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[Further types of core lipopolysaccharides in Proteus].

Comparative analysis of the chemical composition of 11 core oligosaccharides isolated from lipopolysaccharides of the wild (S) and phenotypically rough (R) strains Proteus mirabilis (nine) and Proteus vulgaris (two) allowed to recognize three new types Proteus core, classified as IV, V, VI. All of them contained D-galactose and D-galactosamine in addition to common core constituents: D-glucose, D-galacturonic acid, L-glycero-D-manno-heptose, KDO, EtN described for Proteus core types I, II, III (6, 7, 8). D-glucosamine was characteristic for Proteus core type VI whereas D-glycero-D-manno-heptose for types V and VI.