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Initiation of Translation02:33

Initiation of Translation

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Initiation of Translation02:33

Initiation of Translation

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Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are all required to assemble on the initiation codon of mRNA. This process consists of several steps that are mediated by different eIFs.
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
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Translation01:31

Translation

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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...
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Translation01:31

Translation

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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 Life
Proteins are...
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Translation01:31

Translation

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Translation01:31

Translation

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相关实验视频

Updated: Apr 20, 2026

Xenopus laevis as a Model to Identify Translation Impairment
10:24

Xenopus laevis as a Model to Identify Translation Impairment

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对翻译启动进行更深入的研究.

Andrei A Korostelev1

  • 1RNA Therapeutics Institute, Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, 368 Plantation Street, Worcester, MA 01605, USA.

Cell
|November 24, 2014
PubMed
概括

细胞翻译启动包括在小核糖体子单元上组装因子,以找到mRNA启动编码子. 新的研究揭示了这一关键细胞过程的早期和晚期阶段的关键见解.

科学领域:

  • 分子生物学分子生物学
  • 细胞生物学 细胞生物学
  • 生物化学 生物化学

背景情况:

  • 单核细胞的翻译启动是一个复杂的过程.
  • 它需要多个蛋白质因子的组合.
  • 准确的起始密码子选择对于蛋白质合成至关重要.

研究的目的:

  • 为了提供对真核细胞翻译启动的新见解.
  • 检查早期和晚期启动的中间产品.
  • 阐明启动密码子选择的机制.

主要方法:

  • 早期翻译启动中间件的分析.
  • 调查迟到的翻译启动中间件.
  • 启动因子的结构和功能研究.

主要成果:

  • 早期启动复合体的详细表征.
  • 在晚期发起的中间体中阐明形状变化.
  • 确定特定启动因素的关键作用.

结论:

  • 对真核细胞翻译启动途径的新理解.

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  • 了解翻译机械的动态组装.
  • 为了解mRNA启动密码子选择机制做出贡献.