title: Separation of 6-deoxy-heptan [correction of 6-deoxy-heptane] from a smooth-type lipopolysaccharide preparation of Burkholderia pseudomallei.
abstract: Smooth-type lipopolysaccharide (LPS) of Burkholderia pseudomallei has been reported to contain two kinds of O-antigenic polysaccharides, a 1,3-linked homopolymer of 6-deoxy-heptose and a polymer with a repeating unit of -->3)-glucose-(1-->3)-6-deoxy-talose-(1--> with O-acetyl or O-methyl modifications. A LPS preparation containing these two polysaccharides was separated by gel-permeation chromatography in this study. Chemical analysis of the separated fractions revealed the 6-deoxy-heptan [corrected] to be a polysaccharide without a lipid portion and the polymer of glucose and 6-deoxy-talose to be an O-antigenic polysaccharide of the LPS. This result was further supported by the assay of these polysaccharide molecules for macrophage activation activity. The 6-deoxy-heptan [corrected] showed no macrophage activation, indicating that this polysaccharide was not the LPS, but one of the capsular polysaccharides of B. pseudomallei.
authors.affiliation: Department of Bacteriology, The Kitasato Institute, Tokyo, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Isshiki
authors.forename: M
authors.initials: M
authors.lastname: Matsuura
authors.forename: S
authors.initials: S
authors.lastname: Dejsirilert
authors.forename: T
authors.initials: T
authors.lastname: Ezaki
authors.forename: K
authors.initials: K
authors.lastname: Kawahara
mesh_terms: D000818:Animals; D016667:Bacterial Capsules / Q000737:chemistry; D016957:Burkholderia pseudomallei / Q000737:chemistry*; D002460:Cell Line; D003837:Deoxy Sugars / Q000737:chemistry* / Q000494:pharmacology; D004591:Electrophoresis, Polyacrylamide Gel; D006539:Heptoses / Q000737:chemistry* / Q000494:pharmacology; D006801:Humans; D008070:Lipopolysaccharides / Q000737:chemistry* / Q000494:pharmacology; D008262:Macrophage Activation; D008264:Macrophages / Q000187:drug effects; D008554:Melioidosis / Q000382:microbiology; D051379:Mice
chemical_list: D003837:Deoxy Sugars; D006539:Heptoses; D008070:Lipopolysaccharides