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A 13C-N.m.r. study of the binding of ytterbium(III) to chondroitin sulphate and chondroitin

✍ Scribed by Sijbe Balt; Martinus W.G. de Bolster; Gesina Visser-Luirink

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 520 KB
Volume: 121
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(83)84001-4

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✦ Synopsis

13C-N.m.r. spectra of chondroitin 4- and 6-sulphates, chondroitin, beta-D-glucuronate, and beta-D-glucose 6-sulphate were measured in the presence of ytterbium(III) in deuterium oxide. The structure of the ytterbium-polysaccharide compounds in solution was found to be similar to that reported for calcium chondroitin 4-sulphate in a stretched film. In the glucuronate complex, Yb(III) coordinates to the carboxylate group. For beta-D-glucose 6-sulphate, the ytterbium-induced shifts are too small to allow the structure to be determined.

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