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Updated: Sep 10, 2026

Improved In-gel Reductive β-Elimination for Comprehensive O-linked and Sulfo-glycomics by Mass Spectrometry
Published on: November 20, 2014
Sulfated fucans from echinoderms have a regular tetrasaccharide repeating unit defined by specific patterns of
B Mulloy1, A C Ribeiro, A P Alves
1National Institute for Biological Standards and Control, Potters Bar, Hertfordshire, United Kingdom.
Abstract:
Sulfated fucans from echinoderms (sea cucumber and sea urchin) have a linear backbone of 1-->3-linked alpha-L-fucopyranose with some sulfate substitution at the 2- and 4-positions. NMR spectroscopy indicates that both polysaccharides have a tetrasaccharide repeat unit in which the separate residues differ only in the extent and position of their sulfate substitution. The sea urchin fucan has the structure, [formula: see text] This type of regular structure has not previously been described, and is in contrast with the random arrangement of substituents on the similar 1-->3-linked alpha-L-fucopyranose backbone of the fucoidans from brown algae.
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