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相关概念视频

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

1.9K
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
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General Transcription Factors01:30

General Transcription Factors

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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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Transcription Factors02:16

Transcription Factors

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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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相关实验视频

Updated: May 5, 2026

Real-time Live Imaging of T-cell Signaling Complex Formation
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Real-time Live Imaging of T-cell Signaling Complex Formation

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人类细胞中的动态转化作用因子同位化.

Dan Xie1, Alan P Boyle, Linfeng Wu

  • 1Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA.

Cell
|November 19, 2013
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种分析转录因子 (TF) 局部化的新方法,揭示了广泛的TF-TF关联以及跨细胞类型和条件的结合模式的动态变化. 这些发现为基因调节的复杂性提供了新的见解.

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Author Spotlight: Evaluation of Protein-Condensate Dynamics in Live Human Cells
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Author Spotlight: Evaluation of Protein-Condensate Dynamics in Live Human Cells

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Visualization of DNA Repair Proteins Interaction by Immunofluorescence
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相关实验视频

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科学领域:

  • 分子生物学分子生物学
  • 基因组学就是基因组学.
  • 系统生物学 系统生物学

背景情况:

  • 转录因子 (TFs) 通过在特定基因组位置的协作结合来协调基因表达.
  • 之前关于TF组合结合的研究范围有限,研究了特定细胞类型或条件中的少数因素.
  • 了解组合TF相互作用对于破译复杂的基因调节网络至关重要.

研究的目的:

  • 开发和应用一种全面的方法,以前所未有的规模来分析转录因子局部化.
  • 调查不同类型和条件的细胞内和跨细胞的TF联结模式.
  • 描述TF联结的功能影响及其在细胞调节中的作用.

主要方法:

  • 利用一种新的分析方法来评估TF在单细胞类型和多个细胞系内的同位化.
  • 对50个不同的转录因子进行免疫沉的综合大规模质谱分析.
  • 在不同的细胞条件下,在不同的细胞类型中检查了TF同位化的动态变化.

主要成果:

  • 确定了大量重要的转录因子-转录因子关联.
  • 在受不同条件影响的细胞内观察到TF局部化模式的广泛变化.
  • 在各种细胞类型中记录了TF联结的显著变化.
  • 展示了与不同TF联结模式相关的独特的功能注释和属性.

结论:

  • 该研究提供了转录因子联结的高分辨率地图,揭示了广泛和动态的相互作用.
  • 这些发现凸显了蜂监管环境的复杂性,由复杂的TF协作驱动.
  • 这项工作提供了通过组合TF活动控制基因调节的机制的宝贵见解.