ßiol. Chem. Hoppe-Seyler Vol. 374, pp. 175-181, March 1993 Microbial Metabolism of Quinoline and Related Compounds XVIL Degradation of 3-Methylquinoline by Comamonas testosteroni 63 Susanne SCHACH, Gerhild SCHWARZ, Susanne FRTZNER AND FRANZ LINGENS Institut für Mikrobiologie. Universität Hohcnheim. Germany (Received 18 December 1992) Dedicated to Prof. Dr. A. Butenandt on the occasion of his 90th birthday Summary: A bacterial strain which utilizes 3-methylquinoline as sole source of carbon, nitrogen and energy was isolated from activated sludge. On the basis of its morphological and physiological characteristics, this isolate was classified as Comamonas testosteroni. Four metabolites of 3-methylquinoline degradation were isolated from the culture supernatant and identified as 3-methyl-2-oxo-l,2-dihydroquinoline, 6-hydroxy-3-methyl-2-oxo-l,2-dihydroquinoline, 5,6-dihydroxy-3-methyl-2-oxo-l,2-dihydroquinoline and 2,5,6-trihydroxy-3-methylpyridine. Based on these results, a degradation pathway for 3-methylquinoline is proposed. Key terms: Degradation of 3-methylquinolinc, 3-methyl-2-oxo-1.2-dihydroquinoline, 5,6-dihydroxy-3-methyl-2-oxo-l,2-dihydroquinoline, 2,5,6-trihydiOxy-3-methylpyridine, Comamonas testosteroni. Quinoline, methylquinolines and other AMieterocyclic compounds occur in shale oil'1!, and they are found as common contaminants in many aquifers affected by fossil fuel processing activities, in groundwater near landfills containing azaarene-contaminated solid wastes and near creosote wood preservation facilities'2-9". Since some of these compounds are suspected to be carcinogenic13·10'111, the discharge of them causes health effects and environmental damage. Assessment of the hazard posed by
Biological Chemistry Hoppe-Seyler – de Gruyter
Published: Jan 1, 1993
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