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Related Experiment Videos

Transfer-RNA, an early gene?

M Eigen, R Winkler-Oswatitsch

    Die Naturwissenschaften
    |June 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Early translation likely began with specific RNA molecules acting as both messengers and adaptors. Research suggests transfer RNA (tRNA) precursors were the earliest components of this crucial molecular machinery.

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    Area of Science:

    • Origin of Life studies
    • Molecular Evolution
    • Biochemistry

    Background:

    • Self-reproductive molecular systems theory posits specific requirements for early translation.
    • Early RNA molecules likely possessed unique structural and functional properties.

    Purpose of the Study:

    • To investigate the characteristics of early RNA molecules involved in translation.
    • To determine the earliest component of the molecular translation machinery.

    Main Methods:

    • Analysis of theoretical requirements for self-reproductive molecular systems.
    • Reconstruction of transfer RNA (tRNA) precursors.
    • Examination of codon patterns in reconstructed molecules.

    Main Results:

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  • Early translation likely involved GC-rich RNA sequences under 100 nucleotides.
  • These RNA molecules may have served dual roles as messengers and adaptors.
  • Reconstructed tRNA precursors exhibited a GNC codon pattern.

    • Conclusions:

    • Transfer RNA (tRNA) is suggested to be the earliest component of the translation machinery.
    • The findings support a model where specific RNA distributions initiated molecular translation.