title: Structure of the O56 antigen of Escherichia coli, a polysaccharide containing 7-substituted alpha-N-acetylneuraminic acid.
abstract: The O56 polysaccharide moiety of the O56 antigen (LPS) consists of D-glucose, D-galactose, 2-acetamido-2-deoxy-D-glucose, and N-acetylneuraminic acid in the molar ratios 1:1:1:1. Methylation analysis, periodate oxidation, mild acid hydrolysis, as well as 1H and 13C NMR spectroscopy showed that the O56 polysaccharide has the primary structure [formula: see text]
authors.affiliation: Max-Planck-Institut für Immunbiologie, Freiburg-Zähringen, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Kogan
authors.forename: A S
authors.initials: AS
authors.lastname: Shashkov
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*; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D008969:Molecular Sequence Data; D019158:N-Acetylneuraminic Acid; D019081:O Antigens; D009844:Oligosaccharides / Q000737:chemistry / Q000302:isolation & purification; D011135:Polysaccharides, Bacterial / Q000737:chemistry* / Q000302:isolation & purification; D012794:Sialic Acids / Q000737:chemistry*
chemical_list: D019081:O Antigens; D009844:Oligosaccharides; D011135:Polysaccharides, Bacterial; D012794:Sialic Acids; D019158:N-Acetylneuraminic Acid