title: The structure of the carbohydrate backbone of the lipopolysaccharide of Pectinatus frisingensis strain VTT E-79104.
abstract: The structure of the carbohydrate backbone of the lipopolysaccharide from Pectinatus frisingensis strain VTT E-79104 was analyzed using chemical degradations, NMR spectroscopy, mass spectrometry, and chemical methods. The LPS contains two major structural variants, differing in the presence or absence of an octasaccharide fragment. The largest structure of the carbohydrate backbone of the LPS, that could be deduced from experimental results, consists of 20 monosaccharides arranged in a nonrepetitive sequence: [carbohydrate structure: see text] where R is H or 4-O-Me-alpha-L-Fuc-(1-2)-4-O-Me-beta-Hep-(1-3)-alpha-GlcNAc-(1-2)-beta-Man-(1-3)-beta-ManNAc-(1-4)-alpha-Gal-(1-4)-beta-Hep-(1-3)-beta-GalNAc-(1- where Hep is a residue of D-glycero-D-galacto-heptose; all monosaccharides have the D-configuration except for 4-O-Me-L-Fuc and L-Ara4N. This structure is architecturally similar to the oligosaccharide system reported previously in P. frisingensis VTT E-82164 LPS, but differs from the latter in composition and also in the size of the outer region.
authors.affiliation: Institute for Biological Sciences, National Research Council, 100 Sussex Dr., Ottawa ON, Canada K1A 0R6. evguenii.vinogradov@nrc-cnrc.gc.ca
authors.forename: Evgeny
authors.initials: E
authors.lastname: Vinogradov
authors.forename: Jianjun
authors.initials: J
authors.lastname: Li
authors.forename: Irina
authors.initials: I
authors.lastname: Sadovskaya
authors.forename: Said
authors.initials: S
authors.lastname: Jabbouri
authors.forename: Ilkka M
authors.initials: IM
authors.lastname: Helander
mesh_terms: D000107:Acetylation; D001421:Bacteria, Anaerobic / Q000737:chemistry* / Q000235:genetics; D002240:Carbohydrate Sequence; D002851:Chromatography, High Pressure Liquid; D002854:Chromatography, Paper; D004591:Electrophoresis, Polyacrylamide Gel; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D008070:Lipopolysaccharides / Q000737:chemistry* / Q000302:isolation & purification; D013058:Mass Spectrometry; D008969:Molecular Sequence Data; D009005:Monosaccharides / Q000032:analysis / Q000737:chemistry; D019906:Nuclear Magnetic Resonance, Biomolecular; D009844:Oligosaccharides / Q000032:analysis / Q000737:chemistry; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013696:Temperature
chemical_list: D008070:Lipopolysaccharides; D009005:Monosaccharides; D009844:Oligosaccharides