Transcriptionally active chromatin recruits homologous recombination at DNA double-strand breaks.
Transcriptionally active chromatin recruits homologous recombination at DNA double-strand breaks.
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DOI:
10.1038/nsmb.2796
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发表时间:
2014-04
影响因子:
16.8
通讯作者:
Legube G
中科院分区:
文献类型:
--
作者:
Aymard F;Bugler B;Schmidt CK;Guillou E;Caron P;Briois S;Iacovoni JS;Daburon V;Miller KM;Jackson SP;Legube G
While both Homologous recombination (HR) and Non Homologous End Joining (NHEJ) can repair DNA double Strand Breaks (DSB), the mechanisms by which one or other of these pathways is chosen remain unclear. Here we show that transcriptionally active chromatin is preferentially repaired by HR. Using chromatin immunoprecipitation-sequencing (ChIP-seq), to analyse repair of multiple DSBs induced throughout the human genome, we identify an “HR-prone” subset of DSBs that recruit the HR protein RAD51, undergo resection and rely on RAD51 for efficient repair. These DSBs are located in actively transcribed genes, and targeted to HR repair via the transcription-elongation associated histone mark, histone H3 lysine 36 trimethylation (H3K36me3). In agreement, depletion of SETD2, the main H3K36 tri-methyltransferase, severely impedes HR at such DSBs. Our study thereby demonstrates a primary role of the chromatin context, in which a break occurs, in DSB repair.
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Ernst, Jason;Kheradpour, Pouya;Mikkelsen, Tarjei S.;Shoresh, Noam;Ward, Lucas D.;Epstein, Charles B.;Zhang, Xiaolan;Wang, Li;Issner, Robbyn;Coyne, Michael;Ku, Manching;Durham, Timothy;Kellis, Manolis;Bernstein, Bradley E.
通讯作者:
Bernstein, Bradley E.
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Trouche, Didier
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通讯作者:
Nussenzweig MC
影响因子:
16.8
作者:
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通讯作者:
Jaattela, Marja
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