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Reshaping Chromatin after DNA Damage: The Choreography of Histone Proteins

机译:DNA损伤后重塑染色质:组蛋白蛋白的编排

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摘要

DNA damage signaling and repair machineries operate in a nuclear environment where DNA is wrapped around. histone proteins and packaged into chromatin. Understanding how chromatin structure is restored together with the DNA sequence during DNA damage repair has been a topic of intense research. Indeed, chromatin integrity is central to cell functions and identity. However, chromatin shows remarkable plasticity in response to DNA damage. This review presents our current knowledge of chromatin dynamics in the mammalian cell nucleus in response to DNA double strand breaks and UV lesions. I provide an overview of the key players involved in regulating histone dynamics in damaged chromatin regions, focusing on histone chaperones and their concerted action with histone modifiers, chromatin remodelers and repair factors. I also discuss how these dynamics contribute to reshaping chromatin and, by altering the chromatin landscape, may affect the maintenance of epigenetic information. (c) 2014 Elsevier Ltd. All rights reserved.
机译:DNA损伤信号和修理机械在核环境中运行,其中DNA包裹。组蛋白蛋白并包装成染色质。了解染色质结构如何与DNA序列在DNA损伤修复期间与DNA序列一起恢复,这是一个激烈的研究。实际上,染色质完整性是细胞功能和身份的核心。然而,染色质表现出响应DNA损伤的显着可塑性。本综述响应DNA双链断裂和UV病变,介绍了我们目前对哺乳动物细胞核中的染色质动力学的知识。我概述了参与调节受损的染色质区域中的组蛋白动态的关键参与者,重点关注组蛋白伴侣及其与组蛋白改性剂,染色质重塑和修复因子的齐节作用。我还讨论了这些动态如何促成重塑染色质,并且通过改变染色质景观,可能会影响表观遗传信息的维护。 (c)2014年elestvier有限公司保留所有权利。

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