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Structure of a new neutral O-specific polysaccharide of Proteus penneri 34
F V Toukach1, N P Arbatsky, A S Shashkov
1N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation.
Carbohydrate Research
|December 4, 1998
Abstract:
The O-specific polysaccharide of Proteus penneri strain 34 was studied using 1H and 13C NMR spectroscopy, including 2D COSY, TOCSY, NOESY, and H-detected 1H, 13C HMQC experiments. The following structure was established, which is unique among the known structures of Proteus O-antigens:-->4)-beta-D-Glcp-(1-->3)-beta-D-GalpNAc-(1-->4)-beta- D-GalpNAc-(1-->4)-beta-D-Galp-(1-->. Accordingly, no cross-reaction was observed between P. penneri 34 O-antiserum and O-antigens of other Proteus strains. Therefore, the strain studied should belong to a new Proteus serogroup O65.