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Antimicrob Agents Chemother. 1999 Feb;43(2):415-7.

Expression in Escherichia coli of a new multidrug efflux pump, MexXY, from Pseudomonas aeruginosa.

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  • 1Department of Microbiology, Faculty of Pharmaceutical Sciences, Okayama, Japan.

Abstract

Two new genes (mexXY) similar to mexAB, mexCD, and mexEF and mediating multidrug resistance were cloned from the chromosome of Pseudomonas aeruginosa. Elevated ethidium extrusion was observed with Escherichia coli cells harboring the plasmid carrying mexXY. This MexXY system confers higher resistance to fluoroquinolones than the MexAB and MexCD systems, and E. coli ToIC or P. aeruginosa OprM is necessary for the function of the MexXY system.

PMID:
9925549
PMCID:
PMC89094
[PubMed - indexed for MEDLINE]
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