Journal
TRENDS IN CELL BIOLOGY
Volume 11, Issue 3, Pages 136-141Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/S0962-8924(01)01925-0
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N-linked glycosylation is the most frequent modification of secretory proteins in eukaryotic cells. The highly conserved glycosylation process is initiated in the endoplasmic reticulum (ER), where the Glc(3)Man(9)GlcNAc(2) oligosaccharide is assembled on the lipid carrier dolichylpyrophosphate and then transferred to selected asparagine residues of polypeptide chains. In recent years, several inherited human diseases, congenital disorders of glycosylation (CDG), have been associated with deficiencies in this pathway. The ER-associated glycosylation pathway has been studied in the budding yeast Saccharomyces cerevisiae, and this model system has been invaluable in elucidating the molecular basis of novel types of CDG.
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