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相关概念视频

Ribosome Profiling02:24

Ribosome Profiling

3.6K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.6K
Proteins: From Genes to Degradation02:11

Proteins: From Genes to Degradation

12.7K
Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick.  Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
Transcription is the synthesis of RNA...
12.7K
From DNA to Protein03:06

From DNA to Protein

19.1K
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...
19.1K
Proteomics01:33

Proteomics

7.9K
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
7.9K
Protein Networks02:26

Protein Networks

4.1K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
4.1K
Prokaryotic Gene Structure and Organization01:28

Prokaryotic Gene Structure and Organization

600
Prokaryotic genomes exhibit a streamlined organization of coding and non-coding regions essential for gene expression and protein synthesis. While coding regions contain the genetic instructions for proteins or functional RNAs, non-coding regions regulate the precise transcription and translation of these genes.Coding Regions: Proteins and RNAsThe primary coding regions, known as structural genes, include sequences transcribed into messenger RNA (mRNA) and ultimately translated into...
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相关实验视频

Updated: Sep 11, 2025

Mapping Bacterial Functional Networks and Pathways in Escherichia Coli using Synthetic Genetic Arrays
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Mapping Bacterial Functional Networks and Pathways in Escherichia Coli using Synthetic Genetic Arrays

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研究由基本基因编码的蛋白质的方法.

John E Cronan1,2

  • 1Department of Microbiology, University of Illinois, Urbana, Illinois, USA.

Proteins
|August 16, 2025
PubMed
概括

研究基本基因需要有条件的突变. 温度敏感 (Ts) 突变体和降解系统使研究人员能够控制基因功能,使得研究基本蛋白质的研究成为可能.

科学领域:

  • 分子生物学分子生物学
  • 遗传学 遗传学 是一个
  • 细胞生物学 细胞生物学

背景情况:

  • 不必要的基因可以通过删除来研究,但必要的基因需要有条件的方法.
  • 绕过策略,如酶产品补充,对于参与DNA/RNA合成等核心过程的基本基因是不够的.

研究的目的:

  • 审查创建基本基因条件突变的方法.
  • 讨论各种条件基因控制策略的优缺点.

主要方法:

  • 条件突变允许细胞在允许条件下生长,但不允许条件下生长.
  • 温度敏感 (Ts) 突变体利用蛋白质对温度变化的敏感性.
  • 降解系统的目标是蛋白质,以便由细胞蛋白酶破坏.

主要成果:

  • 条件突变对于研究不能被删除的基本基因至关重要.
  • 对温度敏感的突变物是条件基因研究中广泛使用的方法.
  • 降解系统为条件蛋白质敲击提供了一个替代方案.

结论:

  • 条件突变是遗传学和分子生物学中不可或缺的工具.
  • 对温度敏感的突变物和降解系统为基本基因研究提供了有价值的方法.
关键词:
我们 degrons degrons.整体的整体是整体的蛋白质降解 蛋白质降解再组合突变发生的突变发生.对温度敏感的突变动物三自杀是自杀的方法.

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Engineering 'Golden' Fluorescence by Selective Pressure Incorporation of Non-canonical Amino Acids and Protein Analysis by Mass Spectrometry and Fluorescence

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  • 了解这些方法有助于解读关键细胞蛋白的功能.