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A sulfated alpha-L-fucan from sea cucumber
A C Ribeiro1, R P Vieira, P A Mourão
1Departamento de Bioquímica, Universidade Federal do Rio de Janeiro, Brazil.
Carbohydrate Research
|March 4, 1994
Abstract:
A purified sulfated alpha-L-fucan from the sea cucumber body wall was studied, before and after almost complete desulfation, using methylation analysis and NMR spectroscopy. NMR analysis indicates that 2,4-di-O-sulfo-L-fucopyranose and unsubstituted fucopyranose are present in equal proportions, and that 2-O-sulfo-L-fucopyranose is present in twice that proportion. There is some NMR evidence that a regular repeating sequence of four residues comprises most or all of the polysaccharide chain.