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DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
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Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and tissues. The procedure provides insights into the distribution and quantification of protein under different stimulation conditions offering clues about their functions. Conjugating highly electron-dense gold particles with primary or secondary antibodies allow antigen detection on and within cells, with high resolution and specificity.
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相关实验视频

Updated: Jun 21, 2025

Microfluidic On-chip Capture-cycloaddition Reaction to Reversibly Immobilize Small Molecules or Multi-component Structures for Biosensor Applications
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相互直角的生物直角反应:选择性化学方法,同时标记多个生物分子.

Kevin R Venrooij1, Lucienne de Bondt1, Kimberly M Bonger2

  • 1Chemical Biology Group, Department of Synthetic Organic Chemistry, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands.

Topics in current chemistry (Cham)
|July 6, 2024
PubMed
概括

生物直角点击化学使复杂的生物结合物合成和生物分子操纵成为可能. 本综述探讨了先进的生物标签应用的同时直角点击反应.

关键词:
生物结合的生物结合化学生物学 化学生物学点击"化学"就可以了.在体内化学 in vivo 化学蛋白质工程是指蛋白质工程.

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科学领域:

  • 生物对等化学的化学.
  • 化学生物学是化学生物学.
  • 生物结合的生物结合

背景情况:

  • 生物直角点击化学对于创建复杂的生物结合物至关重要.
  • 它促进生物分子可视化和活体系统中的操纵.
  • 应用范围包括生物工程和药物输送.

研究的目的:

  • 为了回顾常见的生物对等反应.
  • 讨论实现同时直角点击化学的策略.
  • 为了突出标签的相互直角化学的例子.

主要方法:

  • 对生物对等反应现有文献的综述.
  • 对反应机制,电子和硬质性质的分析.
  • 举例汇编,证明正交反应的使用.

主要成果:

  • 确定适用于正交使用的关键生物正交反应.
  • 展示实现反应直角性的策略.
  • 介绍了生物分子同时标记的最新进展.

结论:

  • 同时的直角点击反应对于复杂的生物系统是必不可少的.
  • 了解反应机制和调特性是正交度的关键.
  • 精心选择化学成分对于有效的生物分子标签至关重要.