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Small regulatory RNAs in bacteria
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Microbiology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Microbiology.
2006 (English)In: Small RNAs: Analysis and regulatory functions / [ed] Wolfgang Nellen, Christian Hammann, Berlin, Heidelberg: Springer Verlag Berlin Heidelberg , 2006, 1-29 p.Chapter in book (Other academic)
Abstract [en]

In recent years, small regulatory RNAs have been discovered at a staggering rate both in prokaryotes and eukaryotes. By now it is clear that post-transcriptional regulation of gene expression mediated by such RNAs is the rule rather than—as previously believed—the exception. In this chapter, we focus on small RNAs (sRNAs) encoded by bacterial chromosomes. The strategies for their discovery, their biological roles, and their mechanisms of action are discussed. Even though the number of well-characterized sRNAs in, for example, the best studied model enterobacterium Escherichia coli, is still small, the emerging pattern suggests that antisense mechanisms predominate. In terms of their roles in bacterial physiology, most of these RNAs appear to be involved in stress response regulation. Some other examples indicate functions in regulation of virulence. Two aspects of sRNA-mediated control arising from recent observations are addressed as well. Firstly, some sRNAs need proteins (notably Hfq) as helpers in their antisense activities—at this point the reason for this requirement is not understood. Secondly, only limited sequence complementarity is generally observed in antisense–target RNA pairs. This raises the fundamental question of how specific recognition is accomplished, and what the structure/sequence determinants for rapid and productive interaction are.

Place, publisher, year, edition, pages
Berlin, Heidelberg: Springer Verlag Berlin Heidelberg , 2006. 1-29 p.
Series
Nucleic Acids and Molecular Biology, ISSN 0933-1891 ; 17
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-142498DOI: 10.1007/3-540-28130-4ISBN: 978-3-540-28130-6 (print)OAI: oai:DiVA.org:uu-142498DiVA: diva2:387511
Available from: 2011-01-14 Created: 2011-01-14 Last updated: 2014-05-28Bibliographically approved

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Wagner, Gerhart E. H.

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