Table 1

Kinetic parameters of M1 and M2 formation by rat and human liver microsomes

MicrosomesKMVmaxVmax/KM
M1M2M1M2M1M2
μM pmol/mg/min μl/min/mg
Rat87  ± 13178  ± 31139  ± 391286  ± 1881.58  ± 2.237.22  ± 1.17
Human312  ± 1371-a 312  ± 571-a 8.56  ± 1.091-a 454  ± 681-a 0.03  ± 0.011-a 1.52  ± 0.931-a

Values are mean ± S.D. of three individual liver microsomal preparations.

  • 1-a  Significantly different from rat values at p < 0.01.