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.
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DOI:
10.1038/emboj.2013.148
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发表时间:
2013-07-31
期刊:
影响因子:
11.4
通讯作者:
Hoffmann, Jean-Sebastien
中科院分区:
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
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.
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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
影响因子:
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DOI:
10.1073/pnas.1003449107
发表时间:
2010-05-04
影响因子:
11.1
作者:
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通讯作者:
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影响因子:
10.5
作者:
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通讯作者:
Carr, AM