FIG 4.

Kinetics of NO reduction in the 2.4.3 wild type versus the ΔnorEF mutant. (A) Rates (mmol g⁻¹ cell dry weight h⁻¹) plotted against the NO concentration in liquid (nM), together with the model fitted to the entire data set (V_max = 4.2 mmol g⁻¹ cell dw h⁻¹, K_s = 577 nM). (B) Log-log plot of the same data to visualize the relationships between the strains and model at low NO concentrations.