Beta Phase: Square45 is currently in beta testing. Expect some features or content to be incomplete or missing.

Michaelis Constant (Km)

The substrate concentration at which the reaction rate is half of Vmax; a measure of enzyme affinity for its substrate.

📜

The statement of the theorem

Define the Michaelis constant

K_m

as the substrate concentration

[S]

that yields a reaction velocity

v

equal to half of the maximum velocity

V_{max}

K_m = [S] \quad \text{such that} \quad v = \frac{V_{max}}{2}