Human GEN1 and the SLX4-associated nucleases MUS81 and SLX1 are essential for the resolution of replication-induced Holliday junctions.
Human GEN1 and the SLX4-associated nucleases MUS81 and SLX1 are essential for the resolution of replication-induced Holliday junctions.
复制标题
DOI:
10.1016/j.celrep.2013.08.041
复制
发表时间:
2013-10-17
期刊:
影响因子:
8.8
通讯作者:
Smogorzewska A
中科院分区:
文献类型:
--
作者:
Garner E;Kim Y;Lach FP;Kottemann MC;Smogorzewska A
Holliday junctions (HJs), the DNA intermediates of homologous recombination need to be faithfully processed in order to preserve genome integrity. In human cells the BLM helicase complex promotes non-nucleolytic dissolution of double HJs. In vitro, HJs may be nucleolytically processed by MUS81-EME1, GEN1, and SLX4-SLX1. Here, we exploit human SLX4-null cells to examine the requirements for HJ resolution in vivo. Lack of BLM and SLX4 or GEN1 and SLX4 are synthetically lethal in the absence of exogenous DNA damage with lethality being a consequence of dysfunctional mitosis proceeding in the presence of unprocessed HJs. Thus, GEN1 activity cannot substitute for the SLX4-associated nucleases and one of the HJ resolvase activities, either those associated with SLX4 or GEN1 is required for cell viability even in the presence of BLM. In-vivo HJ resolution depends on both SLX4-associated MUS81-EME1 and SLX1, suggesting that they are acting in concert in the context of SLX4.
登录
查看更多内容
影响因子:
16
作者:
Chen, XB;Melchionna, R;McGowan, CH
通讯作者:
McGowan, CH
影响因子:
30.8
作者:
Kim, Yonghwan;Lach, Francis P.;Desetty, Rohini;Hanenberg, Helmut;Auerbach, Arleen D.;Smogorzewska, Agata
通讯作者:
Smogorzewska, Agata
影响因子:
64.5
作者:
Fekairi S;Scaglione S;Chahwan C;Taylor ER;Tissier A;Coulon S;Dong MQ;Ruse C;Yates JR 3rd;Russell P;Fuchs RP;McGowan CH;Gaillard PHL
通讯作者:
Gaillard PHL
影响因子:
11.4
作者:
Constantinou, A;Chen, XB;West, SC
通讯作者:
West, SC
影响因子:
64.8
作者:
Wu, L;Hickson, ID
通讯作者:
Hickson, ID