Regulation of DNA end joining, resection, and immunoglobulin class switch recombination by 53BP1.
Regulation of DNA end joining, resection, and immunoglobulin class switch recombination by 53BP1.
复制标题
DOI:
10.1016/j.molcel.2011.03.019
复制
发表时间:
2011-05-06
期刊:
影响因子:
16
通讯作者:
Nussenzweig MC
中科院分区:
文献类型:
--
作者:
Bothmer A;Robbiani DF;Di Virgilio M;Bunting SF;Klein IA;Feldhahn N;Barlow J;Chen HT;Bosque D;Callen E;Nussenzweig A;Nussenzweig MC
53BP1 is a DNA damage protein that forms phosphorylated H2AX (γ-H2AX) dependent foci in a 1 Mb region surrounding DNA double strand breaks (DSBs). In addition, 53BP1 promotes genomic stability by regulating the metabolism of DNA ends. We have compared the joining rates of paired DSBs separated by 1.2 kb to 27 Mb on chromosome 12 in the presence or absence of 53BP1. 53BP1 facilitates joining of intrachromosomal DSBs but only at distances corresponding to γ-H2AX spreading. In contrast, DNA end protection by 53BP1 is distance independent. Furthermore, analysis of 53BP1 mutants shows that chromatin association, oligomerization, and N-terminal ATM phosphorylation are all required for DNA end protection and joining as measured by immunoglobulin class switch recombination. The data elucidate the molecular events that are required for 53BP1 to maintain genomic stability and point to a model wherein 53BP1 and H2AX cooperate to repress resection of DSBs.
登录
查看更多内容
影响因子:
30.5
作者:
Manis, JP;Morales, JC;Carpenter, PB
通讯作者:
Carpenter, PB
影响因子:
56.9
作者:
Celeste, A;Petersen, S;Nussenzweig, A
通讯作者:
Nussenzweig, A
影响因子:
16
作者:
Huen, Michael S. Y.;Huang, Jun;Leung, Justin W. C.;Sy, Shirley M. -H.;Leung, Ka Man;Ching, Yick-Pang;Tsao, Sai Wah;Chen, Junjie
通讯作者:
Chen, Junjie
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
DOI:
10.1038/nrc1299
发表时间:
2004-03
期刊:
Nature reviews. Cancer
影响因子:
--
作者:
通讯作者:
--