Table II.

Effects of NADH, p-CMPS, and NADH plus p-CMPS on the NADH-FeCNR activity of the enzymes ES, ET1, and ET2

Enzyme	NADH-FeCNR Activity
	NADH	p-CMPS	NADH + p-CMPS
	%
ES	92.0  ± 5.0	88.5  ± 4.5	77.5  ± 13.0
ET1	99.5  ± 5.5	92.0  ± 6.5	87.0  ± 4.5
ET2	114.5  ± 4.5	89.5  ± 5.0	92.0  ± 4.0

The enzymes were incubated at 30°C for 20 min with 0.5 mM NADH, 0.05 mM p-CMPS, or 0.5 mM NADH plus 0.05 mM p-CMPS prior to the activity assays. The values indicate activity percentages in relation to nontreated samples (see Table I) and are means ± se of three to five independent assays.