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相关概念视频

The Central Dogma01:25

The Central Dogma

Overview
From DNA to Protein03:06

From DNA to Protein

The flow of genetic information in cells from DNA to mRNA to protein is described by the central dogma, which states that genes specify the sequence of mRNAs, which in turn specify the sequence of amino acids making up all proteins. The decoding of one molecule to another is performed by specific proteins and RNAs. Because the information stored in DNA is so central to cellular function, it makes intuitive sense that the cell would make mRNA copies of this information for protein synthesis...
The Central Dogma01:25

The Central Dogma

Overview
Nucleic Acids02:43

Nucleic Acids

Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
The Central Dogma01:20

The Central Dogma

The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
The Central Dogma01:20

The Central Dogma

The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...

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相关实验视频

Updated: May 7, 2026

Genetic Barcoding with Fluorescent Proteins for Multiplexed Applications
13:14

Genetic Barcoding with Fluorescent Proteins for Multiplexed Applications

Published on: April 14, 2015

一种基因编码的光氨基酸.

Jiangyun Wang1, Jianming Xie, Peter G Schultz

  • 1Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.

Journal of the American Chemical Society
|July 6, 2006
PubMed
概括

研究人员在E. coli中遗传编码了光氨基酸. 这种新型的探测器可用于研究蛋白质定位,构造和相互作用.

科学领域:

  • 生物化学 生物化学
  • 分子生物学分子生物学
  • 生物物理学的生物物理.

背景情况:

  • 基因编码的光氨基酸为研究生物系统提供了强大的工具.
  • 不自然氨基酸的特定合使得蛋白质功能的详细研究成为可能.
  • 珀色TAG编码子是广泛用于非正规氨基酸结合的系统.

研究的目的:

  • 在大肠杆菌中遗传编码光氨基酸l-(7-hydroxycoumarin-4-yl) ethylglycine (1) 在E. coli中.
  • 评估这种新型光氨基酸作为生物系统中的探针的实用性.

主要方法:

  • 利用珀TAG编码子系统进行光氨基酸的特定部位内置.
  • 在非自然氨基酸的存在下生长了工程化大肠杆菌菌株.
  • 描述了加入的氨基酸的光特性.

主要成果:

  • 在大肠杆菌中成功地转基因编码了l-(7-hydroxycoumarin-4-yl) ethylglycine (1).
  • 结合的氨基酸表现出高光量子产量和大的斯托克转移.
  • 光对pH和极性等环境因素敏感.

结论:

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Optical Control of a Neuronal Protein Using a Genetically Encoded Unnatural Amino Acid in Neurons
08:20

Optical Control of a Neuronal Protein Using a Genetically Encoded Unnatural Amino Acid in Neurons

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Optimizing the Genetic Incorporation of Chemical Probes into GPCRs for Photo-crosslinking Mapping and Bioorthogonal Chemistry in Live Mammalian Cells
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Optimizing the Genetic Incorporation of Chemical Probes into GPCRs for Photo-crosslinking Mapping and Bioorthogonal Chemistry in Live Mammalian Cells

Published on: April 9, 2018

  • 基因编码的光氨基酸l-(7-hydroxycoumarin-4-yl) ethylglycine (1) 是一个有价值的新工具.
  • 它的特性使其适合于探测蛋白质定位,贩运,形状和相互作用.