Structural characterization of polysaccharides expressed by Burkholderia oklahomensis E0147

Joshua K. Stone, Christian Heiss, Zhirui Wang, Ian Black, Stephanie A. Grasso, Andrew T. Koppisch, Parastoo Azadi, Paul Keim, Apichai Tuanyok

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Burkholderia oklahomensis E0147 is a US isolated bacterium believed to express a similar O-antigen to type A structure of the highly pathogenic species, Burkholderia pseudomallei. Both species are genetically closely related. Lipopolysaccharide was collected from E0147 and structurally characterized to test this hypothesis. Glycosyl composition and linkage analyses in conjunction with 1D and 2D 1H and 13C NMR spectroscopy showed that the O-antigen was a repeating disaccharide with the following structure: [3)-β-d-Glcp-(1→3)-2OAc-α-l-6dTalp-(1→] n NMR spectroscopy also revealed the presence of a co-extracted exopolysaccharide previously described in B. pseudomallei, with the structure: [3)-2OAc-β-d-Galp-(1→4)-α-d-Galp-(1→3)-β-d-Galp- (1→5)-β-d-Kdop-(2→]n.

Original languageEnglish (US)
Pages (from-to)68-72
Number of pages5
JournalCarbohydrate Research
Volume386
Issue number1
DOIs
StatePublished - Mar 11 2014

Keywords

  • Burkholderia oklahomensis
  • Exopolysaccharide
  • Lipopolysaccharide
  • NMR
  • O-antigen
  • Structure

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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