Structures of the O-polysaccharides of Salmonella enterica O59 and Escherichia coli O15 |
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| Authors: | Perepelov Andrei V Liu Bin Senchenkova Sof'ya N Shashkov Alexander S Guo Dan Feng Lu Knirel Yuriy A Wang Lei |
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| Affiliation: | aN.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation;bTEDA School of Biological Sciences and Biotechnology, Nankai University, TEDA, Tianjin 300457, PR China;cTianjin Key Laboratory for Microbial Functional Genomics, TEDA College, Nankai University, TEDA, Tianjin 300457, PR China |
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| Abstract: | The O-polysaccharide of Salmonella enterica O59 was studied using sugar analysis and 2D 1H and 13C NMR spectroscopy, and the following structure of the tetrasaccharide repeating unit was established:→2)-β-d-Galp-(1→3)-α-d-GlcpNAc-(1→4)-α-l-Rhap-(1→3)-β-d-GlcpNAc-(1→Accordingly, the O-antigen gene cluster of S. enterica O59 includes all genes necessary for the synthesis of this O-polysaccharide. Earlier, another structure has been reported for the O-polysaccharide of Salmonella arizonae (S. enterica IIIb) O59, which later was found to be identical to that of Citrobacter (Citrobacter braakii) O35 and, in this work, also to the O-polysaccharide of Escherichia coli O15. |
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| Keywords: | Salmonella enterica Escherichia coli Bacterial polysaccharide structure O-Antigen gene cluster Lipopolysaccharide |
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