FIG 5.

Enzyme activity of Nd-XoxF1 measured spectrophotometrically in the first 2 min after substrate addition (red dots), after 4 to 6 min (blue dots) and after 8 to 10 min (green dots). Specific enzyme activities at different concentrations of methanol (A) or formaldehyde (B). Data points represent averages of duplicates, error bars represent standard deviations. (C) Arrhenius activation energy for methanol oxidation at different temperatures. Data points represent averages of duplicates. (D) Specific enzyme activities on methanol at different pH values.