Structure of the O-specific polysaccharide from the lipopolysaccharide of Citrobacter gillenii O11, strain PCM 1540 |
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Authors: | Katzenellenbogen Ewa Kocharova Nina A Zatonsky George V Bogulska Maria Rybka Jacek Gamian Andrzej Shashkov Alexander S Knirel Yuriy A |
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Affiliation: | Polish Academy of Sciences, L. Hirszfeld Institute of Immunology and Experimental Therapy, Weigla 12, 53-114, Wroc?aw, Poland. katzenel@iitd.pan.wroc.pl |
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Abstract: | The O-specific polysaccharide of the lipopolysaccharide of Citrobacter gillenii PCM 1540 (serogroup O11) consists of D-Glc, D-Man, D-GalNAc, D-GlcNAc, 2-acetamido-2,6-dideoxy-D-galactose (D-FucNAc) and O-acetyl groups in the ratios 2:1:1:1:1:1. On the basis of sugar and methylation analyses and Smith-degradation along with 1D and 2D 1H and 13C NMR spectroscopy, the following structure of the branched hexasaccharide repeating unit was established: [structure: see text]. Citrobacter werkmanii PCM 1541 belonging to the same serogroup O11 was found to have an R-form lipopolysaccharide devoid of the O-specific polysaccharide. |
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Keywords: | Citrobacter gillenii O-Antigen Lipopolysaccharide Bacterial polysaccharide structures Serological classification |
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