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RNA editing.

A Brennicke1, A Marchfelder, S Binder

  • 1Universität Ulm, Germany. axel.brennicke@biologie.uni-ulm.de

FEMS Microbiology Reviews
|June 17, 1999
PubMed
Summary
This summary is machine-generated.

RNA editing alters RNA molecule information, affecting tRNAs, rRNAs, and mRNAs in eukaryotes. This molecular process, involving nucleoside modifications and nucleotide additions, changes protein sequences from their DNA blueprint.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • RNA editing involves altering the informational content of RNA molecules.
  • Changes have been documented in transfer RNA (tRNA), ribosomal RNA (rRNA), and messenger RNA (mRNA) within eukaryotes.
  • RNA editing is not yet confirmed in prokaryotes, but its presence is anticipated.

Purpose of the Study:

  • To provide a comprehensive overview of RNA editing processes.
  • To discuss the diversity of RNA editing mechanisms and their occurrence across different cellular compartments.
  • To highlight the evolutionary context and implications of RNA editing.

Main Methods:

  • Review of existing literature on RNA editing.
  • Analysis of reported RNA editing mechanisms, including nucleoside modifications (e.g., C to U, A to I deaminations) and nucleotide additions/insertions.

Related Experiment Videos

  • Examination of the occurrence of RNA editing in various biological contexts (nucleus, mitochondria, plastids).

    • Main Results:

    • RNA editing is a widespread phenomenon in eukaryotes, occurring in the nucleus, mitochondria, and plastids.
    • Mechanisms include specific nucleoside deaminations (C to U, A to I) and insertions/additions.
    • RNA editing in mRNA can lead to altered amino acid sequences in the resulting proteins compared to the genomic DNA sequence.

    Conclusions:

    • RNA editing represents a significant layer of post-transcriptional gene regulation.
    • The diversity of mechanisms suggests independent evolutionary origins for many RNA editing processes.
    • Further research may uncover RNA editing in prokaryotes, expanding our understanding of this fundamental molecular process.