| Literature DB >> 28193669 |
Yi-Wei Huang1, Cheng-Wen Lin2, Hsiao-Chen Ning3,4, Yi-Tsung Lin5,6, Yi-Chih Chang7, Tsuey-Ching Yang8.
Abstract
The SmeDEF pump of Stenotrophomonas maltophilia is negatively regulated by SmeT. In this study, strains KJΔT (smeT deletion mutant) and KJT-Dm (mutant with a defective SmeT-binding site) showed increased resistance to chloramphenicol/nalidixic acid/macrolides and susceptibility to aminoglycoside. Overexpression of the SmeDEF pump, in either KJΔT or KJT-Dm, downregulated smeYZ expression, which is responsible for the reduced aminoglycoside resistance. Furthermore, the SmeRySy two-component regulatory system was downregulated in response to SmeDEF overexpression, which supports its involvement in the regulatory circuit.Entities:
Keywords: antibiotic resistance; bacteria; efflux pump; two-component regulatory system
Mesh:
Substances:
Year: 2017 PMID: 28193669 PMCID: PMC5404512 DOI: 10.1128/AAC.02685-16
Source DB: PubMed Journal: Antimicrob Agents Chemother ISSN: 0066-4804 Impact factor: 5.191