38.2k views
0 votes
For enzyme-catalyzed reactions that follow sigmoid kinetics, the measure of affinity is _________ .

User Renshaw
by
7.9k points

1 Answer

4 votes

Final answer:

The measure of affinity for enzyme-catalyzed reactions that follow sigmoid kinetics is Km, which is the Michaelis constant. Km is a measure of how quickly the enzyme becomes saturated with a particular substrate. An enzyme with a smaller Km has a higher affinity for the substrate.

Step-by-step explanation:

The measure of affinity for enzyme-catalyzed reactions that follow sigmoid kinetics is Km, which is the Michaelis constant. Km is a measure of how quickly the enzyme becomes saturated with a particular substrate. It is related to the concentration of substrate ([S]) at which the reaction rate reaches half of its maximum value (Vmax).

An enzyme with a smaller Km has a higher affinity for the substrate, meaning it can reach its maximum reaction rate at a lower substrate concentration. Conversely, an enzyme with a larger Km has a lower affinity for the substrate, requiring a higher substrate concentration for the reaction to proceed at its maximum rate.

User Morgs
by
8.1k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.