Degradation of phenanthrene and anthracene by cell suspensions of Mycobacterium sp. strain PYR-1

Article Abstract:

Researchers describe a novel metabolic pathway in Mycobacterium sp. strain PYR-1 for degrading phenanthrene and anthracene. This might be due to different dioxygenases or to a greater substrate variability on the part of the same dioxygenase.

Mycobacterium

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Regio- and stereoselective metabolism of 7,12-dimethylbenz[a]anthracene by Mycobacterium vanbaalenii PYR-1

Article Abstract:

Research examines the biodegradation of the carcinogenic polycyclic aromatic hydrocarbon 7,12-dimethylbenz[a]anthracene by Mycobacterium vanbaalenii PYR-1. The biodegradation process involves dioxygenation and monooxygenation reactions and proceeds in a highly regio- and stereoselective manner.

United States, Cyclic crudes and intermediates, Cyclic Crude and Intermediate Manufacturing, Anthracine, Analysis, Physiological aspects, Cocarcinogens, Carcinogens, Polycyclic aromatic compounds, Anthracene

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Initial oxidation products in the metabolism of pyrene, anthracene, fluorene, and dibenzothiophene by the white rot fungus Pleurotus ostreatus

Article Abstract:

The white rot fungus Pleurotus ostreatus metabolizes pyrene and anthracene to form trans dihydrodiols. Pyrene trans-4,5-dihydrodiol is mainly the R,R enantiomeric form while anthracene trans 1,2-dihydrodiol is mainly the S,S form. Fluorene is metabolized to 9-fluorenol and 9-fluorenone, and dibenzothiophene to its sulfoxide and sulfone. The metabolism products suggest the involvement of a cytochrome P-450 monooxygenase in the reaction. The results of the study indicate that the metabolism of polycyclic aromatic hydrocarbons by P. ostreatus is similar to that by nonligninolytic fungi.

Polycyclic aromatic hydrocarbons, Pleurotus ostreatus

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