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相关概念视频

Coordination of Gene Expression Processes in Bacteria01:29

Coordination of Gene Expression Processes in Bacteria

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The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...
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DNA Microarrays02:34

DNA Microarrays

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Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
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Gene Duplication and Divergence02:37

Gene Duplication and Divergence

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The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was  generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
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Chromosome Replication02:31

Chromosome Replication

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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...
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Replication in Prokaryotes01:32

Replication in Prokaryotes

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DNA replication has three main steps: initiation, elongation, and termination. Replication in prokaryotes begins when initiator proteins bind to the single origin of replication (ori) on the cell's circular chromosome. Replication then proceeds around the entire circle of the chromosome in each direction from the two replication forks, resulting in two DNA molecules.
Many Proteins Work Together to Replicate the Chromosome
Replication is coordinated and carried out by a host of specialized...
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Replication in Prokaryotes02:35

Replication in Prokaryotes

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Overview
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Chromosome Replicating Timing Combined with Fluorescent In situ Hybridization
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Chromosome Replicating Timing Combined with Fluorescent In situ Hybridization

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部分:对复制时间和基因表达的并行分析.

Lakshana Sruthi Sadu Murari1, Quinn Dickinson1, Silvia Meyer-Nava1

  • 1Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota Medical School, Minneapolis, Minnesota.

bioRxiv : the preprint server for biology
|September 15, 2025
PubMed
概括
此摘要是机器生成的。

复制时间 (RT) 和基因组组织与基因表达和疾病有关. 一种名为PARTAGE的新方法,从单个样本中联合分析拷贝数变异,RT和基因表达,以获得更好的洞察力.

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科学领域:

  • 基因组学就是基因组学.
  • 分子生物学分子生物学
  • 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.

背景情况:

  • 人类基因组被组织成功能部分,在S阶段进行复制,这一过程被称为复制时间 (RT).
  • RT是细胞类型特定的,与3D基因组组织和基因表达协调,并在癌症等疾病中发生变化.
  • 目前的方法分别分析RT和基因表达,阻碍对它们的共同调节的理解.

研究的目的:

  • 开发一种多组学方法,同时对拷贝数变异 (CNV),RT和基因表达进行分析.
  • 提供RT,基因组架构和转录调节之间的关系的综合视图.

主要方法:

  • 开发了 PARTAGE,一种新的多态技术.
  • 从相同的生物样本中启用CNV,RT和基因表达的联合分析.

主要成果:

  • PARTAGE允许对RT和基因调控进行更准确,更综合的分析.
  • 克服了单独样本分析的局限性,揭示了复杂的共同监管机制.

结论:

  • PARTAGE方法有助于更深入地了解复制时间,3D基因组组织和基因表达之间的机械联系.
  • 这种方法对于在健康和疾病,特别是癌症方面研究基因组调节至关重要.