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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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同型光核化物同型光核化物

Yitzhak Tor1

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此摘要是机器生成的。

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科学领域:

  • 核酸的光物理和生物物理.
  • 化学生物学和合成化学

背景情况:

  • 托芬的光使蛋白质研究发生了革命,但RNA和DNA中的正规核基具有低排放,阻碍了光应用.
  • 开发内在发射的核酸替代物对于实时核酸转换的核基解像度监测至关重要.

研究的目的:

  • 设计和合成核酸的异形和异功能发射核酸替代物.
  • 为了实现核酸结构,功能和酶变化的基于光的实时监测.

主要方法:

  • 引入了最小的原子/结构干扰,以创建具有有利光物理性质的合成核糖类相应物.
  • 开发了提[3,4-d]胺和异亚[4,3-d]胺核,以制造光纯氨酸和胺类型.
  • 作为各种酶的基质测试了类似物,包括聚合酶,代谢酶以及参与辅因子/辅酶合成的酶.

主要成果:

  • 创建的光核糖核糖体字母 (纯氨酸和氨酸类型) 保持原生形状和配对.
  • 证明了发射模拟物作为酶基质的实用性,使得对酶活性和抑制剂发现的实时光测试成为可能.
  • 合成了发射共因子,共酶和第二信使,允许实时监测它们的生物合成和转化.

结论:

  • 可以制造和实施高度同型和异功能发射核糖替代物,用于各种生物化学研究.
  • 这些探头为核酸生物化学提供了光学窗口,补充了像2-aminopurine这样的既定方法.
  • 未来的工作重点是通过先进的光谱学和结构修改来克服辐射波长和亮度的限制.