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Points on a Reaction Diagram

BIOCHM-8UBVY7

A reaction diagram is a plot of Gibbs free energy ($G$) vs. reaction progress for the substrate, product, transition state(s) and intermediates in a chemical reaction. A reaction diagram for a chemical reaction that is uncatalyzed as well as enzyme catalyzed is shown.

In the diagram, the blue line represents the uncatalyzed chemical reaction with the red line represents the enzyme-catalyzed reaction.

The value shown at point A on the graph represents

and the value shown at point B represents

. The value shown at point C represents

, the value at D stands for

, and finally, the value at point E is for

.