Abstract

The O-linked oligosaccharides of the jelly coat surrounding the eggs of Xenopus laevis were analysed by 1H-NMR spectroscopy. Among the 12 neutral oligosaccharide-alditols which have been characterized, three of them possess the following unusual structures: [sequence: see text] As previously observed for six other amphibian species, the carbohydrate chains of the jelly coat of Xenopus eggs display a high species specificity which could support a biological role during the fertilization processes.

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