Riboswitches: the oldest mechanism for the regulation of gene expression?

Alexey Vitreschak 1 Dmitry Rodionov Andrey Mironov Mikhail Gelfand
1 ADAGE - Applying discrete algorithms to genomics
INRIA Lorraine, LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
Abstract : Riboswitches are structures that form in mRNA and regulate gene expression in bacteria. Unlike other known RNA regulatory structures, they are directly bound by small ligands. The mechanism by which gene expression is regulated involves the formation of alternative structures that, in the repressing conformation, cause premature termination of transcription or inhibition of translation initiation. Riboswitches regulate several metabolic pathways including the biosynthesis of vitamins (e.g. riboflavin, thiamin and cobalamin) and the metabolism of methionine, lysine and purines. Candidate riboswitches have also been observed in archaea and eukaryotes. The taxonomic diversity of genomes containing riboswitches and the diversity of molecular mechanisms of regulation, in addition to the fact that direct interaction of riboswitches with their effectors does not require additional factors, suggest that riboswitches represent one of the oldest regulatory systems
Type de document :
Article dans une revue
Trends in Genetics, Elsevier, 2004, 20 (1), pp.44-50
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Soumis le : mardi 26 septembre 2006 - 10:14:39
Dernière modification le : jeudi 11 janvier 2018 - 06:19:48


  • HAL Id : inria-00100148, version 1



Alexey Vitreschak, Dmitry Rodionov, Andrey Mironov, Mikhail Gelfand. Riboswitches: the oldest mechanism for the regulation of gene expression?. Trends in Genetics, Elsevier, 2004, 20 (1), pp.44-50. 〈inria-00100148〉



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