The intertwined roles of transcription and repair proteins.

The intertwined roles of transcription and repair proteins.
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转录和修复蛋白的交织角色。

DOI:
10.1016/j.molcel.2013.10.018
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发表时间:
2013-11-07
期刊:
影响因子:
16
通讯作者:
Tjian, Robert
Tjian, Robert
中科院分区:
生物学1区
文献类型:
--
作者:
Fong, Yick W.;Cattoglio, Claudia;Tjian, Robert

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转录显然是一件冒险的事情。其内在的致突变潜力必须通过DNA修复因子网络进行检查,这些DNA修复因子监测转录过程以修复可能损害转录保真度和基因组完整性的DNA损伤。有趣的是,最近的研究指出了DNA修复复合物作为转录共激活因子的更直接的功能,以及基因启动子处的“预定”DNA损伤/修复的意想不到的作用。巧合的是,自发的DNA双链断裂也会诱导对修复至关重要的异位转录。因此,转录、DNA损伤和修复可能比以前认识到的在物理上和功能上更加交织在一起。
Transcription is apparently risky business. Its intrinsic mutagenic potential must be kept in check by networks of DNA repair factors that monitor the transcription process to repair DNA lesions that could otherwise compromise transcriptional fidelity and genome integrity. Intriguingly, recent studies point to an even more direct function of DNA repair complexes as co-activators of transcription and the unexpected role of “scheduled” DNA damage/repair at gene promoters. Paradoxically, spontaneous DNA double-strand breaks also induce ectopic transcription that is essential for repair. Thus, transcription, DNA damage and repair may be more physically and functionally intertwined than previously appreciated.
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