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Int J Syst Evol Microbiol 59 (2009), 1541-1544; DOI  10.1099/ijs.0.005959-0
© 2009 International Union of Microbiological Societies

Tsukamurella carboxydivorans sp. nov., a carbon monoxide-oxidizing actinomycete

Sae W. Park, Sung M. Kim, Sang T. Park{dagger} and Young M. Kim

Molecular Microbiology Laboratory, Department of Biology, Yonsei University, Seoul 120-749, Republic of Korea

Correspondence
Young M. Kim
young547{at}yonsei.ac.kr

A Gram-positive, slightly acid–alcohol-fast, carbon monoxide-oxidizing bacterium, strain Y2T, was isolated from a soil sample collected from a roadside in Seoul, Korea. On the basis of 16S rRNA gene sequence comparative analyses, strain Y2T was shown to belong to the genus Tsukamurella and was most closely related to Tsukamurella tyrosinosolvens DSM 44234T (GenBank accession no. AY238514; 99.8 %). The predominant fatty acids were C18 : 1{omega}9c and C16 : 0. The cell-wall peptidoglycan of strain Y2T contained meso-diaminopimelic acid as the diagnostic diamino acid. Strain Y2T contained galactose and arabinose as the whole cell sugars. The DNA G+C content was 77 mol%. The DNA–DNA relatedness value between strain Y2T and T. tyrosinosolvens DSM 44234T was 62.7 %. Based on the combination of the carbon source utilization pattern, fatty acid profile, cell-wall chemotype, DNA G+C content and DNA–DNA hybridization experiments, it is proposed that strain Y2T (=KCCM 42885T=JCM 15482T) represents the type strain of a novel species, Tsukamurella carboxydivorans sp. nov.

Abbreviations: CO-DH, CO-dehydrogenase; INT, 2-(4-indophenyl)-3-(4-nitrophenyl)-2H-tetrazolium chloride

{dagger}Present address: Division of Infectious Diseases, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts 02115 USA.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of Tsukamurella carboxydivorans Y2T is EU521689.

A supplementary table detailing the fatty acid contents of strain Y2T and other closely related species of the genus Tsukamurella is available with the online version of this paper.






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