Watanapokasin Yuwadee, Nuchfoang Siriporn, Nilwarangkoon Sirinun, Sarangbin Somsak, Kakizono Toshihide
Department of Biochemistry, Faculty of Medicine, Srinakarinwirot University, Bangkok, Thailand.
Appl Biochem Biotechnol. 2002 Spring;98-100:301-9. doi: 10.1385/abab:98-100:1-9:301.
A bacterial strain, SWU-4, capable of using benzothiophene (BT) as a sole carbon and energy source was isolated from a petroleum-contaminated site in Thailand and identified by 16S rRNA gene sequence analysis to be in the genus of Mycobacterium. The strain was Gram-positive, nonspore former, and grew at 50 degrees C. Colonies of the strain on nutrient agar were rod-shaped, smooth with a convex surface, slightly mucoid, and yellow pigmented. The thermophilic Mycobacterium sp. strain SWU-4 rapidly degraded 2% (w/v) BT at 50 degrees C. Interestingly, this strain was able to degrade a wide variety of organosulfur compounds including thiophene, bromo(alpha)thiophene, and 3-methylthiophene in liquid minimum medium at 50 degrees C, which will be beneficial for industrial applications.
从泰国一个受石油污染的地点分离出了一株名为SWU-4的细菌菌株，它能够将苯并噻吩（BT）作为唯一的碳源和能源，并通过16S rRNA基因序列分析鉴定为分枝杆菌属。该菌株为革兰氏阳性菌，不形成芽孢，能在50℃下生长。该菌株在营养琼脂上的菌落呈杆状，表面光滑、凸起，略带黏液，且呈黄色。嗜热分枝杆菌菌株SWU-4在50℃下能迅速降解2%（w/v）的BT。有趣的是，该菌株能够在50℃的液体基本培养基中降解多种有机硫化合物，包括噻吩、溴（α）噻吩和3-甲基噻吩，这将有利于工业应用。
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