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[Riboswitches].

Katarzyna Bugała1, Marek Zywicki, Eliza Wyszko

  • 1Institute of Bioorganic Chemistry Polish Academy of Sciences, 12 Noskowskiego St., 61-704 Poznan, Poland.

Postepy Biochemii
|October 8, 2005
PubMed
Summary
This summary is machine-generated.

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Riboswitches are RNA molecules that control gene expression by binding specific small molecules. Found across many species, their ancient origins suggest a crucial role in biological regulation.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Context:

  • Riboswitches are regulatory RNA elements found widely in bacteria, fungi, and plants.
  • They control gene expression at transcriptional and translational levels through specific small molecule binding.
  • In Bacillus subtilis, over 2% of the genome is regulated by riboswitches.

Purpose:

  • To review the known characteristics and distribution of riboswitches.
  • To highlight the specificity of metabolite binding by various identified riboswitches.
  • To explore the evolutionary significance and potential human relevance of riboswitches.

Summary:

  • Riboswitches are RNA structures that bind specific small molecules, modulating gene expression. Numerous riboswitches targeting metabolites like flavin mononucleotide, thiamine, and amino acids have been identified.

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  • These regulatory elements are prevalent in bacteria, with some found in eukaryotes like fungi and plants.
  • While only one human riboswitch (binding 2-aminopurine) is known, their ancient evolutionary origin suggests broader regulatory roles.

    • Impact:

    • Understanding riboswitches provides insights into fundamental gene regulation mechanisms.
    • The specificity of riboswitches offers potential for targeted therapeutic or biotechnological applications.
    • The ancient nature of riboswitches raises questions about their role in human gene regulation and disease.