What structures are highly glycosylated proteins found in
The extensive glycosylation of proteins primarily occurs at specific amino acid residues on the proteins. This process is a significant post-translational modification that takes place within the cell. Specifically:
1. Asparagine-linked (N-glycosylation):
Occurs at asparagine (Asn, abbreviated N) residues in the amino acid sequence, specifically in the Asn-X-Ser/Thr motif (where X is any amino acid except proline).
2. Serine/Threonine-linked (O-glycosylation):
Occurs at serine (Ser, abbreviated S) or threonine (Thr, abbreviated T) residues. This type of glycosylation is more diverse and does not have the specific sequence dependency of N-glycosylation.
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