BLM helicase facilitates Mus81 endonuclease activity in human cells.
BLM helicase facilitates Mus81 endonuclease activity in human cells.
复制标题
BLM 解旋酶促进人类细胞中 Mus81 核酸内切酶的活性。
DOI:
10.1158/0008-5472.can-04-2421
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发表时间:
2005
期刊:
影响因子:
11.2
通讯作者:
Harris,CurtisC
中科院分区:
文献类型:
--
作者:
Zhang,Ran;Sengupta,Sagar;Yang,Qin;Linke,StevenP;Yanaihara,Nozomu;Bradsher,John;Blais,Veronique;McGowan,ClareH;Harris,CurtisC
Bloom syndrome is a rare, autosomal recessive inherited disorder in humans. The product of the Bloom syndrome mutated gene, designated BLM, is a member of the RecQ helicase family. BLM has been proposed to function at the interface of replication and recombination, and to facilitate the repair of DNA damage. Here, we reportin vivophysical interaction and colocalization of BLM and a DNA structure–specific endonuclease, Mus81, at sites of stalled replication forks outside the promyelocytic leukemia nuclear bodies during the S-phase arrest of the cell cycle. Amino acids 125 to 244 of Mus81 interact with the C-terminal region (amino acids 1,007-1,417) of BLM. Whereas Mus81 does not have any effect on the helicase activity of BLM, BLM can stimulate Mus81 endonuclease activity on the nicked Holliday junctions and 3′ flap. This stimulation is due to enhanced binding of Mus81 to the DNA substrates. These data suggest a new function of BLM in cooperating with Mus81 during processing and restoration of stalled replication forks.
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影响因子:
3.3
作者:
Sharma, S;Otterlei, M;Brosh, RM
通讯作者:
Brosh, RM
影响因子:
10.5
作者:
Kaliraman, V;Mullen, JR;Brill, SJ
通讯作者:
Brill, SJ
影响因子:
16
作者:
Gaillard, PHL;Noguchi, E;Russell, P
通讯作者:
Russell, P
影响因子:
4.8
作者:
Braybrooke, JP;Li, JL;Hickson, ID
通讯作者:
Hickson, ID
DOI:
10.1038/nsmb0804-693
发表时间:
2004
期刊:
Nature Structural &Molecular Biology
影响因子:
--
作者:
M. Whitby
通讯作者:
M. Whitby