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The DNA Replication Fork01:02

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DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart,...
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解码复制应激反应通过后翻译修改.

Jinhua Han1, Mengjie Wu2, Ting Liu3,4

  • 1Zhejiang Key Laboratory of Geriatrics and Geriatrics Institute of Zhejiang Province, Affiliated Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, China.

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概括
此摘要是机器生成的。

细胞使用复杂的DNA复制应激反应来维持基因组的稳定性. 翻译后修饰 (PTM) 是这些通路的关键调节者,在基因毒性条件下确保精确的DNA重复.

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科学领域:

  • 分子生物学分子生物学
  • 遗传学 是一个遗传学.
  • 细胞生物学 细胞生物学

背景情况:

  • DNA复制对于细胞分裂至关重要,但面临着威胁基因组完整性的挑战.
  • 细胞拥有复杂的应激反应机制,可以在复制过程中保护基因组.
  • 后翻译性修改 (PTMs) 对于调节这些应激反应至关重要.

研究的目的:

  • 审查细胞用来应对复制压力的机制.
  • 突出PTMs在调节DNA复制分叉动态中的作用.
  • 讨论基因组稳定性维护中的基因组和非基因组PTM.

主要方法:

  • 关于细胞对复制应激反应的文献综述.
  • 分析PTM在DNA复制和修复途径中的作用.
  • 综合了关于基因素和非基因素修饰的当前研究.

主要成果:

  • 复制压力会触发各种保护路径,如检查站和叉子改造.
  • 在应激反应中,PTMs动态控制蛋白质的功能,稳定性和局部化.
  • 基因组和非基因组PTM对于精确调节复制分叉的过程至关重要.

结论:

  • 细胞对复制压力的反应是复杂的,对基因组稳定性至关重要.
  • 在协调这些反应方面,PTM发挥着至关重要的,动态的作用.
  • 对PTM的进一步研究提供了关于在压力下保持基因组完整性的见解.