Another model for the phosphorylation reactions, referred to as one-step reaction model, is given by Z+ X --→ X∗ +Z and Y+ X∗ --→ X +Y, in which the complex formations are neglected.
Write down the differential equation model and compare the differential equation of X∗ to that of equation (2.29). List the assumptions under which the one-step reaction model is a good approximation of the twostep reaction model.
