2pfv

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{{STRUCTURE_2pfv| PDB=2pfv | SCENE= }}
{{STRUCTURE_2pfv| PDB=2pfv | SCENE= }}
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'''S. cerevisiae Exo70 with additional residues to 2.1 Angrstrom resolution'''
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===S. cerevisiae Exo70 with additional residues to 2.1 Angrstrom resolution===
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==Overview==
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The exocyst is a eukaryotic tethering complex necessary for the fusion of exocytic vesicles with the plasma membrane. Its function in vivo is tightly regulated by interactions with multiple small GTPases. Exo70, one of the eight subunits of the exocyst, is important for the localization of the exocyst to the plasma membrane. It interacts with TC10 and Rho3 GTPases in mammals and yeast, respectively, and has been shown recently to bind to the actin-polymerization complex Arp2/3. Here, we present the crystal structure of Mus musculus Exo70 at 2.25 A resolution. Exo70 is composed of alpha-helices in a series of right-handed helix-turn-helix motifs organized into a long rod of length 170 A and width 35 A. Although the alpha-helical organization of this molecule is similar to that in Saccharomyces cerevisiae Exo70, major structural differences are observed on the surface of the molecule, at the domain boundaries, and in various loop structures. In particular, the C-terminal domain of M. musculus Exo70 adopts a new orientation relative to the N-terminal half not seen in S. cerevisiae Exo70 structures. Given the low level of sequence conservation within Exo70, this structure provides new insights into our understanding of many species-specific functions of the exocyst.
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{{ABSTRACT_PUBMED_17583731}}
==About this Structure==
==About this Structure==
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[[Category: Endocytosis/exocytosis complex]]
[[Category: Endocytosis/exocytosis complex]]
[[Category: Helix-turn-helix]]
[[Category: Helix-turn-helix]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 13:01:48 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 19:26:59 2008''

Revision as of 16:27, 28 July 2008

Image:2pfv.png

Template:STRUCTURE 2pfv

S. cerevisiae Exo70 with additional residues to 2.1 Angrstrom resolution

Template:ABSTRACT PUBMED 17583731

About this Structure

2PFV is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

The crystal structure of mouse Exo70 reveals unique features of the mammalian exocyst., Moore BA, Robinson HH, Xu Z, J Mol Biol. 2007 Aug 10;371(2):410-21. Epub 2007 May 22. PMID:17583731

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