PMID: 330162Jun 15, 1977

Somatic antigens of Shigella. Structural investigation on the O-specific polysaccharide chain of Shigella dysenteriae type-2 lipopolysaccharide

European Journal of Biochemistry
B A DmitrievK Capek

Abstract

The O-specific polysaccharide obtained from Shigella dysenteriae type-2 lipopolysaccharide by mild acid hydrolysis consisted of N-acetylgalactosamine, N-acetylglucosamine, D-galactose, D-glucose, and O-acetyl group in the ratio of 2:1:1:1:1. A number of oligosaccharides were obtained by deamination of the N-deacetylated polysaccharide and by Smith degradation of the both native and O-deacetylated polysaccharides. The identification of oligosaccharides along with methylation analysis and chromic anhydride oxidation showed that the polysaccharide was built up of the repeating pentasaccharide units whose proposed structure is given below: (see article) Serological properties of Sh. dysenteriae O-specific polysaccharides are discussed.

Related Concepts

Hemagglutination Inhibition Tests
Anhydrides
Protein Methylation
Chromic
Dysentery, Bacillary
Acetylgalactosamine
Galactose
Oxidation
Polysaccharides, Bacterial
Ectodermal Dysplasia, Hypohidrotic, Autosomal Recessive

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