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The structure of CS/DS. The CS/DS chain consisting of D-glucuronic acid (GlcA) or L-iduronic (IdoA) acid glycosidically linked to N-acetylgalacyosamine (GalNAc) [(-4GlcAβ1-3GalNAcβ1-) or (-4IdoAα1-3GalNAcβ1-). CS/DS chains are covalently attached to the core protein by GAG-protein linkage region tetrasaccharide.
