

Template:STRUCTURE 1r4a

Crystal Structure of GTP-bound ADP-ribosylation Factor Like Protein 1 (Arl1) and GRIP Domain of Golgin245 COMPLEX

Template:ABSTRACT PUBMED 14718928

About this Structure

1R4A is a Protein complex structure of sequences from Homo sapiens and Rattus norvegicus. Full crystallographic information is available from OCA.

Reference

Structural basis for recruitment of GRIP domain golgin-245 by small GTPase Arl1., Wu M, Lu L, Hong W, Song H, Nat Struct Mol Biol. 2004 Jan;11(1):86-94. Epub 2003 Dec 29. PMID:14718928

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