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  • Title: Structural studies of the O-antigenic polysaccharides of Escherichia coli O3 and the enteroaggregative Escherichia coli strain 17-2.
    Author: Medina EC, Widmalm G, Weintraub A, Vial PA, Levine MM, Lindberg AA.
    Journal: Eur J Biochem; 1994 Aug 15; 224(1):191-6. PubMed ID: 7521299.
    Abstract:
    The polysaccharide part of the lipopolysaccharide isolated from an enteroaggregative Escherichia coli isolated from a young child with diarrhoea in Santiago, Chile (strain 17-2), has been investigated. Sugar and methylation analyses of native and partially degraded polysaccharide together with 1H-NMR and 13C-NMR spectroscopies revealed that the polysaccharide is composed of pentasaccharide repeating units. The structure of the repeating unit of E. coli strain 17-2 O-polysaccharide is: [formula: see text] The structure of the O-polysaccharide from E. coli O3 was shown to be identical to that of E. coli strain 17-2 by sugar and methylation analyses and by 1H-NMR and 13C-NMR spectroscopies.
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