Primary structure of a novel N-glycosidic carbohydrate unit, derived from hen ovomucoid

Publication date

1983

Authors

Vliegenthart, J.F.G.
Paz Parente, J.
Strecker, G.
Leroy, Y.
Montreuil, J.
Fournet, B.
Halbeek, H. van
Dorland, L.

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Article
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Abstract

The N-glycosidic carbohydrate chains of hen -ovomucoid were released from the protein by hydrazinolysis, and separated by HPLC. Primary structural analysis of 3 major fractions was conducted by applying 500-MHz 1H-NMR spectroscopy in combination with methylation analysis. One of the fractions investigated appeared to consist of an intersected penta-antennary structure extended with one Gal residue. The location of the latter in a certain branch could be established unambiguously by NMR. This structure is a novel member of the family of N-glycosidic carbohydrates of glycoproteins.

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