So we want to come up with an equation, a rate law that describes how the rate of a particular enzyme catalyzed reaction is affected by different types of variables. This is what we basically want to explore. So as always, let's begin with the same equation that we use to derive the Maclus methane equation. So this is the equation that describes a general enzyme catalyze reaction at its beginning stages. So at the beginning, this is the chemical equation that describes any enzyme catalyzed reaction. So we have an enzyme and we have a substrate.