Molecular mechanisms of PLD function in membrane traffic

被引：110

作者：

Roth, Michael G. ^{[1
]}

机构：

[1] Univ Texas SW Med Ctr Dallas, Dept Biochem, Dallas, TX 75390 USA

来源：

TRAFFIC | 2008年 / 9卷 / 08期

关键词：

DAG; membrane fusion; membrane traffic; PA; phosphatidylinositides; PLD;

D O I：

10.1111/j.1600-0854.2008.00742.x

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

The two mammalian phosphatidylcholine (PC)-selective phospholipase D (PLD) enzymes remove the choline head group from PC to produce phosphatidic acid (PA). PA stimulates phosphatidylinositol(4)phosphate 5-kinases, can function as a binding site for membrane proteins, is required for certain membrane fusion or fission events and is an important precursor for the production of diacylglycerol (DAG). Both PA and DAG are lipids that favor negatively curved membranes rather than planar bilayers and can reduce the energetic barrier to membrane fission and fusion. Recent data provide a mechanistic explanation for the role PLDs play in some aspects of membrane traffic and provide an explanation for why some membrane fusion reactions require PA and some do not. PLDs also act as guanosine triphosphatase-activating proteins for dynamin and may participate with dynamin in the process of vesicle fission.

引用

页码：1233 / 1239

页数：7

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