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Heterologous expression using baculovirus vectors has become a popular method for the production of catalytically active cytochrome P450s (CYPs). We have systematically optimized the multiplicity of infection (MOI) for a coinfection approach for the…

A recombinant baculovirus containing the human cytochrome P450 (CYP) 1A1 cDNA was constructed and used to express CYP1A1 in Spodoptera frugiperda (SF9) insect cells (0.14+/-0.04 nmol/mg protein, 53+/-14 nmol/liter, N=30). The enzyme represented…

A recombinant baculovirus containing the human CYP3A4 cDNA was constructed and used to express CYP3A4 in SF9 insect cells (0.46 +/- 0.13 nmol/mg protein, 103 +/- 29 nmol/liter, N = 15). The enzyme represented similar to 2-3% of total cellular protein…

7,12-Dimethylbenz[a]anthracene (DMBA), a potent carcinogen, requires metabolic activation by cytochrome P450s (P450s) to electrophilic metabolites that result in DNA modification, mutagenicity, and carcinogenicity. In this study, we used eight human…
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