期刊
CELL METABOLISM
卷 2, 期 3, 页码 179-189出版社
CELL PRESS
DOI: 10.1016/j.cmet.2005.08.007
关键词
-
资金
- Medical Research Council [MR/J003417/1, G0300415, G9225018, G9225018(63350)] Funding Source: Medline
- MRC [G9225018, G0300415] Funding Source: UKRI
- Medical Research Council [G0300415, G9225018] Funding Source: researchfish
A hypothesis that accounts for most of the available literature on insulin-stimulated GLUT4 translocation is that insulin action controls the access of GLUT4 vesicles to a constitutively active plasma-membrane fusion process. However, using an in vitro fusion assay, we show here that fusion is not constitutively active. Instead, the rate of fusion activity is stimulated 8-fold by insulin. Both the magnitude and time course of stimulated in vitro fusion recapitulate the cellular insulin response. Fusion is cell cytoplasm and SNARE dependent but does not require cell cytoskeleton. Furthermore, insulin activation of the plasma-membrane fraction of the fusion reaction is the essential step in regulation. Akt from the cytoplasm fraction is required for fusion. However, the participation of Akt in the stimulation of in vitro fusion is dependent on its in vitro recruitment onto the insulin-activated plasma membrane.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据