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Journal of Bacteriology, September 2006, p. 6700-6702, Vol. 188, No. 18
0021-9193/06/$08.00+0     doi:10.1128/JB.00584-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Identification and Characterization of the Chemotactic Transducer in Pseudomonas aeruginosa PAO1 for Positive Chemotaxis to Trichloroethylene

Hye-Eun Kim,1 Maiko Shitashiro,1 Akio Kuroda,1 Noboru Takiguchi,1 Hisao Ohtake,2 and Junichi Kato1*

Department of Molecular Biotechnology, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8530,1 Department of Biotechnology, Osaka University, Suita, Osaka 565-0871, Japan2

Received 25 April 2006/ Accepted 29 June 2006

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 mcp genes revealed that mcpA (PA0180) is the chemoreceptor for positive chemotaxis to TCE. McpA also detects tetrachloroethylene and dichloroethylene isomers as attractants.

* Corresponding author. Mailing address: Department of Molecular Biotechnology, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8530, Japan. Phone: 81 82 424 7757. Fax: 81 82 424 7047. E-mail: jun{at}hiroshima-u.ac.jp.

Journal of Bacteriology, September 2006, p. 6700-6702, Vol. 188, No. 18
0021-9193/06/$08.00+0     doi:10.1128/JB.00584-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

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  • Alvarez-Ortega, C., Harwood, C. S. (2007). Identification of a Malate Chemoreceptor in Pseudomonas aeruginosa by Screening for Chemotaxis Defects in an Energy Taxis-Deficient Mutant. Appl. Environ. Microbiol. 73: 7793-7795 [Abstract] [Full Text]  


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