Journal
JOURNAL OF BACTERIOLOGY
Volume 188, Issue 18, Pages 6700-6702Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.00584-06
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Pseudomonas aeruginosa PAO1 is repelled by trichloroethylene (TCE), and the methyl-accepting chemotaxis proteins PctA, PctB, and PctC serve as the major chemoreceptors for negative chemotaxis to TCE. In this study, we found that the pctABC triple mutant of P. aeruginosa PAO1 was attracted by TCE. Chemotaxis assays of a set of mutants containing deletions in 26 potential mep genes revealed that mepA (PA0180) is the chemoreceptor for positive chemotaxis to TCE. McpA also detects tetrachloroethylene and dichloroethylene isomers as attractants.
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