Table 4

Acetaldehyde oxidation activity of human P450 expressed in yeast

Expressed P450Acetate Formation
nmol/min/nmol P450
1A15.1
1A27.4
2A63.6
2B62.4
2C84.7
2C93.1
2C189.6
2D61.7
2E126.3
3A46.4

The reaction mixture, containing 30 pmol human P450 and 300 μM acetaldehyde in a final volume of 100 μl of 0.1 M Tris-acetate buffer, pH 7.2, was incubated for 15 min at 37°C in the absence or presence of 10 mM NADPH.