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Corynebacterium terpenotabidum sp. nov., a bacterium capable of degrading squalene

Mariko Takeuchi¹, Takeshi Sakane^1,, Takuya Nihira², Yasuhiro Yamada² and Ko Imai^1,

¹Institute for Fermentation, Osaka, 17-85, Jusohonmachi 2-chome, Yodogawa-ku, Osaka 532-8686, Japan
²Department of Fermentation Technology and Bioengineering, Osaka University, 2-1 Yamadaoka, Suita-shi, Osaka 565, Japan

Author for corresondence: Mariko Takeuchi. Tel: +81 6 300 6555. Fax: +81 6 300 6814, e-mail: fvgg0814{at}mb.infoweb.ne.jp

ABSTRACT

The taxonomic status of Arthrobacter sp. Y-11^T, which was described as a squalene-degrading bacterium, was investigated by chemotaxonomic and genetic methods. The strain possesses wall chemotype IV, MK-9(H₂) as the predominant menaquinone, mycolic acids, and straight-chain, saturated and monounsaturated fatty acids, with considerable amounts of tuberculostearic acid. The DNA G+C content is 67.5 mol%. 16S rRNA gene sequence analysis and quantitative DNA-DNA hybridization experiments provided strong evidence that strain Y-11^Trepresents a new species within the genus Corynebacterium, for which the name Corynebacterium terpenotabidum sp. nov. is proposed. The type strain of C. terpenotabidum is strain Y-11^T(= IFO 14764^T).

Key Words: Corynebacterium terpenotabidum • squalene-degrading bacterium

The DDBJ accession number for the 16S rRNA sequence of strain Y-11^T(IFO 14764^T) is AB004730.

Present address: Research Development Corporation of Japan, Ochanomizu Meikei Bldg 6F, 2-3 Kanda Surugadai, Chiyoda-ku, Tokyo 101, Japan. Abbreviation: TBSA, tuberculostearic acid.

Present address: Takeda Chemical Industries Ltd, 17-85, Juso-hoonmachi 2-chome, Yodogawa-ku, Osaka 532, Japan.

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