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Lost in translation: the influence of ribosomes on bacterial mRNA decay

Atilio Deana1, Joel G Belasco

  • 1Skirball Institute of Biomolecular Medicine and Department of Microbiology, New York University School of Medicine, New York, New York 10016, USA.

Genes & Development
|November 3, 2005
PubMed

Insights

Bacterial messenger RNA (mRNA) stability is controlled by ribosomes during translation. Ribosomes protect mRNA from degradation but can also trigger its decay, ensuring only functional proteins are produced.

Area of Science:

  • Molecular Biology
  • Bacterial Genetics
  • Gene Expression Regulation

Background:

  • Bacterial mRNA lifetimes are crucial for regulating gene expression.
  • Ribosomes play a complex role in mRNA stability, acting as both protectors and triggers of decay.
  • Understanding mRNA decay pathways is essential for bacterial physiology.

Purpose of the Study:

  • To investigate the intricate relationship between translation and bacterial mRNA decay.
  • To elucidate how ribosomal activity influences mRNA susceptibility to nucleases.
  • To highlight the role of translation in bacterial mRNA quality control.

Main Methods:

  • Analysis of mRNA decay rates under various translational conditions.
  • Investigating the impact of ribosome binding, elongation, and termination on mRNA stability.
  • Studying the signaling mechanisms by which ribosomes can induce mRNA destabilization.

Main Results:

  • Ribosome association significantly impacts bacterial mRNA lifetimes.
  • Translational events, including initiation, elongation, and termination, modulate mRNA decay.
  • Ribosomes can either protect mRNA from degradation or actively promote its destabilization.

Conclusions:

  • Translation is a key determinant of bacterial mRNA stability.
  • Ribosome-mediated mRNA decay acts as a critical quality control mechanism.
  • This process prevents the production of potentially toxic aberrant proteins in bacteria.

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