RT Journal Article SR Electronic T1 Mechanism of p-Nitrobenzoate Reduction in Liver: The Possible Role of Cytochrome P-450 in Liver Microsomes JF Molecular Pharmacology JO Mol Pharmacol FD American Society for Pharmacology and Experimental Therapeutics SP 541 OP 548 VO 4 IS 6 A1 GILLETTE, JAMES R. A1 KAMM, JEROME J. A1 SASAME, HENRY A. YR 1968 UL http://molpharm.aspetjournals.org/content/4/6/541.abstract AB The following evidence suggests that the reduction of p-nitrobenzoate to p-aminobenzoate by liver microsomes is mediated by cytochrome P-450: (a) carbon monoxide blocks nitroreduction, and the degree of inhibition is proportional to the amount of cytochrome P-450 bound as the carbon monoxide complex; (b) the rate of nitroreduction is proportional to the amount of cytochrome P-450 in liver microsomes from animals previously treated with either phenobarbital or carbon tetrachloride.