Which of the following could be a positive allosteric effector of an enzyme?
A) a competitive inhibitor
B) a noncompetitive inhibitor
C) a compound, other than the substrate, which binds to the active site
D) a compound, other than the substrate, which binds to the enzyme but not to the active site
E) a coenzyme which is essential for the activity of the enzyme

Question

Quizplus · Accepted Answer

EPositive allosteric effectors bind to sites on an enzyme other than the active site, enhancing the enzyme's activity without directly participating in the catalysis of the substrate. This excludes competitive and noncompetitive inhibitors, as well as compounds that bind to the active site. Coenzymes, which are essential for some enzymes' activities, can also act as positive effectors by facilitating the enzyme's catalytic action.

Which of the Following Could Be a Positive Allosteric Effector