Figure 4. Oxygen consumption activity in the presence of d-camphor.

(a) Initial oxygen consumption rates of the capped and uncapped gels were measured in the presence of 100 μM NAD⁺ and 10 mM phosphite. Error bars represent the standard deviations of three replicates. (b) Oxygen consumption by the capped gel was monitored in the presence of 100 μM NAD⁺ and 10 mM phosphite (solid line), 100 μM NADH (dashed line), or 100 μM NAD⁺ (dotted line) at 25°C. An arrow indicates the addition of cofactor.