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Journal of Bacteriology, September 2006, p. 6429-6434, Vol. 188, No. 17
0021-9193/06/$08.00+0     doi:10.1128/JB.00484-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Positive Selection in the ComC-ComD System of Streptococcal Species

Hisako Ichihara,1* Kei-ichi Kuma,1 and Hiroyuki Toh2

Bioinformatics Center, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan,1 Division of Bioinformatics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan2

Received 6 April 2006/ Accepted 12 June 2006

Competence-stimulating peptide (CSP) and ComD of the streptococcal species are a pheromone and its receptor, respectively, involved in the regulation of competence for natural genetic transformation. We show here that these molecules have undergone positive selection. This study is the first report of positive selection due to competition among bacterial populations.

* Corresponding author. Mailing address: Bioinformatics Center, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan. Phone: 81-774-38-3093. Fax: 81-774-38-3059. E-mail: ichihara{at}kuicr.kyoto-u.ac.jp.

Journal of Bacteriology, September 2006, p. 6429-6434, Vol. 188, No. 17
0021-9193/06/$08.00+0     doi:10.1128/JB.00484-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.





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