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EC number: 606-948-7 | CAS number: 2217-02-9
Table 1. Kinetic analysis of the oxidation by human liver microsomes and recombinant P450 enzymes
expressed in Trichoplusia ni cells
Oxidation of (+)-Fenchol
*Substrate concentrations used were 10, 50, 100, 200, 500, 750, 1000 µM.
(2) nmol/min/nmol P450
(3) nM-1 min-1.
The metabolism of the test item was studied by the analysis of incubations of in vitro-prepared human liver microsomes. Incubations were carried out at 37ºC for 30 min and contained human liver microsomes (0.1mgml-1) or recombinant P450 (10 pmol ml-1) with 100 mM test item in a final volume of 0.5 ml of 100mM potassium phosphate buffer (pH 7.4) containing an NADPH-generating system consisting
of 0.5mM NADP+, 5mM glucose 6-phosphate, and 0.5 unit of glucose 6-phosphate dehydrogenase ml-1. The biotransformation of the test item was investigated by gas chromatography-mass spectrometry (GC-MS). Under these conditions, the test item was found to be oxidized to fenchone, with CYP2A6 identified as the major enzyme involved.
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