Table 3.

Coenzyme (NADH/NADPH) dependency on ketone reduction using cell-free extracts of Synechococcus

Substrate	Coenzyme	Yield of ketone reduction (%)
TFA	NADPH	16 (1.00)*
	NADH	3.5 (0.22)*
PF	NADPH	12 (1.00)*
	NADH	0.8 (0.07)*

Substrate: 2 mg, 0.1 M potassium phosphate buffer (pH7): 2 mL,

Acetone-dried powder of Synechococcus: 10 mg, NADH or NADPH: 5 mg, 25°C, 44 h

*Values in parentheses are the relative to the yields in the presence of NADPH.