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Functional characterization of the sigmaB-dependent yabJ-spoVG operon in Staphylococcus aureus: role in methicillin and glycopeptide resistance


Schulthess, B; Meier, S; Homerova, D; Goerke, C; Wolz, C; Kormanec, J; Berger-Bächi, B; Bischoff, M (2009). Functional characterization of the sigmaB-dependent yabJ-spoVG operon in Staphylococcus aureus: role in methicillin and glycopeptide resistance. Antimicrobial Agents and Chemotherapy, 53(5):1832-1839.

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.

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.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Medical Microbiology
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:English
Date:2009
Deposited On:28 Jul 2009 09:31
Last Modified:05 Apr 2016 13:18
Publisher:American Society for Microbiology
ISSN:0066-4804
Additional Information:Copyright: American Society for Microbiology
Publisher DOI:https://doi.org/10.1128/AAC.01255-08
PubMed ID:19223635
Permanent URL: https://doi.org/10.5167/uzh-19892

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