Question

Which of the following is false about allosteric feedback inhibition?

(a) Bacterial enzyme system is the first known example

(b) Conversion of L-leucine to L-isoleucine

(c) Threonine dehydratase is inhibited by isoleucine

(d) If the isoleucine concentration decreases, the rate of threonine dehydration increases

This question was addressed to me in examination.

Enquiry is from Regulatory Enzymes topic in division Enzymes, Carbohydrates and Gycobiology of Biochemistry

Answer 1

The correct answer is (b) Conversion of L-leucine to L-isoleucine

Easy explanation: The bacterial enzyme system that catalyses L-threonine to L-isoleucine are the first known example of allosteric feedback inhibition.