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相关概念视频

FISH - Fluorescent In-situ Hybridization02:07

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Fluorescence in situ hybridization, or FISH, was developed in the early 1980s and has quickly become one of the most widely used techniques in cytogenetics. Labeled probes are used to bind complementary DNA or RNA sequences on a chromosome or in a region within a cell. Earlier, the probes could only be obtained by cloning or reverse transcription of a DNA template. Currently, the probe oligonucleotides can be synthesized synthetically. Additionally, with the advancement of optical techniques,...
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Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
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对于非光转换的化链接集成 (FLINT)

Bishal Pokhrel1, Fatiha Farhana1, Li Zuo1

  • 1Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242, United States.

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概括
此摘要是机器生成的。

非化转换的化联结集成 (FLINT) 方法使非化反应的单分子成像成为可能. 该方法追踪以前看不见的催化过程,推进化学动力学和催化研究.

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科学领域:

  • 化学动力学 化学动力学
  • 单个分子成像技术
  • 催化剂是一种催化剂.

背景情况:

  • 单分子光学成像通常需要化反应.
  • 在单个分子水平上研究非化反应具有挑战性.
  • 现有的方法限制了可观察到的催化过程的范围.

研究的目的:

  • 开发一种用于单个分子水平的非化反应的新型成像方法.
  • 在单分子催化研究中克服化探针的局限性.
  • 为了使以前无法观察到的反应能够进行高分辨率的动力分析.

主要方法:

  • 开发了用于非光转换的化链接集成 (FLINT) 方法.
  • 采用了一种级联反应:非化葡萄糖氧化与化Amplex Red相结合,转化为Resorufin.
  • 采用单分子周转时间分析,循环电压测量和光谱学.

主要成果:

  • 成功监测了单次翻转事件,并提取了非原性葡萄糖氧化的动力参数.
  • 证明了FLINT能够区分相结合步骤的反应动力学的能力.
  • 通过比较金纳米颗粒,金纳米棒和冠酶的催化性能来验证FLINT.
  • 评估了d-和l-葡萄糖对冠状酶的性选择性.

结论:

  • FLINT是一种强大的技术,用于对非化反应的单分子成像.
  • 这种方法为动力分析提供了高时空分辨率.
  • 弗林特在研究反选择性反应和促进催化研究方面具有潜在的应用.