Question

Protein modification by adding oligosaccharides on to secreted glycoproteins are attached to _______.

A) nitrogen atoms in the polypeptide backbone.
B) the serine or threonine in the sequence Asn-XvSer/Thr.
C) the N-terminus of the protein.
D) the asparagine in the sequence Asn-X-SeriThr.

Answer 1

Protein modification by adding oligosaccharides on to secreted glycoproteins is attached to the asparagine in the sequence Asn-X-Ser/Thr.

Step-by-step explanation:

Protein modification by adding oligosaccharides to secreted glycoproteins is attached to the asparagine in the sequence Asn-X-Ser/Thr. This is known as N-glycosylation. N-glycosylation occurs when an oligosaccharide is attached to the nitrogen atom of the asparagine residue in the polypeptide backbone.