Title : Metabolism of the human immunodeficiency virus protease inhibitors indinavir and ritonavir by human intestinal microsomes and expressed cytochrome P4503A4/3A5: mechanism-based inactivation of cytochrome P4503A by ritonavir.

Pub. Date : 1998 Jun

PMID : 9616191






2 Functional Relationships(s)
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1 Ritonavir was similarly biotransformed by microsomes containing expressed CYP3A4 or CYP3A5 isozymes (KM = 0.05-0.07 microM, Vmax = 1-1.4 nmol/min/nmol CYP). Ritonavir cytochrome P450 family 3 subfamily A member 5 Homo sapiens
2 In contrast, both the patterns of metabolites and the enzyme kinetic parameters for the metabolism of indinavir by expressed CYP3A5 (KM = 0.21 microM, Vmax = 0.24 nmol/min/nmol CYP) and CYP3A4 (KM = 0.04 microM, Vmax = 0.68 nmol/min/nmol CYP) were different. Indinavir cytochrome P450 family 3 subfamily A member 5 Homo sapiens