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相关概念视频

From DNA to Protein03:06

From DNA to Protein

23.9K
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...
23.9K
The Central Dogma01:25

The Central Dogma

143.8K
Overview
143.8K
The Central Dogma01:20

The Central Dogma

35.0K
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...
35.0K
Proteins: From Genes to Degradation02:11

Proteins: From Genes to Degradation

14.8K
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...
14.8K
Proteins: From Genes to Degradation02:11

Proteins: From Genes to Degradation

4.6K
4.6K
Translation01:31

Translation

159.0K
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of...
159.0K

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An emergent disease-associated motor neuron state precedes cell death in ALS.

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相关实验视频

Updated: Mar 12, 2026

Deciphering Molecular Mechanism of Histone Assembly by DNA Curtain Technique
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解码ALS:从基因到机制

J Paul Taylor1, Robert H Brown2, Don W Cleveland3,4

  • 1Howard Hughes Medical Institute and the Department of Cell and Molecular Biology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.

Nature
|November 11, 2016
PubMed
概括
此摘要是机器生成的。

肌缩侧面硬化 (ALS) 是一种致命的神经退行性疾病. 研究突出了基因因素和细胞功能障碍,

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科学领域:

  • 神经科学
  • 遗传学
  • 细胞生物学

背景情况:

  • 肌缩侧面硬化 (ALS) 是一种进展性,致命的神经退行性疾病.
  • 运动神经元退化是ALS的一个标志.
  • 遗传因素显著影响ALS的发病,易感性和进展.

研究的目的:

  • 审查目前对ALS遗传因素和细胞机制的理解.
  • 突出ALS病变的新主题.
  • 为未来的治疗发展提供乐观的基础.

主要方法:

  • 对ALS遗传因素的文献综述.
  • 分析新出现的细胞功能障碍.
  • 关于ALS中的RNA代谢和蛋白质平衡现有知识的综合.

主要成果:

  • 许多遗传因素与ALS有关.
  • 关键的细胞功能障碍包括RNA代谢和蛋白质平衡的受损.
  • 特定的缺陷包括核细胞流通,内网压力和核糖蛋白体力学.

结论:

  • 了解ALS的生物学正在迅速发展.
  • 新兴的研究指出,
  • 基础科学的进步为开发有效的ALS治疗提供了希望.