Table 2

Effect of different xanthates on the 7-EFC O-deethylation activity of P-450 2B6

XanthateKIkinactivationT1/2
μM min−1 min
C3iso6.50.0163
C81.00.0236
D6094.70.0169
C149.90.01111

Assay conditions were as described in Experimental Procedures. The data shown represent the mean from three different experiments.