The N-linked glycans on transferrin and α1-antitrypsin from patients with congenital disorders of glycosylation type I have increased fucosylation and branching relative to normal controls. The elevated levels of monofucosylated biantennary glycans are probably due to increased α-(1 → 6) fucosylation. The presence of bi- and trifucosylated triantennary and tetra-antennary glycans indicated that peripheral α-(1 → 3), as well as core α-(1 → 6), fucosylation is increased. Altered processing was observed on both the fully and underglycosylated glycoforms.
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The Biochemical Society, London ©2001
2001
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