DNA polymerase κ-dependent DNA synthesis at stalled replication forks is important for CHK1 activation.

DNA polymerase κ-dependent DNA synthesis at stalled replication forks is important for CHK1 activation.
复制标题

DOI:
10.1038/emboj.2013.148
复制
发表时间:
2013-07-31
期刊:
影响因子:
11.4
通讯作者:
Hoffmann, Jean-Sebastien
Hoffmann, Jean-Sebastien
中科院分区:
生物学1区
文献类型:
--
作者:
Betous, Remy;Pillaire, Marie-Jeanne;Pierini, Laura;van der Laan, Siem;Recolin, Benedicte;Ohl-Seguy, Emma;Guo, Caixia;Niimi, Naoko;Gruz, Petr;Nohmi, Takehiko;Friedberg, Errol;Cazaux, Christophe;Maiorano, Domenico;Hoffmann, Jean-Sebastien

文献摘要

参考文献

被引文献

相似文献

在停滞的复制分叉处形成引物单链DNA触发复制检查点信号级联的激活,导致atr介导的Chk1蛋白激酶磷酸化,从而防止基因组不稳定。通过sirna介导的人类细胞耗竭和非洲爪蟾卵提取物的免疫耗竭和重构实验,我们报告了y家族翻译(TLS) DNA聚合酶kappa (Pol κ)参与复制checkpoint应答,并且是复制应激后恢复所必需的。我们发现,Pol κ参与了停滞分叉处短DNA中间产物的合成,促进了911检查点钳的招募。此外,我们发现Pol κ与9-1-1复合物的Rad9亚基相互作用。最后,我们证明了这种新的Pol κ检查点功能对于维持非应激人类细胞的基因组稳定性和细胞增殖是必需的。
Formation of primed single-stranded DNA at stalled replication forks triggers activation of the replication checkpoint signalling cascade resulting in the ATR-mediated phosphorylation of the Chk1 protein kinase, thus preventing genomic instability. By using siRNA-mediated depletion in human cells and immunodepletion and reconstitution experiments in Xenopus egg extracts, we report that the Y-family translesion (TLS) DNA polymerase kappa (Pol κ) contributes to the replication checkpoint response and is required for recovery after replication stress. We found that Pol κ is implicated in the synthesis of short DNA intermediates at stalled forks, facilitating the recruitment of the 9-1-1 checkpoint clamp. Furthermore, we show that Pol κ interacts with the Rad9 subunit of the 9-1-1 complex. Finally, we show that this novel checkpoint function of Pol κ is required for the maintenance of genomic stability and cell proliferation in unstressed human cells.
DOI: 10.1016/j.molcel.2010.01.002
发表时间: 2010-02-12
期刊: MOLECULAR CELL
影响因子: 16
作者:
Gong, Zihua;Kim, Ja-Eun;Leung, Charles Chung Yun;Glover, J. N. Mark;Chen, Junjie
通讯作者: Chen, Junjie
DOI: 10.1093/nar/gkr889
发表时间: 2012-02
影响因子: 14.9
作者:
Hile SE;Wang X;Lee MY;Eckert KA
通讯作者: Eckert KA
DOI: 10.1101/gad.1013502
发表时间: 2002-09-15
影响因子: 10.5
作者:
Lupardus, PJ;Byun, T;Cimprich, KA
通讯作者: Cimprich, KA
DOI: 10.1073/pnas.1003449107
发表时间: 2010-05-04
影响因子: 11.1
作者:
Callegari, A. John;Clark, Emily;Kelly, Thomas J.
通讯作者: Kelly, Thomas J.
DOI: 10.1101/gad.291104
发表时间: 2004-05-15
影响因子: 10.5
作者:
Furuya, K;Poitelea, M;Carr, AM
通讯作者: Carr, AM