Peptide Modifications advanced
N-Glycosylation of Peptides
Comprehensive guide to N-glycosylation modifications on asparagine residues in peptide biology.
By Encyclopeptide Editorial | 1 min read
glycosylation post-translational modification
Overview
N-glycosylation is a co-translational modification where oligosaccharides attach to asparagine residues in the Asn-X-Ser/Thr sequon.
Mechanism
The process begins in the endoplasmic reticulum with transfer of a preassembled oligosaccharide (Glc3Man9GlcNAc2) to nascent polypeptides by oligosaccharyltransferase.
Types
- High-mannose: Minimal processing
- Hybrid: Mixed processing
- Complex: Extensive Golgi processing
Biological Significance
N-glycosylation affects protein folding, stability, cell-cell recognition, and immune function. IgG Fc glycosylation modulates antibody effector functions.
References
- Source: ENCP Peptide Database
- Category: Peptide Modifications
Test Your Knowledge
Reinforce what you learned about N-Glycosylation of Peptides with interactive quizzes on Wikipept.
Take a Quiz on Wikipept