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Related Experiment Videos

Artificial evolution and natural ribozymes

P K Kumar1, A D Ellington

  • 1National Institute of Bioscience and Human Technology, MITI, AIST Center, Ibaraki, Japan.

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
|September 1, 1995
PubMed
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In vitro selection reveals diverse catalytic RNA structures and functions, offering insights into natural selection and the RNA world hypothesis for early metabolism.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Evolutionary Biology

Background:

  • Natural ribozymes like hammerhead viroids and group I introns have defined structures and functions.
  • In vitro selection is a powerful tool for studying catalytic RNA.

Purpose of the Study:

  • To explore the sequence, structure, and function of natural ribozymes using in vitro selection.
  • To understand the evolutionary pathways of catalytic RNAs.
  • To investigate the role of RNA in early metabolism.

Main Methods:

  • In vitro selection experiments were performed on natural ribozymes.
  • Artificial evolution was used to probe RNA capabilities.

Main Results:

  • A wide variety of alternative structures and functions were identified for catalytic RNAs.

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  • These findings provide insights into the fixation of specific RNA sequences and mechanisms during natural selection.

    • Conclusions:

    • In vitro selection expands our understanding of ribozyme potential.
    • The diversity of laboratory-evolved ribozymes supports the RNA world hypothesis for the origin of metabolism.