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Applied and Environmental Microbiology, November 2002, p. 5756-5759, Vol. 68, No. 11
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.11.5756-5759.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Differential Enantioselective Transformation of Atropisomeric Polychlorinated Biphenyls by Multiple Bacterial Strains with Different Inducing Compounds

Andrew C. Singer,^1* Charles S. Wong,^2, and David E. Crowley¹

Department of Environmental Sciences, University of California, Riverside, California 92521,¹ U.S. Environmental Protection Agency, Ecosystem Research Division, National Exposure Research Laboratory, Athens, Georgia 30605²

Received 29 April 2002/ Accepted 7 August 2002

Five polychlorinated biphenyl (PCB)-degrading bacteria were tested for the ability to differentiate between the enantiomers of four atropisomeric PCB congeners (2,2',3,6-tetra-CB; 2,2',3,3',6-penta-CB; 2,2',3,4',6-penta-CB; and 2,2',3,5',6-penta-CB) after growth in the presence of tryptone-soytone, biphenyl, carvone, or cymene. Enantioselectivity was shown to vary with respect to strain, congener, and cosubstrate.

Present address: Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.