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The structure of the O-specific polysaccharide of Hafnia alvei strain 1216

✍ Scribed by Ewa Katzenellenbogen; Elzbieta Romanowska; Alexander S. Shashkov; Nina A. Kocharova; Yuriy A. Knirel; Nikolay K. Kochetkov

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
662 KB
Volume
259
Category
Article
ISSN
0008-6215

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✦ Synopsis

The O-specific polysaccharide of Hafnia alvei strain 1216 is composed of o-galactose, o-glucuronic acid, 2-acetamido-2-deoxy-o-glucose, 3,6-dideoxy-3-[CR)-3-hydroxybutyramidolo-glucose, and O-acetyl groups in the ratios 1: 1: 2: 1: 1. On the basis of sugar and methylation analyses of the intact and chemically degraded (O-deacetylated, carboxyl-reduced, Smith-degraded) polysaccharide and 'H and 13C NMR spectroscopy, including 2D shift-correlated (COSY, relayed COSY, r3C, 'H-COSY) and 1D NOE spectroscopy, it was concluded that the O-antigen is built up of linear pentasaccharide units having the following structure:

(I?) CH,CH(OH)CH,CO OAc 13 '6 + 41-wD-Quip3k(l + 4)-@~-&p-(1 -+ 4)-P-D-GlcpNAc-(1 + 4)-P-D-GlcpA-( 1 -+ 3)-p-D-GlcpNAc-( 14 * Corresponding author.

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