title: Structure of the Escherichia coli 0104 polysaccharide and its identity with the capsular K9 polysaccharide.
abstract: The 0104 antigen (lipopolysaccharide, LPS) of Escherichia coli has an acidic O specific polysaccharide. From the aqueous phase of a phenol water extraction of E. coli O104: K-, a fraction was obtained by ultracentrifugation and Cetavlon precipitation of the supernatant, which was enriched in long-chain LPS. Compositional analysis, NMR spectroscopy, periodate oxidation and methylation analysis showed that the polysaccharide chain of O104 LPS II consisted of galactose, N-acetylgalactosamine and neuraminic acid and acetate in the molar ratio of 2:1:1:1 and contained 3-beta Gal, 3-beta GalNAc, 4-alpha Gal, and 4-alpha(9-OAc-NeuNAc) in linear sequence. The same results were obtained with the capsular K9 polysaccharide from E. coli O9:K9, as presented here and reported previously (Dutton et al. (1987) Carbohydr. Res. 170, 193-206).
authors.affiliation: Max-Planck-Institut für Immunbiologie, Freiburg, F.R.G.
authors.forename: G
authors.initials: G
authors.lastname: Kogan
authors.forename: B
authors.initials: B
authors.lastname: Jann
authors.forename: K
authors.initials: K
authors.lastname: Jann
mesh_terms: D016667:Bacterial Capsules / Q000737:chemistry*; D002240:Carbohydrate Sequence; D003429:Cross Reactions; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D008969:Molecular Sequence Data; D011135:Polysaccharides, Bacterial / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D011135:Polysaccharides, Bacterial