title: Structural elucidation of the O-antigen lipopolysaccharide from two strains of Plesiomonas shigelloides that share a type-specific antigen with Shigella flexneri 6, and the common group 1 antigen with Shigella flexneri spp and Shigella dysenteriae 1.
abstract: Sugar and methylation analyses of native polysaccharides together with one-dimensional 1H- and 13C-NMR spectroscopy revealed that the two polysaccharides from strains 22074 and 12254 of Plesiomonas shigelloides are identical. The structure of the polysaccharide from strain 22074 was deduced from a uronic acid degradation and by NMR spectroscopy where heteronuclear multiple bond connectivity and two-dimensional nuclear Overhauser effect spectroscopy experiments established the pentasaccharide repeating unit as-->4)-alpha-D-GalpA-(1-->3)-alpha-D-GlcpNAc-(1-->3)-alpha-L- Rhap-(1-->2)-alpha-L-Rhap-(1-->2)-alpha-L-Rhap-(1-->.
authors.affiliation: Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, Sweden.
authors.forename: M
authors.initials: M
authors.lastname: Linnerborg
authors.forename: G
authors.initials: G
authors.lastname: Widmalm
authors.forename: A
authors.initials: A
authors.lastname: Weintraub
authors.forename: M J
authors.initials: MJ
authors.lastname: Albert
mesh_terms: D000942:Antigens, Bacterial / Q000737:chemistry*; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D019081:O Antigens; D016981:Plesiomonas / Q000737:chemistry / Q000276:immunology*; D011135:Polysaccharides, Bacterial / Q000737:chemistry*; D012762:Shigella dysenteriae / Q000737:chemistry / Q000276:immunology*; D012763:Shigella flexneri / Q000737:chemistry / Q000276:immunology*
chemical_list: D000942:Antigens, Bacterial; D019081:O Antigens; D011135:Polysaccharides, Bacterial