Journal
FEBS LETTERS
Volume 514, Issue 1, Pages 17-25Publisher
WILEY
DOI: 10.1016/S0014-5793(02)02305-0
Keywords
function; guide RNA; snoRNA; archaeon; eukaryon; eubacterium
Funding
- NIGMS NIH HHS [GM58879] Funding Source: Medline
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Pseudouridines are found in virtually all ribosomal RNAs but their function is unknown. There are four to eight times more pseudouridines in eukaryotes than in eubacteria. Mapping 19 Haloarcula marismortui pseudouridines on the three-dimensional 50S subunit does not show clustering. In bacteria, specific enzymes choose the site of pseudouridine formation. In eukaryotes, and probably also in archaea, selection and modification is done by a guide RNA-protein complex. No unique specific role for ribosomal pseudouridines has been identified. We propose that pseudouridine's function is as a molecular glue to stabilize required RNA conformations that would otherwise be too flexible. (C) 2002 Published by Elsevier Science B.V. on behalf of the Federation of European Biochemical Societies.
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