Question

Which of the following statements is correct?
(A). Allosteric enzymes don't obey Michaelis mentioned kinetics
(B). Some regulatory enzymes are modulated by reversible covalent modification
(C). Allosteric enzymes undergo reversible covalent modification
(D). Reversible covalent modification caused by phosphorylation
Choose the correct answer from the options given below:

• A. (A) and (B) only.
• B. (A), (B) and (C) only.
• C. (A), (B) and (D).
• D. (A), (B), (C) and (D).

Hint:

Classic enzyme kinetics check:
Allosteric enzymes $\rightarrow$ Sigmoidal curve (do not obey Michaelis-Menten).
Covalent modification $\rightarrow$ Phosphorylation Dephosphorylation (kinases/phosphatases).

Answer 1

The Correct Option is C