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相关概念视频

DNA Replication02:40

DNA Replication

49.4K
DNA replication involves the separation of the two strands of the double helix, with each strand serving as a template from which the new complementary strand is copied.  After replication, each double-stranded DNA includes one parental or “old” strand and one “new” strand. This is known as semiconservative replication. The resulting DNA molecules have the same sequence and are divided equally into the two daughter cells.
Replication in Prokaryotes
DNA replication...
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Chromosome Replication02:31

Chromosome Replication

8.7K
Before a cell can divide, it must accurately replicate all of its chromosomes, including the DNA and its associated histone and non-histone proteins.  This process begins at numerous origins of replication during the S phase of the cell cycle in each of a cell’s chromosomes simultaneously. Certain nucleotides can act as origins of replication, but these sequences are not well defined - especially in complex, multi-cellular, eukaryotic species. The length of DNA that spans an origin...
8.7K
The Replisome03:01

The Replisome

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DNA replication is carried out by a large complex of proteins that act in a coordinated matter to achieve high-fidelity DNA replication. Together this complex is known as the DNA replication machinery or the replisome.
The synthesis of the leading and lagging strands is a highly coordinated process. To explain this, the “Trombone model” was proposed by Bruce Alberts in 1980. The DNA loop formation starts when a primer is synthesized on the parent lagging strand. The loop grows with...
33.4K
Restarting Stalled Replication Forks02:37

Restarting Stalled Replication Forks

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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,...
5.8K
The DNA Replication Fork01:02

The DNA Replication Fork

35.9K
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...
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Replication in Eukaryotes02:31

Replication in Eukaryotes

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Overview
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相关实验视频

Updated: Jun 29, 2025

Strand-Specific Analysis of Proteins at Replicating DNA Strands by Enrichment and Sequencing of Protein-Associated Nascent DNA Method
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Strand-Specific Analysis of Proteins at Replicating DNA Strands by Enrichment and Sequencing of Protein-Associated Nascent DNA Method

Published on: May 2, 2025

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对复制研究的权力先验.

Samuel Pawel1, Frederik Aust2, Leonhard Held1

  • 1Epidemiology, Biostatistics and Prevention Institute (EBPI), Center for Reproducible Science (CRS), University of Zurich, Zurich, Switzerland.

Test (Madrid, Spain)
|April 8, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的贝叶斯分析,使用权力先验来评估复制研究的兼容性. 该方法基于数据冲突动态调整信息借用,有助于科学可重复性.

关键词:
贝叶斯因子是一个贝叶斯因子.贝叶斯式假设测试测试贝叶斯式假设测试贝叶斯参数估计的贝叶斯参数估计层次模型是层次模型.历史数据 历史数据

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Genome-wide Determination of Mammalian Replication Timing by DNA Content Measurement
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Genome-wide Determination of Mammalian Replication Timing by DNA Content Measurement

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G2-seq: A High Throughput Sequencing-based Technique for Identifying Late Replicating Regions of the Genome
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G2-seq: A High Throughput Sequencing-based Technique for Identifying Late Replicating Regions of the Genome

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相关实验视频

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Strand-Specific Analysis of Proteins at Replicating DNA Strands by Enrichment and Sequencing of Protein-Associated Nascent DNA Method
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Strand-Specific Analysis of Proteins at Replicating DNA Strands by Enrichment and Sequencing of Protein-Associated Nascent DNA Method

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Genome-wide Determination of Mammalian Replication Timing by DNA Content Measurement
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Genome-wide Determination of Mammalian Replication Timing by DNA Content Measurement

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G2-seq: A High Throughput Sequencing-based Technique for Identifying Late Replicating Regions of the Genome
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科学领域:

  • 统计 统计 统计 统计
  • 科学方法科学方法学

背景情况:

  • 科学中的复制危机需要强大的方法来评估复制研究.
  • 评估原始和复制研究结果之间的兼容性对于科学完整性至关重要.

研究的目的:

  • 提出一种新的贝叶斯分析方法,使用权力先验来评估复制研究.
  • 量化原始数据和复制数据之间的兼容性.
  • 在复制分析中探索从原始研究中借鉴动态信息.

主要方法:

  • 一种贝叶斯的权力先验方法,其中原始研究的概率被提升到一个权力,并作为复制数据的先验.
  • 以后分布和贝叶斯因子假设测试对功率参数进行测试,以评估研究兼容性.
  • 正常功率先值与正常等级模型之间的联系的概括.

主要成果:

  • 权力先验方法量化了原始和复制研究之间的兼容性程度.
  • 对效果大小等参数的推断动态地从原始研究中借取信息,适应数据冲突.
  • 建立了权力先行模型和层次模型之间的通用连接,澄清了它们之间的关系.

结论:

  • 提出的贝叶斯电力先验方法为分析复制研究提供了一个灵活的框架.
  • 这种方法提供了一种原则性的方法来量化支持或反对复制成功的证据.
  • 了解与等级模型的联系可以提高科学研究中权力先验方法的解释性和应用性.