Structural studies of the Escherichia coli O-149 O-antigen polysaccharide |
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| Authors: | A Adeyeye P E Jansson B Lindberg S Abaas S B Svenson |
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| Institution: | Department of Organic Chemistry, Arrhenius Laboratory, University of Stockholm, Sweden. |
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| Abstract: | The structure of the O-antigen polysaccharide from Escherichia coli O-149 has been investigated; methylation analysis, partial hydrolysis with acid, and n.m.r. spectroscopy were the principal methods used. It is concluded that the polysaccharide is composed of trisaccharide repeating-units having the following structure. (Formula: see text). The absolute configuration at the acetalic carbon atom of the pyruvic acid residue is S. |
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