Question

Protein modification by adding oligosaccharides on to secreted glycoproteins are attatched to______.

a)Nitrogen atoms in the polypeptide backbone
b)the serine or theronine in the sequence Asn-X-Ser/Thr
c)the N-terminus of the protein
d)the asparagine in the sequence Asn-X-Ser/Thr

Answer 1

Oligosaccharides are attached to the asparagine in the sequence Asn-X-Ser/Thr to form glycoproteins through the process known as N-glycosylation.

Step-by-step explanation:

The question pertains to the post-translational modification of proteins, specifically the addition of oligosaccharides to form glycoproteins. The correct answer to where these oligosaccharides are attached is to the asparagine in the sequence Asn-X-Ser/Thr. This process is known as N-glycosylation and is a common form of modification for secreted and membrane proteins.

This process is known as N-glycosylation and involves the attachment of carbohydrate side chains to the amide nitrogen on asparagine residues within the protein sequence.