| Literature DB >> 19223635 |
Bettina Schulthess1, Stefan Meier, Dagmar Homerova, Christiane Goerke, Christiane Wolz, Jan Kormanec, Brigitte Berger-Bächi, Markus Bischoff.
Abstract
The alternative sigma factor sigma(B) of Staphylococcus aureus controls the expression of multiple genes, including virulence determinants and global regulators; promotes capsule production; and increases the resistance levels of methicillin-resistant S. aureus (MRSA) and glycopeptide-intermediate-resistant S. aureus (GISA) strains. We show here that deletion of the sigma(B)-controlled yabJ-spoVG operon, which codes for potential downstream regulators of sigma(B), abolished capsule synthesis and reduced resistance in MRSA and GISA to the same extent that sigma(B) inactivation did. Introduction of the yabJ-spoVG operon in trans restored the original phenotype. By genetic manipulations, we show that SpoVG but not YabJ is required for complementation. We therefore postulate that SpoVG is the major factor of the yabJ-spoVG operon required in S. aureus for capsule formation and antibiotic resistance.Entities:
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Year: 2009 PMID: 19223635 PMCID: PMC2681525 DOI: 10.1128/AAC.01255-08
Source DB: PubMed Journal: Antimicrob Agents Chemother ISSN: 0066-4804 Impact factor: 5.191