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  • Title: Carbohydrate moieties of porcine 32 kDa enamelin.
    Author: Yamakoshi Y.
    Journal: Calcif Tissue Int; 1995 Apr; 56(4):323-30. PubMed ID: 7767845.
    Abstract:
    The structures of asparagine-linked oligosaccharides of porcine 32 kDa enamelin are reported. The oligosaccharides were released by N-oligosaccharide glycopeptidase digestion, and the reducing ends of the oligosaccharides were derivatized with a fluorescent reagent, 2-aminopyridine. The pyridylamino oligosaccharides were separated into eight kinds of oligosaccharides. The structures of these oligosaccharides were determined by a combination of a sequential exoglycosidase digestion and a two-dimensional sugar mapping technique. The oligosaccharides consisted of fucose, galactose, mannose, N-acetylglucosamine, and N-acetylneuraminic acid, and were classified into two groups according to their core-sugar chain structures; one was a biantennary-type and the other was a triantennary-type oligosaccharide. The variation of the oligosaccharides in each of these groups was caused by the differences in the number, the site, and the mode of linkage of N-acetylneuraminic acid to the core-sugar chains.
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