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Applied and Environmental Microbiology, June 2006, p. 4455-4460, Vol. 72, No. 6
0099-2240/06/$08.00+0     doi:10.1128/AEM.02095-05
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Identification of a DNA Methyltransferase Gene Carried on a Pathogenicity Island-Like Element (VPAI) in Vibrio parahaemolyticus and Its Prevalence among Clinical and Environmental Isolates

Hui-zhen Wang, Minnie M. L. Wong, Desmond O'Toole, Mandy M. H. Mak, Rudolf S. S. Wu, and Richard Y. C. Kong*

Department of Biology and Chemistry and Research Centre for Coastal Pollution and Conservation, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong Special Administrative Region, People's Republic of China

Received 6 September 2005/ Accepted 29 March 2006

In this study we identified a putative virulence-associated DNA methyltransferase (MTase) gene carried on a novel 22.79-kb pathogenicity island-like element (VPAI) in V. parahaemolyticus. The V. parahaemolyticus MTase gene was shown by PCR to be prevalent (>98%) in pandemic thermostable direct hemolysin gene-positive isolates, which suggests that VPAI may confer unique virulence traits to pandemic strains of V. parahaemolyticus.

* Corresponding author. Mailing address: Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong SAR, China. Phone: 852-2788-7794. Fax: 852-2788-7406. E-mail: bhrkong{at}cityu.edu.hk.

Applied and Environmental Microbiology, June 2006, p. 4455-4460, Vol. 72, No. 6
0099-2240/06/$08.00+0     doi:10.1128/AEM.02095-05
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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