A series of enzymes catalyze the reactions illustrated in th…
A series of enzymes catalyze the reactions illustrated in the following metabolic pathway: X → Y → Z → A. Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding of A decreases the activity of the enzyme that converts X to Y. The product A functions as which of the following in terms of its effect on the enzyme that converts X to Y?