Rabbit liver enzymes responsible for reduction of nitropolycyclic aromatic hydrocarbons.

Abstract
The present paper is the first description of mammalian nitroreductases acting upon nitropolycyclic aromatic hydrocarbons. Rabbit liver microsomal and cytosolic fractions have ability to reduce 1-nitropyrene or 2-nitrofluorene to the corresponding amine under anaerobic conditions. The nitroreductase activity in the former fraction is mainly due to a cytochrome P-450 system and that in the latter fraction is due to aldehyde oxidase.

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