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The structure of the O-polysaccharide from the lipopolysaccharide of Providencia stuartii O57 containing an amide of D-galacturonic acid with L-alanine |
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| Authors: | Kocharova Nina A Ovchinnikova Olga G Bushmarinov Ivan S Toukach Filip V Torzewska Agnieszka Shashkov Alexander S Knirel Yuriy A Rozalski Antoni |
| Institution: | N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, RUS-119991 Moscow, Russian Federation. |
| Abstract: | The O-polysaccharide (O-antigen) was obtained by mild acid degradation of the lipopolysaccharide of Providencia stuartii O57:H29. Studies by sugar and methylation analyses along with (1)H and (13)C NMR spectroscopy, including two-dimensional (1)H,(1)H COSY, TOCSY, ROESY, H-detected (1)H,(13)C HSQC, and HMBC experiments, showed that the polysaccharide contains an amide of D-galacturonic acid with L-alanine and has the following pentasaccharide repeating unit: formula: see text] |
| Keywords: | Providencia stuartii O-antigen Lipopolysaccharide Polysaccharide structure |
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