The Clash of Macromolecular Titans: Replication-Transcription Conflicts in Bacteria.

The Clash of Macromolecular Titans: Replication-Transcription Conflicts in Bacteria.
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DOI:
10.1146/annurev-micro-090817-062514
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发表时间:
2018-09-08
影响因子:
10.5
通讯作者:
Merrikh H
Merrikh H
中科院分区:
生物学1区
文献类型:
--
作者:
Lang KS;Merrikh H

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在过去的十年中,人们已经清楚地认识到,在生长的细胞中,DNA复制和转录通常是相互冲突的。关于这一主题的许多开创性工作都是在细菌中进行的,特别是大肠杆菌和枯草芽孢杆菌;因此,这些物种中的冲突研究值得特别关注。总的来说,最近关于冲突的发现从根本上改变了我们对体内DNA复制的看法。此外,有关该主题的新见解表明,复制和转录之间的冲突显着影响细胞功能的许多关键参数,包括基因组组织、突变以及应激反应和毒力基因的进化。在这篇综述中,我们讨论了复制-转录冲突对细菌生命的影响,并描述了细胞用于解决这些冲突的一些关键策略。我们特别强调了这些遭遇的两个关键方面:(a)冲突对复制体稳定性和动态的影响,以及(B)由此导致的自发突变的增加。
Within the last decade, it has become clear that DNA replication and transcription are routinely in conflict with each other in growing cells. Much of the seminal work on this topic has been carried out in bacteria, specifically, Escherichia coli and Bacillus subtilis; therefore, studies of conflicts in these species deserve special attention. Collectively, the recent findings on conflicts have fundamentally changed the way we think about DNA replication in vivo. Furthermore, new insights on this topic have revealed that the conflicts between replication and transcription significantly influence many key parameters of cellular function, including genome organization, mutagenesis, and evolution of stress response and virulence genes. In this review, we discuss the consequences of replication-transcription conflicts on the life of bacteria and describe some key strategies cells use to resolve them. We put special emphasis on two critical aspects of these encounters: (a) the consequences of conflicts on replisome stability and dynamics, and (b) the resulting increase in spontaneous mutagenesis.
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