Oligosaccharides linkage-region

Figure 3. Structure of the common oligosaccharide linkage region.

In the polymers of groups (1) and (2), polysaccharide chains composed of oligosaccharide repeating-units (sometimes, partially modified) are usually linked to a unique oligosaccharide unit present near the point of attachment of the chain to another polymeric chain, or to a lipid anchor. This unit is called the linkage region in the polymers of bacterial cell-wall, and the core region in lipopolysaccharides. 

X. Biosynthesis of Carbohydrate-Protein Linkage-Region Oligosaccharides. 228... 

Oligosaccharide Fragments Isolated from the Carbohydrate-Protein Linkage-Region of Dermatan Sulfate Proteoglycans 1... 

Scheme 21. Synthesis of oligosaccharide 118 of the proteoglycan linkage-region via active-...

J. G. Allen and B. Fraser-Reid, n-Pentenyl glycosyl orthoesters as versatile intermediates in oligosaccharide synthesis. The proteoglycan linkage region,./. Am. Chem. Soc., 121 (1999) 468-469. 

Table 1 Methylation analysis of the linkage region of oligosaccharide DP-6...

Keratan sulphates I and II have been isolated and purified from bovine cornea and nasal cartilage, respectively. Desulphation of keratan sulphate I yielded both water-soluble and water-insoluble products, but keratan sulphate II yielded only water-soluble products. The water-soluble form contains glycopeptides from the protein-polysaccharide linkage region, and oligosaccharides derived from the main chain of the glycosaminoglycan associate forming water-insoluble species. 

Isol. from partial acid hydrolysate of corn-hull hemicellulose and from bean cell wall. Constit. of the oligosaccharides from the linkage region of chondroitin 4-sulfate. Mp 201-211°. [a]g +18 (c, 0.5 in H2O) (+15). 

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