| Literature DB >> 16377706 |
Shaohui Yin1, Robert S Daum, Susan Boyle-Vavra.
Abstract
The VraS/VraR two-component system (VraSR) regulates transcriptional induction of penicillin-binding protein 2 (encoded by pbp2) by vancomycin in Staphylococcus aureus. We have now defined the vraSR operon and determined that its induction by beta-lactams as well as by vancomycin is autoregulated. Induction of the pbp2 and vraSR operons by beta-lactams and related compounds within 1 hour after exposure to the antimicrobials was dependent on vraS. However, when a disk diffusion assay that can detect induction of genes over an extended time period was used, induction of the pbp2 operon was mediated by some beta-lactams, including oxacillin; this induction was independent of vraS.Entities:
Mesh:
Substances:
Year: 2006 PMID: 16377706 PMCID: PMC1346790 DOI: 10.1128/AAC.50.1.336-343.2006
Source DB: PubMed Journal: Antimicrob Agents Chemother ISSN: 0066-4804 Impact factor: 5.191