Glut4 palmitoylation at Cys223 plays a critical role in Glut4 membrane trafficking.

Glut4 palmitoylation at Cys223 plays a critical role in Glut4 membrane trafficking.
复制标题

DOI:
10.1016/j.bbrc.2015.03.094
复制
发表时间:
2015-05-08
影响因子:
3.1
通讯作者:
Du, Keyong
Du, Keyong
中科院分区:
生物学4区
文献类型:
--
作者:
Ren, Wenying;Sun, Yingmin;Du, Keyong

文献摘要

参考文献

被引文献

相似文献

最近,我们确定Glut 4作为脂肪细胞中的棕榈酰化蛋白。为了了解Glut 4棕榈酰化在Glut 4膜运输中的作用,这是一个维持全身葡萄糖稳态所必需的过程,我们对Glut 4棕榈酰化进行了表征。我们发现Glut 4在Cys 223处被棕榈酰化,并且Glut 4在Cys 223处的棕榈酰化对于胰岛素依赖性Glut 4膜转位是必需的,因为Glut 4中的Cys 223被丝氨酸残基取代(C223 S Glut 4)降低了Glut 4在脂肪细胞和CHO-IR细胞中膜转位中对胰岛素的响应性。我们已经检查了C223 S Glut 4亚细胞定位,并观察到它不存在于管状囊泡结构中,其中存在胰岛素响应性Glut 4囊泡。总之,我们的研究揭示了一种新的机制,在该机制下,Glut 4棕榈酰化调节Glut 4分选到胰岛素应答囊泡,从而胰岛素依赖性Glut 4膜转位。
Recently, we identified Glut4 as a palmitoylated protein in adipocytes. To understand the role of Glut4 palmitoylation in Glut4 membrane trafficking, a process that is essential for maintenance of whole body glucose homeostasis, we have characterized Glut4 palmitoylation. We found that Glut4 is palmitoylated at Cys223 and Glut4 palmitoylation at Cys223 is essential for insulin dependent Glut4 membrane translocation as substitution of Cys223 with a serine residue in Glut4 (C223S Glut4) diminished Glut4 responsiveness to insulin in membrane translocation in both adipocytes and CHO-IR cells. We have examined C223S Glut4 subcellular localization and observed that it was absence from tubular-vesicle structure, where insulin responsive Glut4 vesicles were presented. Together, our studies uncover a novel mechanism under which Glut4 palmitoylation regulates Glut4 sorting to insulin responsive vesicles, thereby insulin-dependent Glut4 membrane translocation.
癌代谢中的葡萄糖转运蛋白。
DOI: 10.1097/cco.0b013e328356da72
发表时间: 2012-11
影响因子: 3.4
作者:
Adekola K;Rosen ST;Shanmugam M
通讯作者: Shanmugam M
DOI: 10.1146/annurev-physiol-021113-170252
发表时间: 2014
影响因子: 18.2
作者:
Kajimura S;Saito M
通讯作者: Saito M
DOI: 10.1074/jbc.m112.357699
发表时间: 2012-08-03
影响因子: 4.8
作者:
Ren, Wenying;Cheema, Sarwat;Du, Keyong
通讯作者: Du, Keyong
DOI: 10.1128/mcb.00527-13
发表时间: 2013-11-01
影响因子: 5.3
作者:
Ren, Wenying;Sun, Yingmin;Du, Keyong
通讯作者: Du, Keyong
DOI: 10.1126/science.1079817
发表时间: 2003-06-06
期刊: SCIENCE
影响因子: 56.9
作者:
Du, KY;Herzig, S;Montminy, M
通讯作者: Montminy, M