Abstract

Eleven O-glycosidic carbohydrate units derived from the jelly coat of Ambystoma tigrinum were analyzed by 1H-NMR spectroscopy. As previously shown for four other amphibian species, the glycans display a remarkable species specificity. As a characteristic feature, 3-deoxy-d-glycero -d-galacto -nonulo-sonic acid (Kdn) was found difucosylated at C4 and C5, and α-Gal attached to C3 of GalNAc-ol. The most representative carbohydrate units are:

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