LIM Protein Ajuba associates with the RPA complex through direct cell cycle-dependent interaction with the RPA70 subunit.

LIM Protein Ajuba associates with the RPA complex through direct cell cycle-dependent interaction with the RPA70 subunit.
复制标题

DOI:
10.1038/s41598-018-27919-8
复制
发表时间:
2018-06-22
期刊:
影响因子:
4.6
通讯作者:
Loayza D
Loayza D
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Fowler S;Maguin P;Kalan S;Loayza D

文献摘要

参考文献

相似文献

DNA 损伤反应途径对于基因组稳定性和细胞存活至关重要。具体来说,ATR 激酶由 DNA 复制应激激活。这种激活的一个早期事件是 RPA 的募集和磷酸化,RPA 是一种单链 DNA 结合复合物,由三个亚基 RPA70、RPA32 和 RPA14 组成。我们之前已经证明 LIM 蛋白 Ajuba 与 RPA 相关,并且 Ajuba 的消耗会导致 ATR 的有效激活。在这项研究中,我们提供的证据表明,Ajuba-RPA 相互作用是通过与 RPA70 的直接蛋白质接触而发生的,并且它们的关联是细胞周期调节的,并且在 DNA 复制应激时会减少。我们提出了一个模型,其中 Ajuba 通过直接与 RPA70 相互作用来负调节 ATR 通路,从而防止不适当的 ATR 激活。我们的结果为进一步了解细胞转化背景下人类细胞 ATR 调节机制提供了一个框架。
DNA damage response pathways are essential for genome stability and cell survival. Specifically, the ATR kinase is activated by DNA replication stress. An early event in this activation is the recruitment and phosphorylation of RPA, a single stranded DNA binding complex composed of three subunits, RPA70, RPA32 and RPA14. We have previously shown that the LIM protein Ajuba associates with RPA, and that depletion of Ajuba leads to potent activation of ATR. In this study, we provide evidence that the Ajuba-RPA interaction occurs through direct protein contact with RPA70, and that their association is cell cycle-regulated and is reduced upon DNA replication stress. We propose a model in which Ajuba negatively regulates the ATR pathway by directly interacting with RPA70, thereby preventing inappropriate ATR activation. Our results provide a framework to further our understanding of the mechanism of ATR regulation in human cells in the context of cellular transformation.
DOI: 10.1016/j.molcel.2011.06.019
发表时间: 2011-07-22
期刊: Molecular cell
影响因子: 16
作者:
Liu S;Shiotani B;Lahiri M;Maréchal A;Tse A;Leung CC;Glover JN;Yang XH;Zou L
通讯作者: Zou L
DOI: 10.1016/j.tibs.2010.09.005
发表时间: 2011-03
影响因子: 13.8
作者:
Flynn, Rachel Litman;Zou, Lee
通讯作者: Zou, Lee
DOI: 10.1128/mcb.01079-08
发表时间: 2008-12-15
影响因子: 5.3
作者:
Xu, Xin;Vaithiyalingam, Sivaraja;Cortez, David
通讯作者: Cortez, David
DOI: 10.1074/jbc.m112.407825
发表时间: 2012-10-19
影响因子: 4.8
作者:
Lindsey-Boltz, Laura A.;Reardon, Joyce T.;Sancar, Aziz
通讯作者: Sancar, Aziz
DOI: 10.1016/j.molcel.2010.09.019
发表时间: 2010-10-22
期刊: Molecular cell
影响因子: 16
作者:
Ciccia A;Elledge SJ
通讯作者: Elledge SJ