Translation of RNAIII, the Staphylococcus aureus agr regulatory RNA molecule, can be activated by a 3'-end deletion |
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Authors: | Naomi Balaban Richard P. Novick |
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Affiliation: | California Regional Primate Research Center, 98 County Road and Hutchison Dritte, University of California, Davis, CA 95616, USA; The Skirball Institute, Molecular Pathogenesis, NYU Medical Center, 550 First Ave., New York, NY 10016, USA |
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Abstract: | Abstract RNAIII, an RNA molecule shown to encode δ-hemolysin and independently to regulate toxin synthesis in Staphylococcus aureus , is transcribed at the mid-exponential phase of growth, while its target genes are activated 2 h later, at the post-exponential phase of growth. We show here that the translation of RNAIII to the 26-amino acid peptide δ-hemolysin is delayed by 1 h, and that this delay is abolished when the 3'-end of this molecule is deleted. We suggest that structural changes of RNAIII to a translatable form of the molecule precede its regulation of target gene expression. |
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Keywords: | Staphylococcus aureus agr Bacterial virulence Global regulon RNAIII |
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