Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1389295 | Carbohydrate Research | 2007 | 5 Pages |
Abstract
The O-polysaccharide was isolated by mild acid degradation of the lipopolysaccharide of Providencia alcalifaciens O6 and studied by sugar and methylation analysis, selective hydrolytic removal of 3,6-dideoxy-l-xylo-hexose (colitose, Col), 1H and 13C NMR spectroscopy, including 2D 1H,1H COSY, TOCSY, ROESY and H-detected 1H,13C HSQC and HMBC experiments. The polysaccharide was found to have a branched pentasaccharide repeating unit with the following structure: Remarkably, the trisaccharide side chain of the O6-polysaccharide represents a colitose ('3-deoxy-l-fucose') analogue of the H type 1 (precursor) antigenic determinant.
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Authors
Olga G. Ovchinnikova, Nina A. Kocharova, Marianna Wykrota, Alexander S. Shashkov, Yuriy A. Knirel, Antoni Rozalski,