Human BRCA1-BARD1 ubiquitin ligase activity counteracts chromatin barriers to DNA resection.
Human BRCA1-BARD1 ubiquitin ligase activity counteracts chromatin barriers to DNA resection.
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DOI:
10.1038/nsmb.3236
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发表时间:
2016-07
影响因子:
16.8
通讯作者:
Morris JR
中科院分区:
文献类型:
--
作者:
Densham RM;Garvin AJ;Stone HR;Strachan J;Baldock RA;Daza-Martin M;Fletcher A;Blair-Reid S;Beesley J;Johal B;Pearl LH;Neely R;Keep NH;Watts FZ;Morris JR
The opposing activities of 53BP1 and BRCA1 influence pathway choice of DNA double-strand break repair. How BRCA1 counters the inhibitory effect of 53BP1 on DNA resection and homologous recombination is unknown. Here we identify the site of BRCA1-BARD1 required for priming ubiquitin transfer from E2~ubiquitin. We demonstrate that BRCA1-BARD1’s ubiquitin ligase activity is required for repositioning 53BP1 on damaged chromatin. We confirm H2A ubiquitylation by BRCA1-BARD1 and show that an H2A-ubiquitin fusion protein promotes DNA resection and repair in BARD1 deficient cells. We show BRCA1-BARD1 function in homologous recombination requires the chromatin remodeler SMARCAD1. SMARCAD1 binding to H2A-ubiquitin, optimal localization to sites of damage and activity in DNA repair requires its ubiquitin-binding CUE domains. SMARCAD1 is required for 53BP1 repositioning and the need for SMARCAD1 in Olaparib or camptothecin resistance is alleviated by 53BP1 loss. Thus BRCA1-BARD1 ligase activity and subsequent SMARCAD1-dependent chromatin remodeling are critical regulators of DNA repair.
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影响因子:
4
作者:
Chapman, J. Ross;Sossick, Alex J.;Jackson, Stephen P.
通讯作者:
Jackson, Stephen P.
影响因子:
64.8
作者:
Costelloe, Thomas;Louge, Raphael;Tomimatsu, Nozomi;Mukherjee, Bipasha;Martini, Emmanuelle;Khadaroo, Basheer;Dubois, Kenny;Wiegant, Wouter W.;Thierry, Agnes;Burma, Sandeep;van Attikum, Haico;Llorente, Bertrand
通讯作者:
Llorente, Bertrand
影响因子:
8.8
作者:
Cruz-Garcia, Andres;Lopez-Saavedra, Ana;Huertas, Pablo
通讯作者:
Huertas, Pablo
影响因子:
16
作者:
Escribano-Diaz, Cristina;Orthwein, Alexandre;Durocher, Daniel
通讯作者:
Durocher, Daniel
DOI:
10.1074/jbc.m109.082149
发表时间:
2010-03-26
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Awad S;Ryan D;Prochasson P;Owen-Hughes T;Hassan AH
通讯作者:
Hassan AH