Below is a metabolic pathway having 3 chemical reactions and 3 enzymes.Enzyme 1 has 2 binding sites--1 for the substrate A and another for the end product D.As the pathway proceeds,the end product in higher quantities will react with enzyme 1,blocking the enzyme's binding to the substrate.Which statement is true about this pathway? enz1 enz2 enz3
Substrate A -- B -- C -- D end product

Question

Below is a metabolic pathway having 3 chemical reactions and 3 enzymes.Enzyme 1 has 2 binding sites--1 for the substrate A and another for the end product D.As the pathway proceeds,the end product in higher quantities will react with enzyme 1,blocking the enzyme's binding to the substrate.Which statement is true about this pathway? enz1 enz2 enz3
Substrate A --> B --> C --> D end product

Quizplus · Accepted Answer

Enzyme 1 has 2 binding sites, one for the substrate A and another for the end product D. As the pathway proceeds, the end product in higher quantities will react with enzyme 1, blocking the enzyme's binding to the substrate. This is a case of noncompetitive inhibition. As a result of the inhibition of the enzyme, there will eventually be less substrate converted to the end product D and this pathway will shut down.

Below Is a Metabolic Pathway Having 3 Chemical Reactions and 3