RAD51- and MRE11-dependent reassembly of uncoupled CMG helicase complex at collapsed replication forks.
RAD51- and MRE11-dependent reassembly of uncoupled CMG helicase complex at collapsed replication forks.
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DOI:
10.1038/nsmb.2177
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发表时间:
2011-12-04
影响因子:
16.8
通讯作者:
Costanzo, Vincenzo
中科院分区:
文献类型:
--
作者:
Hashimoto, Yoshitami;Puddu, Fabio;Costanzo, Vincenzo
In higher eukaryotes the dynamics of replisome components during fork collapse and restart are poorly understood. Here, we reconstituted replication fork collapse and restart by inducing single-strand DNA (ssDNA) lesions that create a double-strand break (DSB) in one of the replicated sister chromatids after fork passage. We found that, upon fork collapse, the active CDC45–MCM–GINS (CMG) helicase complex loses its GINS subunit. A functional replisome is restored by the reloading of GINS and Pol epsilon onto DNA in a RAD51- and MRE11- dependent manner, but independently of replication origin assembly and firing. PCNA mutant alleles defective in break-induced replication (BIR) are unable to support restoration of replisome integrity. These results reveal that in higher eukaryotes replisomes are partially dismantled following fork collapse and fully re-established by a recombination-mediated process.
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DOI:
10.1083/jcb.200212052
发表时间:
2003-03-31
期刊:
The Journal of cell biology
影响因子:
--
作者:
Li SJ;Hochstrasser M
通讯作者:
Hochstrasser M
影响因子:
64.5
作者:
Buis J;Wu Y;Deng Y;Leddon J;Westfield G;Eckersdorff M;Sekiguchi JM;Chang S;Ferguson DO
通讯作者:
Ferguson DO
影响因子:
10.5
作者:
Kubota, Y;Takase, Y;Takisawa, H
通讯作者:
Takisawa, H
影响因子:
30.8
作者:
Falck, J;Petrini, JHJ;Bartek, J
通讯作者:
Bartek, J
影响因子:
21.3
作者:
Gambus, A;Jones, RC;Labib, K
通讯作者:
Labib, K