Structure of the O-specific polysaccharide of Providencia alcalifaciens O16 containing N-acetylmuramic acid |
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| Authors: | Kocharova Nina A Zatonsky George V Bystrova Olga V Ziolkowski Andrzej Wykrota Marianna Shashkov Aleksander S Knirel Yuriy A Rozalski Antoni |
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| Institution: | ND Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 47, 119991, GSP-1, Moscow, Russia. |
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| Abstract: | The O-specific polysaccharide of Providencia alcalifaciens O16 was obtained by mild-acid degradation of the lipopolysaccharide and studied by chemical methods and NMR spectroscopy, including 2D 1H,(1)H COSY, TOCSY, NOESY, and 1H,(13)C HSQC experiments. It was found that the polysaccharide contains N-acetylmuramic acid, which was isolated by solvolysis with trifluoromethanesulfonic acid and identified by the specific optical rotation and NMR spectroscopy. The following structure of the trisaccharide repeating-unit of the polysaccharide was established: |
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| Keywords: | Lipopolysaccharide O-Specific polysaccharide Bacterial polysaccharide structure N-Acetylmuramic acid Providencia alcalifaciens |
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