title: Structural studies of the O-specific polysaccharide of Hafnia alvei strain 1209 lipopolysaccharide.
abstract: The structure of the O-specific side chains of the Hafnia alvei strain 1209 lipopolysaccharide has been investigated. Methylation analysis and 1H-NMR and 13C-NMR spectroscopy were the principal methods used. It is concluded that the polysaccharide is composed of pentasaccharide repeating units that have the following structure: -->3)-beta-D-Galp-(1-->4)-alpha-D-Glcp-(1-->4)-beta-D-GlepA-(1--> 3)-beta-D-GalpNAc-(1 --> 4 increases 1 alpha-L-Rhap The relative intensity of the signals from the terminal repeating unit in the 1H-NMR spectrum, the amount of 2,3,6-tri-O-methylgalactose in the methylation analysis, and the matrix-assisted laser-desorption ionisation time-of-flight (MALDI-TOF) mass spectrum of the O-polysaccharide indicated that the structure is also the biological repeating unit and that the O-chains mainly consisted of 8-11 repeating units and, on average, ten repeating units.
authors.affiliation: L. Hirszfeld Institute of Immunology and Experimental Therapy, Wroclaw, Poland.
authors.forename: T
authors.initials: T
authors.lastname: Niedziela
authors.forename: C
authors.initials: C
authors.lastname: Petersson
authors.forename: A
authors.initials: A
authors.lastname: Helander
authors.forename: W
authors.initials: W
authors.lastname: Jachymek
authors.forename: L
authors.initials: L
authors.lastname: Kenne
authors.forename: C
authors.initials: C
authors.lastname: Lugowski
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D004755:Enterobacteriaceae / Q000737:chemistry*; D008070:Lipopolysaccharides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D008969:Molecular Sequence Data; D015394:Molecular Structure; D010084:Oxidation-Reduction; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
chemical_list: D008070:Lipopolysaccharides