Figure 2. Activity profiles for inactivation of a protein after q sites have been phosphorylated.
We plot Xa/XT = XI/XT as a function of k/h, as given by Eq. (3) for an ordered distributive mechanism (A) and by Eq. (5) for a disordered distributive mechanism (B). In either case, N = 10 and q is varied between 0 and 8. The value of q is given in the circle superimposed on each curve.