Abstract
The hydrazinolysis procedure currently used for the release ofN-glycosidic carbohydrate chains was applied to glycocalicin. The resulting mixture of oligosaccharide-alditols was fractionated by high-voltage paper electrophoresis into a neutral (5%) and several acidic fractions. The neutral compounds were passed over Bio-Gel P-4. SomeN-glycosidic oligosaccharide-alditols, of theN-acetyllactosamine type as well as of the oligomannoside type, were found to be present. However, oligosaccharide-alditols derived fromO-glycosidic carbohydrate chains were also found, indicating a partial cleavage of GalNAc1-OSer/Thr linkages under the hydrazinolysis conditions applied. One of the neutralO-glycosidic components was characterized, by 500-MHz1H-NMR spectroscopy in combination with sugar analysis, as the following pentasaccharidealditol:
In addition the afuco analogue of this compound was obtained.
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Korrel, S.A.M., Clemetson, K.J., Van Halbeek, H. et al. The structure of a fucose-containingO-glycosidic carbohydrate chain of human platelet glycocalicin. Glycoconjugate J 2, 229–234 (1985). https://doi.org/10.1007/BF01049270
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DOI: https://doi.org/10.1007/BF01049270