Abstract
Glycosaminoglycan (GAG) was purified from polysaccharide extracted from sea hare muscle on DEAE-Sepharose column and investigated for the functional groups, distribution of sugars, composition of disaccharide and structure of GAG. Purified GAG was composed of disaccharide above 55% of total sugar. Purified GAG showed amide I peak in 1648/cm and C-O stretch peak as properties of carbohydrate, amino acid peak in 1457/cm, and peak in 866/cm as properties of monosaccharide by FT-IR. Fucose, N-acetylgalactosamine, N-acetylglucosamine, glucose, galactose, mannose and xylose were found in MALDI-TOF MS/MS spectra of hydrolysates by chondroitin sulfate ABC lyase and heparanase I. Purified GAG was expected to be heparan sulfate including N-acetylgalactosamine and N-acetylglucosamine above 70% of total sugar. The structure of GAG was supposed as GlyUA(2S)-GlcNS and GlyUA-GlcNS(6S) with O-linkage on protein core.
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