PC-TP/StARD2: Of membranes and metabolism.
PC-TP/StARD2: Of membranes and metabolism.
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DOI:
10.1016/j.tem.2010.02.001
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发表时间:
2010-07
影响因子:
10.9
通讯作者:
Cohen, David E.
中科院分区:
文献类型:
--
作者:
Kang, Hye Won;Wei, Jie;Cohen, David E.
Phosphatidylcholine transfer protein (PC-TP, a.k.a. StARD2) binds phosphatidylcholines and catalyzes their intermembrane transfer and exchange in vitro. The structure of PC-TP comprises a hydrophobic pocket and a well-defined head-group binding site, and its gene expression is regulated by peroxisome proliferator activated receptor α. Recent studies have revealed key regulatory roles for PC-TP in lipid and glucose metabolism. Notably, Pctp−/− mice are sensitized to insulin action and exhibit more efficient brown fat-mediated thermogenesis. PC-TP appears to limit access of fatty acids to mitochondria by stimulating the activity of thioesterase superfamily member 2, a newly characterized long-chain fatty acyl-CoA thioesterase. Because PC-TP discriminates among phosphatidylcholines within lipid bilayers, it may function as a sensor that links metabolic regulation to membrane composition.
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