Sla2p is associated with the yeast cortical actin cytoskeleton via redundant localization signals.

Sla2p is associated with the yeast cortical actin cytoskeleton via redundant localization signals.
复制标题

Sla2p 通过冗余定位信号与酵母皮质肌动蛋白细胞骨架相关。

DOI:
10.1091/mbc.10.7.2265
复制
发表时间:
1999
影响因子:
3.3
通讯作者:
Drubin,DG
Drubin,DG
中科院分区:
生物学3区
文献类型:
--
作者:
Yang,S;Cope,MJ;Drubin,DG

文献摘要

参考文献

被引文献

相似文献

Sla2p,也称为 End4p 和 Mop2p,是广泛保守的肌动蛋白结合蛋白家族的创始成员,其显着特征是与踝蛋白 C 末端同源的 C 末端区域。这些蛋白质可能在肌动蛋白细胞骨架介导的质膜重塑中发挥作用。 Sla2p 的人类同源物与亨廷顿蛋白结合,亨廷顿蛋白的突变会导致亨廷顿病。在这里,我们通过免疫定位确定 Sla2p 是酵母皮质肌动蛋白细胞骨架的组成部分。缺失分析表明Sla2p包含两个可分离的区域,可以介导与皮质肌动蛋白细胞骨架的关联,并且可以提供Sla2p功能。一种定位信号基于肌动蛋白,而另一种信号独立于丝状肌动蛋白。生化分析表明Sla2p在体内以二聚体形式存在。双杂交分析揭示了由卷曲螺旋结构域介导的两种分子内相互作用。这些相互作用之一似乎是二聚体形成的基础。另一个似乎有助于调节 Sla2p 在细胞质和质膜之间的分布。所提供的数据用于开发 Sla2p 调节和相互作用的模型。
Sla2p, also known as End4p and Mop2p, is the founding member of a widely conserved family of actin-binding proteins, a distinguishing feature of which is a C-terminal region homologous to the C terminus of talin. These proteins may function in actin cytoskeleton-mediated plasma membrane remodeling. A human homologue of Sla2p binds to huntingtin, the protein whose mutation results in Huntington’s disease. Here we establish by immunolocalization that Sla2p is a component of the yeast cortical actin cytoskeleton. Deletion analysis showed that Sla2p contains two separable regions, which can mediate association with the cortical actin cytoskeleton, and which can provide Sla2p function. One localization signal is actin based, whereas the other signal is independent of filamentous actin. Biochemical analysis showed that Sla2p exists as a dimer in vivo. Two-hybrid analysis revealed two intramolecular interactions mediated by coiled-coil domains. One of these interactions appears to underlie dimer formation. The other appears to contribute to the regulation of Sla2p distribution between the cytoplasm and plasma membrane. The data presented are used to develop a model for Sla2p regulation and interactions.
DOI: 10.1091/mbc.8.2.367
发表时间: 1997-02-01
影响因子: 3.3
作者:
Lila, T;Drubin, DG
通讯作者: Drubin, DG
DOI: 10.1038/373261a0
发表时间: 1995-01-19
期刊: NATURE
影响因子: 64.8
作者:
JOHNSON, RP;CRAIG, SW
通讯作者: CRAIG, SW
DOI: 10.1101/gad.7.4.555
发表时间: 1993-04-01
影响因子: 10.5
作者:
DURFEE, T;BECHERER, K;ELLEDGE, SJ
通讯作者: ELLEDGE, SJ
酵母的免疫荧光方法。
DOI: 10.1016/0076-6879(91)94043-c
发表时间: 1991
影响因子: --
作者:
Pringle,JR;Adams,AE;Drubin,DG;Haarer,BK
通讯作者: Haarer,BK
Talin 包含三个肌动蛋白结合位点,每个位点都与纽蛋白结合位点相邻。
DOI: 10.1242/jcs.109.11.2715
发表时间: 1996
影响因子: 4
作者:
Hemmings,L;Rees,DJ;Ohanian,V;Bolton,SJ;Gilmore,AP;Patel,B;Priddle,H;Trevithick,JE;Hynes,RO;Critchley,DR
通讯作者: Critchley,DR