Where : k 1 is the rate coefficient for the reaction that consumes A and B; k 2 is the rate coefficient for the backwards reaction, which consumes X and Y and produces A and B.
12.
Kd would be equivalent to k-1 / k1, where k1 and k-1 are the rates of the forward and backward reaction, respectively in the conversion of individual E and S to the enzyme substrate complex.
