Nap1 stimulates homologous recombination by RAD51 and RAD54 in higher-ordered chromatin containing histone H1.
Nap1 stimulates homologous recombination by RAD51 and RAD54 in higher-ordered chromatin containing histone H1.
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DOI:
10.1038/srep04863
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发表时间:
2014-05-06
影响因子:
4.6
通讯作者:
Kurumizaka H
中科院分区:
文献类型:
--
作者:
Machida S;Takaku M;Ikura M;Sun J;Suzuki H;Kobayashi W;Kinomura A;Osakabe A;Tachiwana H;Horikoshi Y;Fukuto A;Matsuda R;Ura K;Tashiro S;Ikura T;Kurumizaka H
Homologous recombination plays essential roles in mitotic DNA double strand break (DSB) repair and meiotic genetic recombination. In eukaryotes, RAD51 promotes the central homologous-pairing step during homologous recombination, but is not sufficient to overcome the reaction barrier imposed by nucleosomes. RAD54, a member of the ATP-dependent nucleosome remodeling factor family, is required to promote the RAD51-mediated homologous pairing in nucleosomal DNA. In higher eukaryotes, most nucleosomes form higher-ordered chromatin containing the linker histone H1. However, the mechanism by which RAD51/RAD54-mediated homologous pairing occurs in higher-ordered chromatin has not been elucidated. In this study, we found that a histone chaperone, Nap1, accumulates on DSB sites in human cells, and DSB repair is substantially decreased in Nap1-knockdown cells. We determined that Nap1 binds to RAD54, enhances the RAD54-mediated nucleosome remodeling by evicting histone H1, and eventually stimulates the RAD51-mediated homologous pairing in higher-ordered chromatin containing histone H1.
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影响因子:
11.6
作者:
Gao, Juan;Zhu, Yan;Shen, Wen-Hui
通讯作者:
Shen, Wen-Hui
影响因子:
13.8
作者:
Das, Chandrima;Tyler, Jessica K.;Churchill, Mair E. A.
通讯作者:
Churchill, Mair E. A.
影响因子:
5.6
作者:
Lowary, PT;Widom, J
通讯作者:
Widom, J
DOI:
10.1038/nsb901
发表时间:
2003-03-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Alexeev, A;Mazin, A;Kowalczykowski, SC
通讯作者:
Kowalczykowski, SC
影响因子:
2.9
作者:
Arimura, Yasuhiro;Tachiwana, Hiroaki;Kurumizaka, Hitoshi
通讯作者:
Kurumizaka, Hitoshi