The maximal velocity of the reaction (or maximal rate) Vmax is the rate attained when the enzyme sites are saturated with substrate, i.e. when the substrate concentration is much higher than the KM. Examples: Q8W1X2, Q9V2Z6. The Vmax value depends on environmental conditions, such as pH, temperature and ionic strength.

What is meant by Vmax?

Vmax definition. Vmax is the maximal reaction rate or velocity of an enzymatically catalyzed reaction when the enzyme is saturated with its substrate. … Vmax depends upon the amount or the concentration of the enzyme as well as the structure of the enzyme.

What is Vmax and K?

Biomolecules: Enzymes Maximal Velocity (Vmax): Increasing the substrate concentration indefinitely does not increase the rate of an enzyme-catalyzed reaction beyond a certain point. … An enzyme’s Km describes the substrate concentration at which half the enzyme’s active sites are occupied by substrate.