High k6 period-1 cycle in the peroxidase-oxidase reaction as modelled by the BFSO equations. Reaction mechanism is shown at the left. At the lower left, [coIII]/[ET] is plotted against [coI]/[ET] where [ET] = 0.9 mM is total enzyme. Scrolling time series (upper right) is [coI]/[ET], and the width of the time series window, 560 s. The rate constant, k6 = 2.25 x 10-8 M-1s-1.