CtBP1/BARS is an activator of phospholipase D1 necessary for agonist-induced macropinocytosis.
CtBP1/BARS is an activator of phospholipase D1 necessary for agonist-induced macropinocytosis.
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DOI:
10.1038/emboj.2009.78
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发表时间:
2009-05-06
期刊:
影响因子:
11.4
通讯作者:
Nakamura, Shun-ichi
中科院分区:
文献类型:
--
作者:
Haga, Yuki;Miwa, Noriko;Jahangeer, Saleem;Okada, Taro;Nakamura, Shun-ichi
Vesicular trafficking such as macropinocytosis is a dynamic process that requires coordinated interactions between specialized proteins and lipids. A recent report suggests the involvement of CtBP1/BARS in epidermal growth factor (EGF)-induced macropinocytosis. Detailed mechanisms as to how lipid remodelling is regulated during macropinocytosis are still undefined. Here, we show that CtBP1/BARS is a physiological activator of PLD1 required in agonist-induced macropinocytosis. EGF-induced macropinocytosis was specifically blocked by 1-butanol but not by 2-butanol. In addition, stimulation of cells by serum or EGF resulted in the association of CtBP1/BARS with PLD1. Finally, CtBP1/BARS activated PLD1 in a synergistic manner with other PLD activators, including ADP-ribosylation factors as demonstrated by in vitro and intact cell systems. The present results shed light on the molecular basis of how the ‘fission protein' CtBP1/BARS controls vesicular trafficking events including macropinocytosis.
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影响因子:
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DOI:
10.1073/pnas.0830998100
发表时间:
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影响因子:
11.1
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通讯作者:
Frisch, SM