Sialic acid, polysaccharides containing

Figure 1.29 Monosaccharides containing carboxylate groups. Sialic acid often is found at the terminal residues of polysaccharides within glycoproteins.

Oxidation of polysaccharides using 10 mM or greater concentrations of sodium periodate at room temperature results in the cleavage of adjacent hydroxyl-containing carbon-carbon bonds on other sugars besides just sialic acid residues (Lotan et al., 1975). High concentrations... 

FIGURE 3-3 Structure of some simple sphingolipids. X may be a complex polysaccharide either containing sialic acid (gangliosides) or not (globosides). See also Figures 3-4 and 3-9 for the nomenclature and structure of some of the complex brain sphingolipids. 

J. Haverkamp, H.L.C. Meuzelaar, E.C. Beuvery, P.M. Boonekamp and R.H. Tiesjema, Characterization of Neisseria meningitidis capsular polysaccharides containing sialic acid by... 

Based on these findings, it is likely that ORFs 23, 24, and 25 encode enzymes that play a role in biosynthesis and polymerization of legionaminic acid and that the biosynthetic pathway is similar to that of bacterial sialic acid-containing polysaccharides.1 ORFs that encode putative legionaminic acid transferase or polymerase were not found in the 32.6-kb locus. 

The group Y and W-135 capsular polysaccharides also contain sialic acid. However, unlike the groups B and C polysaccharides, they are not homopolymers, as they also contain, respectively, D-glucosyl and D-galactosyl residues.35 Structural studies indicated that the group Y... 

Meyer (M34, M35) classified the neutral polysaccharide of hog gastric mucin as mucoid, since it contained over 4% hexosamine. This probably corresponded to the mixture of the carbohydrate moieties of fuco-mucin and sialomucin, whereas his acidic mucopolysaccharide (mucoitin sulfuric acid) consisted perhaps of a mixture of acidic aminopolysac-charides (mucopolyuronides) and possibly some sialic acid. 

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