Table 1

Average reductase activity

Results are means of a minimum of three independent experiments ±SE.

EnzymeCell lines
MDA468NQ16
NQO1a (nmol DCPIP/min/mg protein)9.5 ± 2.24797.4 ± 137.5
Cytochrome b5 reductase (nmol cyt.c/min/mg protein, NADH)20.4 ± 2.220.2 ± 1.9
Cytochrome P450 reductase (nmol cyt.c/min/mg protein, NADPH)7.0 ± 0.86.9 ± 0.6
  • a NQO1, NAD(P)H:quinone oxidoreductase; DCPIP, 2,6-dichloropheol-indophenol.