title: Metabolic pathways of polychlorinated biphenyls degradation by Pseudomonas sp. 2.
abstract: Polychlorinated biphenyls (PCBs) included with the commercial mixture Delor 103 were degraded by immobilized cells of aerobic bacterial strain Pseudomonas sp. 2. The ability of the strain to metabolise selected tri- and tetrachlorobiphenyls, and the site of primary attack of the biphenyl skeleton were investigated. It was observed that the amount of residual PCBs was 1-48% of the original PCBs after three weeks of incubation. Identified metabolites indicate that the used bacterial strain attacks the biphenyl skeleton at the 2,3- and 3,4-positions, and it is also able to dehalogenate PCBs. Metabolic pathways of degradation of individual congeners were proposed. Transformation of 2,4- and 2,5-dichlorobenzoic acids by Pseudomonas sp. 2 was also observed.
authors.affiliation: Department of Environmental Chemistry, ICT Prague, Technická 5, 166 28, Prague 6, Czech Republic.
authors.forename: Michaela
authors.initials: M
authors.lastname: Komancová
authors.forename: Irena
authors.initials: I
authors.lastname: Jurcová
authors.forename: Lucie
authors.initials: L
authors.lastname: Kochánková
authors.forename: Jirí
authors.initials: J
authors.lastname: Burkhard
mesh_terms: D001673:Biodegradation, Environmental; D004785:Environmental Pollutants / Q000378:metabolism*; D011078:Polychlorinated Biphenyls / Q000378:metabolism*; D011549:Pseudomonas / Q000502:physiology*
chemical_list: D004785:Environmental Pollutants; D011078:Polychlorinated Biphenyls