title: Structure of a new 6-deoxy-alpha-D-talan from Burkholderia (Pseudomonas) plantarii strain DSM 6535, which is different from the O-chain of the lipopolysaccharide.
abstract: An O-acetylated homopolysaccharide of 6-deoxy-D-talose (6-deoxy-alpha-D-talan polymer) was isolated from Burkholderia (Pseudomonas) plantarii strain DSM 6535 by extraction with 2-propanol. The structure (1) of the trisaccharide repeating unit of the polysaccharide was established by studies of the intact and O-deacetylated polysaccharides using methanolysis, methylation analysis, 1H and 13C NMR spectroscopy, including 2D COSY, heteronuclear 13C, 1H COSY, 1D NOE, and computer-assisted analysis of 1D 13C NMR spectra. The remaining material after extraction of the biomass with 2-propanol showed to be a lipopolysaccharide with an O-specific polysaccharide chain having a different structure (2), which has been found previously in lipopolysaccharides of a number of other Gram-negative bacteria. [formula: see text]
authors.affiliation: Forschungszentrum Borstel, Zentrum für Medizin und Biowissenschaften, Germany.
authors.forename: U
authors.initials: U
authors.lastname: Zähringer
authors.forename: H
authors.initials: H
authors.lastname: Rettenmaier
authors.forename: H
authors.initials: H
authors.lastname: Moll
authors.forename: S N
authors.initials: SN
authors.lastname: Senchenkova
authors.forename: Y A
authors.initials: YA
authors.lastname: Knirel
mesh_terms: D000942:Antigens, Bacterial / Q000737:chemistry*; D019117:Burkholderia / Q000737:chemistry*; D002240:Carbohydrate Sequence; D008070:Lipopolysaccharides / Q000737:chemistry*; D008969:Molecular Sequence Data; D015394:Molecular Structure; D011134:Polysaccharides / Q000737:chemistry*
chemical_list: C070694:6-deoxytalan; D000942:Antigens, Bacterial; D008070:Lipopolysaccharides; D011134:Polysaccharides