The role of the metal ion (Mg 2+ ) in catalysis by enolase is to:

The metal ion in enolase acts as a facilitator of general base catalysis by coordinating with the substrate and helping to abstract a proton from the substrate's hydroxyl group. This lowers the activation energy for the reaction and increases the rate of the enzyme-catalyzed reaction.

The role of the metal ion (Mg 2+ ) in catalysis by enolase is to:

The metal ion in enolase acts as a facilitator of general base catalysis by coordinating with the substrate and helping to abstract a proton from the substrate's hydroxyl group. This lowers the activation energy for the reaction and increases the rate of the enzyme-catalyzed reaction.

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The Role of the Metal Ion (Mg²⁺) in Catalysis by Enolase

Question 36

Multiple Choice

The role of the metal ion (Mg²⁺) in catalysis by enolase is to:

A) act as a general acid catalyst.
B) act as a general base catalyst.
C) facilitate general acid catalysis.
D) facilitate general base catalysis.
E) stabilize protein conformation.

Correct Answer: