SUBSTRATE-ELICITED DISSOCIATION OF THE ISOSAFROLE METABOLITE-CYTOCHROME P-450 COMPLEX AND THE CONSEQUENTIAL REACTIVATION OF MONOOXYGENATION

ABSTRACT The present study was initiated to determine whether the substrate-elicited dissociation of the isosafrole metabolite-cytochrome P-450 complex resulted in increased monooxygenase activity. It was found that the substrates p -nitroanisole and ethoxycoumarin would elicit dissociation, furthermore this dissociation was accompanied by increased dealkylation of the substrates. Benzo(a)pyrene was found not to effect the dissociation of the complex, while biphenyl, which undergoes a similar hydroxylation, was effective.