Ezrin interacts with the scaffold protein IQGAP1 and affects its cortical localization.

Ezrin interacts with the scaffold protein IQGAP1 and affects its cortical localization.
复制标题

Ezrin 与支架蛋白 IQGAP1 相互作用并影响其皮质定位

DOI:
10.1016/j.bbamcr.2014.12.026
复制
发表时间:
2015
期刊:
Biochimica et biophysica acta
影响因子:
--
通讯作者:
Nammalwar
Nammalwar
中科院分区:
--
文献类型:
--
作者:
Nammalwar

文献摘要

参考文献

相似文献

皮质细胞骨架是决定细胞形状、调节细胞迁移以及细胞膜进出的重要亚细胞结构。已经鉴定了皮质细胞骨架的许多组分,包括结构和支架蛋白、膜-细胞骨架连接蛋白和信号中间体。我们在这里描述了一个协会的膜-F-肌动蛋白连接蛋白埃兹蛋白与支架蛋白IQGAP 1,作为一个枢纽集中不同的信号复合物。埃兹蛋白和IQGAP 1都以Ca 2+依赖性方式与EF手蛋白S100 P结合,并且可以通过免疫沉淀分离由Ca 2+结合的S100 P、IQGAP 1和埃兹蛋白组成的复合物。Ezrin和IQGAP 1也在不存在Ca 2+的情况下相互作用,因此独立于S100 P。直接ezrin-IQGAP 1相互作用可以显示与纯化的蛋白质。它分别通过ezrin的N-末端FERM结构域和IQGAP 1的IQ结构域介导。Ezrin和IQGAP 1共定位于人上皮细胞的膜下细胞骨架和细胞突起中,并且Ezrin的敲低降低了IQGAP 1的皮质定位。因此,埃兹蛋白似乎参与招募IQGAP 1到细胞皮质,从而在膜-F-肌动蛋白接触和可由IQGAP 1组装的肌动蛋白调节剂之间建立密切联系。这篇文章是题为:第13届欧洲钙研讨会特刊的一部分。
The cortical cytoskeleton constitutes an important subcellular structure that determines cell shape and regulates cell migration as well as membrane traffic to and from the plasma membrane. Many components of the cortical cytoskeleton have been identified including structural and scaffolding proteins, membrane–cytoskeleton linker proteins and signaling intermediates. We describe here an association of the membrane-F-actin linker protein ezrin with the scaffolding protein IQGAP1 that serves as a hub for concentrating different signaling complexes. Both, ezrin and IQGAP1 bind in a Ca2 +-dependent manner to the EF hand protein S100P and complexes consisting of Ca2 +-bound S100P, IQGAP1 and ezrin can be isolated by immunoprecipitation. Ezrin and IQGAP1 also interact in the absence of Ca2 +, thus independent of S100P. Direct ezrin–IQGAP1 interaction can be shown with the purified proteins. It is mediated via the N-terminal FERM domain of ezrin and the IQ domain of IQGAP1, respectively. Ezrin and IQGAP1 colocalize in the submembraneous cytoskeleton and in cellular protrusions of human epithelial cells and knockdown of ezrin reduces the cortical localization of IQGAP1. Thus, ezrin appears to participate in recruiting IQGAP1 to the cell cortex thereby establishing a close connection between membrane-F-actin contacts and actin regulators that can be assembled by IQGAP1. This article is part of a Special Issue entitled: 13th European Symposium on Calcium.
DOI: 10.1091/mbc.e02-09-0553
发表时间: 2003-06-01
影响因子: 3.3
作者:
Koltzscher, M;Neumann, C;Gerke, V
通讯作者: Gerke, V
DOI: 10.1074/jbc.m113.530659
发表时间: 2014-04-04
影响因子: 4.8
作者:
Braunger, Julia A.;Brueckner, Bastian R.;Steinem, Claudia
通讯作者: Steinem, Claudia
IQGAP1 的保守序列重复介导与 Ezrin 的结合。
DOI: 10.1021/pr400787p
发表时间: 2014
影响因子: 4.4
作者:
Liu,Jing;Guidry,JesseJ;Worthylake,DavidK
通讯作者: Worthylake,DavidK
ezrin,radixin和Moesin:膜 - 皮质相互作用和信号传导的关键调节剂。
DOI: 10.1016/j.ceb.2011.04.011
发表时间: 2011-08
影响因子: 7.5
作者:
Neisch, Amanda L.;Fehon, Richard G.
通讯作者: Fehon, Richard G.
DOI: 10.1016/0014-5793(95)01270-1
发表时间: 1995-12-04
期刊: FEBS LETTERS
影响因子: 3.5
作者:
NIGGLI, V;ANDREOLI, C;MANGEAT, P
通讯作者: MANGEAT, P