Prosubstrates of CYP3A4, the major human hepatic cytochrome P450: transformation into substrates by other P450 isoforms.

This study demonstrates interplay among human hepatic cytochrome P450 (CYP) isoforms in transforming aromatic compounds from being prosubstrates of CYP3A4 into phenolic substrates. Incubation of methoxychlor with CYP2C19 yields the phenolic monodemethylated derivative (mono-OH-M). Additionally, CYP2C19 catalyzes the ortho-hydroxylation of mono-OH-M and of… (More)