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相关概念视频

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

2.1K
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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Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

7.0K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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相关实验视频

Updated: Jun 24, 2025

Imaging Protein-protein Interactions in vivo
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Imaging Protein-protein Interactions in vivo

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高效光探测器可视化蛋白质相互作用在超分辨率.

Yuki Aono1, Takahiro Nakajima1,2, Wataru Ichimiya1

  • 1Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan.

ACS chemical biology
|June 5, 2024
PubMed
概括

研究人员开发了split-Dendra2,这是一种用于超分辨率显微镜的新型光探针. 这种工具有效地可视化了细胞中的蛋白质-蛋白质相互作用,使得纳米尺度对细胞功能的洞察力.

科学领域:

  • 细胞生物学 细胞生物学
  • 显微镜的使用方法
  • 生物化学 生物化学

背景情况:

  • 超分辨率显微镜 (SR显微镜) 对于研究亚细胞结构中的蛋白质-蛋白质相互作用 (PPI) 是至关重要的.
  • 目前用于PPI的SR显微镜技术缺乏足够的功率和实用性.
  • 了解纳米级PPI对于阐明细胞功能至关重要.

研究的目的:

  • 开发一种新型,高效的光探针,用于SR显微镜PPI.
  • 为了使PPI在小亚细胞区的高分辨率可视化.
  • 克服目前用于SR显微镜PPI的工具的局限性.

主要方法:

  • 开发一个分裂光蛋白探针,分裂-Dendra2.
  • 分裂-Dendra2用于细胞样本的SR显微镜的应用.
  • 在特定的亚细胞结构中展示PPI可视化,如克拉林涂层坑和焦点粘附.

主要成果:

  • 斯普利特-登德拉2证明了 PPI 的高效检测.
  • 实现了PPI的SR显微镜,具有高空间分辨率和图像重建保真度.
  • 在小型亚细胞结构中成功可视化了以前无法溶解的PPI.

更多相关视频

Using In Vitro Fluorescence Resonance Energy Transfer to Study the Dynamics Of Protein Complexes at a Millisecond Time Scale
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Using In Vitro Fluorescence Resonance Energy Transfer to Study the Dynamics Of Protein Complexes at a Millisecond Time Scale

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Photoactivated Localization Microscopy with Bimolecular Fluorescence Complementation BiFC-PALM
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Photoactivated Localization Microscopy with Bimolecular Fluorescence Complementation BiFC-PALM

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相关实验视频

Last Updated: Jun 24, 2025

Imaging Protein-protein Interactions in vivo
11:15

Imaging Protein-protein Interactions in vivo

Published on: October 10, 2010

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Using In Vitro Fluorescence Resonance Energy Transfer to Study the Dynamics Of Protein Complexes at a Millisecond Time Scale
10:50

Using In Vitro Fluorescence Resonance Energy Transfer to Study the Dynamics Of Protein Complexes at a Millisecond Time Scale

Published on: March 14, 2019

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Photoactivated Localization Microscopy with Bimolecular Fluorescence Complementation BiFC-PALM
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Photoactivated Localization Microscopy with Bimolecular Fluorescence Complementation BiFC-PALM

Published on: December 22, 2015

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结论:

  • 拆分-Dendra2是一个强大而有用的工具,用于SR显微镜PPI.
  • 该探头显著扩大了SR显微镜的功能.
  • 在纳米尺度分辨率上促进PPI函数的研究.