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相关概念视频

Replication in Eukaryotes01:29

Replication in Eukaryotes

In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
Many Proteins Orchestrate Replication at the Origin
Eukaryotic replication follows many of the same...
Replication in Eukaryotes02:31

Replication in Eukaryotes

Overview
Replication in Eukaryotes01:29

Replication in Eukaryotes

In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
Many Proteins Orchestrate Replication at the Origin
Eukaryotic replication follows many of the same...
Replication in Eukaryotes02:31

Replication in Eukaryotes

Overview
Genome Copying Errors02:46

Genome Copying Errors

DNA replication is a well-evolved process that copies millions of base pairs with high fidelity during each cell division. Occasionally a wrong base or a long stretch of wrong bases may get added to the daughter strands. If the errors are left unchecked, cells might accumulate several mutations that might endanger their  survival. Therefore, the copying errors are checked and repaired at three levels.
The DNA Replication Fork01:02

The DNA Replication Fork

An organism’s genome needs to be duplicated in an efficient and error-free manner for its growth and survival. The replication fork is a Y-shaped active region where two strands of DNA are separated and replicated continuously. The coupling of DNA unzipping and complementary strand synthesis is a characteristic feature of a replication fork.   Organisms with small circular DNA, such as E. coli, often have a single origin of replication; therefore, they have only two replication forks, one in...

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相关实验视频

Updated: May 30, 2026

Visualization of DNA Replication in the Vertebrate Model System DT40 using the DNA Fiber Technique
07:18

Visualization of DNA Replication in the Vertebrate Model System DT40 using the DNA Fiber Technique

Published on: October 27, 2011

绑定的基因在复制过程中得到检查.

Jiri Lukas1, Jiri Bartek

  • 1Centre for Genotoxic Stress Research, Danish Cancer Society, Strandboulevarden 49, DK-2100 Copenhagen, Denmark. jil@cancer.dk

Cell
|July 26, 2011
PubMed
概括
此摘要是机器生成的。

复制应激检查点保持基因组的完整性. 贝尔梅约等人. 贝尔梅约等人. (2011) 揭示了检查点功能与缓解核孔附近基因的拓张力之间的联系.

更多相关视频

Chromosome Replicating Timing Combined with Fluorescent In situ Hybridization
17:14

Chromosome Replicating Timing Combined with Fluorescent In situ Hybridization

Published on: December 10, 2012

相关实验视频

Last Updated: May 30, 2026

Visualization of DNA Replication in the Vertebrate Model System DT40 using the DNA Fiber Technique
07:18

Visualization of DNA Replication in the Vertebrate Model System DT40 using the DNA Fiber Technique

Published on: October 27, 2011

Chromosome Replicating Timing Combined with Fluorescent In situ Hybridization
17:14

Chromosome Replicating Timing Combined with Fluorescent In situ Hybridization

Published on: December 10, 2012

科学领域:

  • 细胞生物学 细胞生物学
  • 基因组学就是基因组学.
  • 分子生物学分子生物学

背景情况:

  • 复制应激对于检查点激活至关重要.
  • 维护复制基因组的完整性至关重要.
  • 精确的机制尚未完全理解.

研究的目的:

  • 确定一种新的机制,将检查点激活与拓张力的解决联系起来.
  • 为了阐明细胞如何在压力下保持复制基因组的完整性.

主要方法:

  • 伯梅乔等人进行的研究. (2011) 研究了DNA复制,检查点控制和基因组稳定性之间的关系.
  • 分析了特定的分子通路,以了解拓紧张缓解的作用.

主要成果:

  • 检查点功能与拓张力减轻之间确立了直接联系.
  • 这种机制在核孔绑定基因中运作,这表明基因组维护的空间组成部分.

结论:

  • 这些发现揭示了在复制压力期间维持基因组完整性的新途径.
  • 这种机制强调了拓张力管理在防止基因组不稳定性方面的重要性.