What always serves as the donor of a sugar to the growing oligosaccharide chain of a glycoprotein?
A)a sugared nucleotide
B)a nucleotide peptide
C)a nucleotide sugar
D)a sugar
E)ATP

Question

Quizplus · Accepted Answer

Nucleotide sugars are activated forms of monosaccharides that serve as donors for glycosylation reactions. They are synthesized in the cytoplasm and then transported into the Golgi apparatus, which is where glycosylation occurs. Thus, nucleotide sugars are the donors of sugars to growing oligosaccharide chains of glycoproteins.

What Always Serves as the Donor of a Sugar to the Growing