Title : Inhibition of CYP1A1 enzyme activity in mouse hepatoma cell culture by soybean isoflavones.

Pub. Date : 1999 Nov 15

PMID : 10597900






2 Functional Relationships(s)
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1 The extent of CYP1A1 inhibition increases with time of preincubation at 37 degrees C, but not at 4 degrees C, in the presence of isoflavone plus NADPH; after 60 min preincubation the inhibition remains non-competitive, with apparent Ki values of 55 microM and 50 microM, respectively. NADP cytochrome P450 family 1 subfamily A member 1 Homo sapiens
2 The dependency on NADPH, temperature and time for inhibition of CYP1A1 suggests that metabolism of either isoflavone or molecular oxygen to reactive species is required. NADP cytochrome P450 family 1 subfamily A member 1 Homo sapiens