Site-directed mutageneses of rat liver cytochrome P-450d: catalytic activities toward benzphetamine and 7-ethoxycoumarin.

Abstract

Catalytic activities toward benzphetamine and 7-ethoxycoumarin of 11 distal mutants, 9 proximal mutants, and 3 aromatic mutants of rat liver cytochrome P-450d were studied. A distal mutant Thr319Ala was not catalytically active toward benzphetamine, while this mutant retained activity toward 7-ethoxycoumarin. Distal mutants Gly316Glu, Thr319Ala, and… (More)

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