title: Structure of an extracellular polysaccharide produced by Erwinia chrysanthemi.
abstract: Erwinia chrysanthemi pv zeae strain SR260, a phytopathogen of corn, produced from lactose an acidic extracellular polysaccharide which was purified and found to consist of L-rhamnose, D-mannose, D-glucose, and D-glucuronic acid in the ratio of 3:1:1:1. A combination of chemical (carboxyl-group reduction, methylation analysis, periodate oxidation, Smith degradation, and lithium-ethylenediamine degradation) and physical (1 and 2D NMR spectroscopy) methods revealed that the polysaccharide is composed of a hexasaccharide repeating unit 1: [formula: see text]
authors.affiliation: Department of Biochemistry, University of Fort Hare, Alice, South Africa.
authors.forename: J S
authors.initials: JS
authors.lastname: Gray
authors.forename: J M
authors.initials: JM
authors.lastname: Brand
authors.forename: T A
authors.initials: TA
authors.lastname: Koerner
authors.forename: R
authors.initials: R
authors.lastname: Montgomery
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002241:Carbohydrates / Q000032:analysis; D016974:Dickeya chrysanthemi / Q000737:chemistry / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D008969:Molecular Sequence Data; D009844:Oligosaccharides / Q000737:chemistry* / Q000302:isolation & purification; D011135:Polysaccharides, Bacterial / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D002241:Carbohydrates; D009844:Oligosaccharides; D011135:Polysaccharides, Bacterial