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1aua

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[[Image:1aua.gif|left|200px]]
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{{STRUCTURE_1aua| PDB=1aua | SCENE= }}
{{STRUCTURE_1aua| PDB=1aua | SCENE= }}
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'''PHOSPHATIDYLINOSITOL TRANSFER PROTEIN SEC14P FROM SACCHAROMYCES CEREVISIAE'''
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===PHOSPHATIDYLINOSITOL TRANSFER PROTEIN SEC14P FROM SACCHAROMYCES CEREVISIAE===
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==Overview==
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The yeast phosphatidylinositol-transfer protein (Sec14) catalyses exchange of phosphatidylinositol and phosphatidylcholine between membrane bilayers in vitro. In vivo, Sec14 activity is essential for vesicle budding from the Golgi complex. Here we report a three-dimensional structure for Sec14 at 2.5 A resolution. Sec14 consists of twelve alpha-helices, six beta-strands, eight 3(10)-helices and has two distinct domains. The carboxy-terminal domain forms a hydrophobic pocket which, in the crystal structure, is occupied by two molecules of n-octyl-beta-D-glucopyranoside and represents the phospholipid-binding domain. This pocket is reinforced by a string motif whose disruption in a sec14 temperature-sensitive mutant results in destabilization of the phospholipid-binding domain. Finally, we have identified an unusual surface helix that may play a critical role in driving Sec14-mediated phospholipid exchange. From this structure, we derive the first molecular clues into how a phosphatidylinositol-transfer protein functions.
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(as it appears on PubMed at http://www.pubmed.gov), where 9461221 is the PubMed ID number.
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{{ABSTRACT_PUBMED_9461221}}
==About this Structure==
==About this Structure==
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[[Category: Phospholipid exchange]]
[[Category: Phospholipid exchange]]
[[Category: Phospholipid-binding protein]]
[[Category: Phospholipid-binding protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 10:41:59 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 17:36:31 2008''

Revision as of 14:36, 30 June 2008

Image:1aua.png

Template:STRUCTURE 1aua

PHOSPHATIDYLINOSITOL TRANSFER PROTEIN SEC14P FROM SACCHAROMYCES CEREVISIAE

Template:ABSTRACT PUBMED 9461221

About this Structure

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

Reference

Crystal structure of the Saccharomyces cerevisiae phosphatidylinositol-transfer protein., Sha B, Phillips SE, Bankaitis VA, Luo M, Nature. 1998 Jan 29;391(6666):506-10. PMID:9461221

Page seeded by OCA on Mon Jun 30 17:36:31 2008

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