Which of the following amino acids in a protein commonly acts as a potential O-Glycosylation site for attachment of an oligosaccharide unit -: (A) Glutamine, (B) Cysteine, (C) Serine, (D) Asparagine
Answer is C. O-glycosylation:- Addition of oligosaccharide to hydroxyl chain of serine or threonine.
N-glycosylation:- Addition of oligosaccharide to the amide nitrogen of asparagine.