Somatic Antigens of Shigella
Open Access
- 1 July 1979
- journal article
- research article
- Published by Wiley in European Journal of Biochemistry
- Vol. 98 (1), 309-316
- https://doi.org/10.1111/j.1432-1033.1979.tb13190.x
Abstract
The specific polysaccharide was obtained from the lipopolysaccharide of Shigella newcastle by mild acid hydrolysis and further purified by permeation chromatography on Sephadex G-50. It was found to consist of l-rhamnose, 2-acetamido-2-deoxy-d-galactose, d-galacturonic acid residues and O-acetyl groups in the molar ratios of 2:1:1:1. On the basis of 1H and 13C nuclear magnetic resonance spectroscopy, methylation analysis, partial acid hydrolysis, Smith degradation, and chromium trioxide oxidation, the following structure can be assigned to the repeating oligosaccharide unit of the polysaccharide:-4)dGalA(β1-3)dGalNAc-(β1-2)lAc3Rha(α1-2)lRha(α1-, where Gal A = galacturonic acid, GalNAc =N-acetylgalactosamine, Ac3Rha = 3-O-acetylrhamnose. The structural and immunochemical data presented prove that Sh. newcastle lipopolysaccharide belongs to a ‘non-classical’ type of somatic antigens with acidic O-specific polysaccharide chains.This publication has 21 references indexed in Scilit:
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