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Related Concept Videos

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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Related Experiment Video

Updated: Apr 1, 2026

Xenopus laevis as a Model to Identify Translation Impairment
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Translation Initiation.

Yves Mechulam, Sylvain Blanquet, Emmanuelle Schmitt

    Ecosal Plus
    |October 8, 2015
    PubMed
    Summary

    Accurate start codon selection is vital for protein synthesis. Recent studies reveal how initiation factors and initiator tRNA ensure the correct start codon is chosen during ribosome assembly in bacteria.

    Area of Science:

    • Molecular Biology
    • Genetics
    • Biochemistry

    Background:

    • Faithful translation initiation is crucial for cellular function.
    • Ribosome assembly and start codon recognition are complex processes.
    • The roles of initiation factors and initiator tRNA are critical but not fully elucidated.

    Purpose of the Study:

    • To summarize recent advances in understanding bacterial translation initiation.
    • To detail the molecular mechanisms of start codon selection.
    • To highlight the roles of initiation factors and initiator tRNA.

    Main Methods:

    • Structural analyses of ribosomal subunit complexes.
    • Kinetic studies of translation initiation.
    • Molecular-level investigations of protein synthesis.

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    Author Spotlight: Advancing Techniques and Discoveries in Protein Synthesis and Assembly Through Innovative Mitochondrial Research
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    Toeprinting Analysis of Translation Initiation Complex Formation on Mammalian mRNAs
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    Author Spotlight: Advancing Techniques and Discoveries in Protein Synthesis and Assembly Through Innovative Mitochondrial Research
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    Main Results:

    • Detailed molecular mechanisms of ribosome assembly and start codon recognition.
    • Elucidation of the sequential events in translation initiation.
    • Insight into the specific contributions of initiation factors and initiator tRNA.

    Conclusions:

    • Recent structural and kinetic studies have significantly advanced our understanding of bacterial translation initiation.
    • The process involves precise coordination between ribosomal subunits, initiation factors, and initiator tRNA.
    • Faithful start codon selection is achieved through a complex, multi-step mechanism.