The Ubiquitin E3/E4 Ligase UBE4A Adjusts Protein Ubiquitylation and Accumulation at Sites of DNA Damage, Facilitating Double-Strand Break Repair.
The Ubiquitin E3/E4 Ligase UBE4A Adjusts Protein Ubiquitylation and Accumulation at Sites of DNA Damage, Facilitating Double-Strand Break Repair.
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DOI:
10.1016/j.molcel.2018.02.002
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发表时间:
2018-03-01
期刊:
影响因子:
16
通讯作者:
Shiloh Y
中科院分区:
文献类型:
--
作者:
Baranes-Bachar K;Levy-Barda A;Oehler J;Reid DA;Soria-Bretones I;Voss TC;Chung D;Park Y;Liu C;Yoon JB;Li W;Dellaire G;Misteli T;Huertas P;Rothenberg E;Ramadan K;Ziv Y;Shiloh Y
Double-strand breaks (DSBs) are critical DNA lesions that robustly activate the elaborate DNA damage response (DDR) network. We identified a critical player in DDR fine-tuning - the E3/E4 ubiquitin ligase, UBE4A. UBE4A’s recruitment to sites of DNA damage is dependent on primary E3 ligases in the DDR and promotes enhancement and sustainment of K48- and K63-linked ubiquitin chains at these sites. This step is required for timely recruitment of the RAP80 and BRCA1 proteins and proper organization of RAP80- and BRCA1-associated protein complexes at DSB sites. This pathway is essential for optimal end-resection at DSBs, and its abrogation leads to up-regulation of the highly mutagenic alternative end-joining repair at the expense of error-free homologous recombination repair. Our data uncover a critical regulatory level in the DSB response and underscore the importance of fine-tuning of the complex DDR network for accurate and balanced execution of DSB repair.
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影响因子:
16.2
作者:
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通讯作者:
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影响因子:
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通讯作者:
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作者:
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通讯作者:
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