Question

Which of the following statements about allostery is true?

A) Allosteric regulators are often products of other chemical reactions in the same biochemical pathway.
B) Allosteric regulation is always used for negative regulation of enzyme activity.
C) Enzymes are the only types of proteins that are subject to allosteric regulation .
D) Binding of allosteric molecules usually locks an enzyme in its current conformation, such that the enzyme cannot adopt a different conformation.

Answer 1

Allosteric regulation is an important mechanism for controlling enzyme activity. It involves binding of a regulator molecule to the allosteric site of an enzyme, inducing a conformational change that affects substrate binding and reaction rates. Allosteric regulation can be either positive or negative.

Step-by-step explanation:

Allosteric regulation is an important mechanism for controlling enzyme activity. Allosteric enzymes have both a binding site for substrate binding and catalysis, and an allosteric site for regulation. When a regulator molecule binds to the allosteric site, it induces a conformational change in the enzyme that affects substrate binding and reaction rates. Allosteric regulation can be either positive or negative, depending on the prevailing conditions.