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Journal of Clinical Microbiology, August 2004, p. 3823-3826, Vol. 42, No. 8
0095-1137/04/$08.00+0     DOI: 10.1128/JCM.42.8.3823-3826.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Analysis of p51, groESL, and the Major Antigen P51 in Various Species of Neorickettsia, an Obligatory Intracellular Bacterium That Infects Trematodes and Mammals

Yasuko Rikihisa,^1* Chunbin Zhang,¹ Manuel Kanter,¹ Zhihui Cheng,¹ Norio Ohashi,^1, and Takeo Fukuda²

Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio,¹ Miyazaki Prefecture Institute for Public Health and Environment, Miyazaki, Japan²

Received 18 February 2004/ Returned for modification 11 April 2004/ Accepted 22 April 2004

The p51 gene that encodes the major antigenic 51-kDa protein in Neorickettsia risticii was identified in strains of Neorickettsia sennetsu and the Stellantchasmus falcatus agent but not in Neorickettsia helminthoeca, suggesting that p51-based diagnosis would be useful to distinguish among them. groESL sequencing results delineated the phylogenic relationships among Neorickettsia spp.

Present address: Laboratory of Environmental Microbiology, Institute of Environmental Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan.