Enzyme kinetics studies the rates of enzyme-catalyzed reactions. The Michaelis-Menten equation is commonly used to describe the relationship between reaction rate and substrate concentration. The equation is given by:
V0 = (Vmax [S]) / (Km + [S])
where V0 is the initial reaction rate, Vmax is the maximum rate, [S] is the substrate concentration, and Km is the Michaelis constant, a measure of the affinity of the enzyme for the substrate.