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Structural investigation of the capsular polysaccharide of Escherichia coli O101 : K103 : H− using bacteriophage degradation and NMR spectroscopy

✍ Scribed by M.Ruth Grue; Haralambos Parolis; Lesley A.S. Parolis

Publisher
Elsevier Science
Year
1994
Tongue
English
Volume
262
Category
Article
ISSN
0008-6215

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✦ Synopsis

NMR spectroscopy was performed on the depyruvated capsular antigen of E. coli K103 and on the oligosaccharide obtained by depolymerisation of the native polysaccharide with a viral-borne endoglycanase. This capsular polysaccharide is the only one to be co-expressed with O group 101 and joins a small group of unusual capsular polysaccharides which possess pyruvic acid as the only acidic function. The primary structure was shown to be composed of the repeating unit: [formula: see text]

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