TABLE 2

Kinetic constants of CBR3 V244 and CBR3 M244



CBR3 V244

CBR3 M244

Km
Vmax
kcat
Vmax/Km
Km
Vmax
kcat
Vmax/Km
μM μmol/min · mg s-1 min-1 × 103 μM μmol/min · mg s-1 min-1 × 103
Menadionea 24.6 ± 3.2 19.6 ± 2.0 9.9 797 22.9 ± 2.9 40.6 ± 1.3 20.5 1773
NADP(H)b
90.5 ± 2.5
32.4 ± 1.0
16.3
358
85.0 ± 2.0
53.0 ± 1.0
26.7
624
  • a Each value corresponds to the mean ± S.D. obtained from eight experiments performed with two independent protein preparations for each isoform

  • b Menadione was held constant at 150 μM. Each value represents the mean ± S.D. obtained from four experiments with two independent protein preparations