Two distinct modes of ATR activation orchestrated by Rad17 and Nbs1.
Two distinct modes of ATR activation orchestrated by Rad17 and Nbs1.
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DOI:
10.1016/j.celrep.2013.04.018
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发表时间:
2013-05-30
期刊:
影响因子:
8.8
通讯作者:
Zou L
中科院分区:
文献类型:
--
作者:
Shiotani B;Nguyen HD;Håkansson P;Maréchal A;Tse A;Tahara H;Zou L
The ATR kinase is a master regulator of the DNA damage response. Yet, how ATR is activated towards different substrates is still poorly understood. Here, we show that ATR phosphorylates Chk1 and RPA32 through distinct mechanisms at replication-associated DNA double-stranded breaks (DSBs). In contrast to the rapid phosphorylation of Chk1, RPA32 is progressively phosphorylated by ATR at Ser33 during DSB resection prior to the phosphorylation of Ser4/Ser8 by DNA-PKcs. Surprisingly, despite its reliance on ATR and TopBP1, substantial RPA32 Ser33 phosphorylation occurs in a Rad17-independent but Nbs1-dependent manner in vivo and in vitro. Importantly, the role of Nbs1 in RPA32 phosphorylation can be separated from ATM activation and DSB resection, and is dependent upon its interaction with RPA. An Nbs1 mutant unable to bind RPA fails to support proper recovery of collapsed replication forks, suggesting that the Nbs1-mediated mode of ATR activation is important for the repair of replication-associated DSBs.
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影响因子:
3.3
作者:
Lee J;Dunphy WG
通讯作者:
Dunphy WG
DOI:
10.1126/science.1203430
发表时间:
2011-06-10
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Cotta-Ramusino C;McDonald ER 3rd;Hurov K;Sowa ME;Harper JW;Elledge SJ
通讯作者:
Elledge SJ
影响因子:
13.8
作者:
Flynn, Rachel Litman;Zou, Lee
通讯作者:
Zou, Lee
DOI:
10.1083/jcb.200510130
发表时间:
2006-04-24
期刊:
The Journal of cell biology
影响因子:
--
作者:
Bekker-Jensen S;Lukas C;Kitagawa R;Melander F;Kastan MB;Bartek J;Lukas J
通讯作者:
Lukas J
影响因子:
64.5
作者:
Barlow JH;Faryabi RB;Callén E;Wong N;Malhowski A;Chen HT;Gutierrez-Cruz G;Sun HW;McKinnon P;Wright G;Casellas R;Robbiani DF;Staudt L;Fernandez-Capetillo O;Nussenzweig A
通讯作者:
Nussenzweig A