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相关概念视频

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

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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相关实验视频

Updated: Jul 15, 2026

High Precision FRET at Single-molecule Level for Biomolecule Structure Determination
11:24

High Precision FRET at Single-molecule Level for Biomolecule Structure Determination

Published on: May 13, 2017

生物分子的抑制试验基于量子点和金纳米粒子之间的光共振能量转移 (FRET).

Eunkeu Oh1, Mi-Young Hong, Dohoon Lee

  • 1Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejon 305-701, Korea.

Journal of the American Chemical Society
|March 10, 2005
PubMed
概括

一种新的测定方法使用量子点 (QD) 和金纳米粒子 (AuNPs) 来检测抑制生物分子相互作用的分子. 这种基于FRET的方法为药物发现和查提供了敏感的定量分析.

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相关实验视频

Last Updated: Jul 15, 2026

High Precision FRET at Single-molecule Level for Biomolecule Structure Determination
11:24

High Precision FRET at Single-molecule Level for Biomolecule Structure Determination

Published on: May 13, 2017

Assessing Protein Interactions in Live-Cells with FRET-Sensitized Emission
09:15

Assessing Protein Interactions in Live-Cells with FRET-Sensitized Emission

Published on: April 22, 2021

Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis
08:07

Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis

Published on: July 6, 2021

科学领域:

  • 纳米技术 纳米技术
  • 生物化学 生物化学
  • 测试开发 测试开发

背景情况:

  • 在生物过程中,特定的生物分子相互作用至关重要.
  • 开发敏感的方法来检测这些相互作用的抑制剂对于研究和药物发现至关重要.

研究的目的:

  • 开发一种用于检测抑制生物分子相互作用的分子的新型试验.
  • 在量子点 (QD) 和金纳米粒子 (AuNP) 之间利用弗斯特共振能量转移 (FRET) 来进行传感.

主要方法:

  • 黄金纳米颗粒 (AuNPs) 的功能化与n-alkanethiols和多胺胺 (G1 PAMAM) 树突.
  • 采用链丁-生物素系统作为生物分子相互作用的模型.
  • 测量由于AuNPs导致的QDs光发光 (PL) 灭的变化,以量化抑制剂.

主要成果:

  • 该试验证明了基于抑制剂存在的FRET效率的调节.
  • 阿维丁被定量分析为一种抑制剂,检测极限约为10nM.
  • 该系统对生物分子相互作用的变化表现出敏感性.

结论:

  • 一个使用QDs和AuNPs的基于FRET的试验成功地开发出来.
  • 该试验可以通过检测PL火的变化来进行抑制剂的定量分析.
  • 这种传感系统有可能对抑制特定生物分子相互作用的分子进行高通量选.