title: Structure of the O-specific polysaccharide of the O23 antigen (LPS) from Escherichia coli O23:K?:H16.
abstract: The polysaccharide moiety of the O23 antigen (lipopolysaccharide) consists of D-glucose, D-galactose, 2-acetamido-2-deoxy-D-glucose, and 2-acetamido-2-deoxy-D-galactose in the molar ratios 2:1:2:1. Methylation analysis of the polysaccharide as well as one- and two-dimensional 1H and 13C NMR spectroscopy of the polysaccharide and a trisaccharide obtained by Smith degradation showed that the O23 polysaccharide has the primary structure [formula: see text].
authors.affiliation: Max-Planck-Institut für Immunobiologie, Freiburg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Bartelt
authors.forename: A S
authors.initials: AS
authors.lastname: Shashkov
authors.forename: H
authors.initials: H
authors.lastname: Kochanowski
authors.forename: B
authors.initials: B
authors.lastname: Jann
authors.forename: K
authors.initials: K
authors.lastname: Jann
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D004926:Escherichia coli / Q000737:chemistry* / Q000254:growth & development / Q000276:immunology; D008070:Lipopolysaccharides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D019081:O Antigens; D011135:Polysaccharides, Bacterial / Q000737:chemistry* / Q000302:isolation & purification; D014312:Trisaccharides / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D008070:Lipopolysaccharides; D019081:O Antigens; D011135:Polysaccharides, Bacterial; D014312:Trisaccharides