All of the following are covalent modifications of enzyme regulation EXCEPT:: (A) Phosphorylation, (B) ADP Ribosylation, (C) Acetylation, (D) Glycosylation
Answer is D. Various ways of covalent modifications of enzymes are : Most common is Phosphorylation and Dephosphorylation ADP Ribosylation, Methylation, Acetylation