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相关概念视频

DNA-only Transposons02:57

DNA-only Transposons

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DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
The donor site from where the transposon is excised is either degraded or...
17.8K

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相关实验视频

Updated: Mar 6, 2026

Promoter Capture Hi-C: High-resolution, Genome-wide Profiling of Promoter Interactions
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Promoter Capture Hi-C: High-resolution, Genome-wide Profiling of Promoter Interactions

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通过基因组架构映射捕获的复杂多增强器接触

Robert A Beagrie1,2,3, Antonio Scialdone4, Markus Schueler1

  • 1Epigenetic Regulation and Chromatin Architecture Group, Berlin Institute for Medical Systems Biology, Max-Delbrück Centre for Molecular Medicine, Robert-Rössle Straße, Berlin-Buch 13125, Germany.

Nature
|March 9, 2017
PubMed
概括
此摘要是机器生成的。

基因组架构映射 (GAM) 揭示了基因和调控元素在核中的3D空间中如何相互作用. 这种新方法为基因组组织及其在基因表达中的作用提供了前所未有的洞察力.

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Mapping Mammalian 3D Genome Interactions with Micro-C-XL
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Deciphering High-Resolution 3D Chromatin Organization via Capture Hi-C
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Deciphering High-Resolution 3D Chromatin Organization via Capture Hi-C

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相关实验视频

Last Updated: Mar 6, 2026

Promoter Capture Hi-C: High-resolution, Genome-wide Profiling of Promoter Interactions
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Mapping Mammalian 3D Genome Interactions with Micro-C-XL
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Deciphering High-Resolution 3D Chromatin Organization via Capture Hi-C
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Deciphering High-Resolution 3D Chromatin Organization via Capture Hi-C

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科学领域:

  • 基因组学
  • 分子生物学
  • 细胞生物学

背景情况:

  • 基因调控依赖于核中的3D基因组组织.
  • 基因组组织和基因调节元件相互作用的破坏与疾病有关.
  • 目前的技术在完全捕捉基因组架构方面存在局限性.

研究的目的:

  • 引入一种全基因组的新方法,即基因组架构映射 (GAM),用于测量3D染色质拓.
  • 通过大基因组距离来研究基因与调节元件之间的相互作用.
  • 探索高阶染色体接触及其在基因组组织中的作用.

主要方法:

  • 基因组架构映射 (GAM) 涉及从薄核段进行DNA测序.
  • 在小鼠胚胎干细胞中应用GAM.
  • 使用SLICE (统计推断共分离) 数学模型来分析染色体接触.

主要成果:

  • 在大基因组距离之间,GAM确定了活性基因和增强剂之间的特定相互作用.
  • 这项研究揭示了大量的三向染色体接触,特别是涉及高度转录的区域和超级增强剂.
  • GAM提供了以前无法使用现有技术的基因组架构的新见解.

结论:

  • GAM是一个强大的新方法来研究3D基因组组织.
  • 基因表达特异性接触在哺乳动物核的组织中起着重要作用.
  • 了解基因组结构对于理解基因调节和疾病机制至关重要.