[Inherited disorders of protein glycosylation].
Protein N-glycosylation is a widely occurring and vital posttranslational modification in mammalian cells. Although the molecular machinery that is involved in the biosynthesis of these glycoconjugates has been largely identified, the recent discovery of a family of rare inborn diseases in which glycoproteins are abnormally glycosylated has both changed some of our ideas concerning glycoprotein biosynthesis, and given us new insights into this complex process. Advances in the diagnosis of the congenital disorders of glycosylation are well under way and mutations in several of the genes involved in the biosynthesis and maturation of N-linked glycans have been shown to underlie these diseases. By contrast, the chain of events that lead from faulty protein glycosylation to the often severe clinical presentation is an as yet unexplored aspect of these metabolic disorders, and represents a challenge for the future.
Dupré
Thierry
T
Service de Biochimie A, Hôpital Bichat, AP-HP, 16, rue Henri Huchard, 75877 Paris Cedex 18, France.
Lavieu
Grégory
G
Moore
Stuart
S
Seta
Nathalie
N
D004252:DNA Mutational Analysis; D003937:Diagnosis, Differential; D006031:Glycosylation; D006801:Humans; D008661:Metabolism, Inborn Errors / Q000235:genetics*; D011134:Polysaccharides / Q000235:genetics / Q000494:pharmacology
D011134:Polysaccharides