Question

Which of the following is a measure of how responsive the enzyme is to changes in the concentration of a metabolite?

(a) Response coefficient

(b) Elasticity coefficient

(c) Flux control coefficient

(d) Metabolic control

I have been asked this question in an online quiz.

Query is from Analysis of Metabolic Control in division Principles of Metabolic Regulation: Glucose and Glycogen of Biochemistry

Answer 1

Right option is (b) Elasticity coefficient

Best explanation: Flux control coefficient is a measure of the effect of an enzyme’s concentration on flux through a multi-enzyme pathway.

An expression for the experimentally determined change in flux through a pathway in response to a regulatory hormone or second messenger is the response coefficient.