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Int J Syst Evol Microbiol 54 (2004), 413-417; DOI  10.1099/ijs.0.02653-0
© 2004 International Union of Microbiological Societies

Anaerotruncus colihominis gen. nov., sp. nov., from human faeces

Paul A. Lawson1, Yuli Song2, Chengxu Liu2, Denise R. Molitoris2, Marja-Liisa Vaisanen2, Matthew D. Collins1 and Sydney M. Finegold3,4,5

1 School of Biosciences, University of Reading, UK
2 Research Service, VA Medical Center West Los Angeles, LA, USA
3 Infectious Diseases Section, VA Medical Center West Los Angeles, LA, USA
4 Department of Medicine, UCLA School of Medicine, USA
5 Department of Microbiology, Immunology and Molecular Genetics, UCLA School of Medicine, USA

Correspondence
Sydney M. Finegold
sidfinegol{at}aol.com

Phenotypic and phylogenetic studies were performed on two isolates of an unidentified Gram-positive, anaerobic, non-spore-forming, rod-shaped bacterium that was isolated from human faeces. The organisms were catalase-negative, produced acetic and butyric acids as end products of metabolism and possessed a DNA G+C content of approximately 54 mol%. Comparative 16S rRNA gene sequencing demonstrated that the two isolates were related closely to each other and formed a hitherto unknown sublineage within the Clostridium leptum rRNA cluster of organisms. Based on phylogenetic and phenotypic evidence, it is proposed that the unknown bacterium should be classified in a novel genus as Anaerotruncus colihominis gen. nov., sp. nov. The type strain of Anaerotruncus colihominis is WAL 14565T=CCUG 45055T=CIP 107754T.

Abbreviations: CCUG, Culture Collection of the University of Göteborg; CIP, Collection de I'Institut Pasteur; WAL, Wadsworth Anaerobic Laboratory

Published online ahead of print on 29 August 2003 as DOI 10.1099/ijs.0.02653-0.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain WAL 14565T is AJ315980.




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