Journal
CARBOHYDRATE RESEARCH
Volume 386, Issue -, Pages 68-72Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2013.08.011
Keywords
Burkholderia oklahomensis; O-antigen; Lipopolysaccharide; Exopolysaccharide; NMR; Structure
Funding
- United States Department of Homeland Security [HSHQDC-10-C-00135]
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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 H-1 and C-13 NMR spectroscopy showed that the O-antigen was a repeating disaccharide with the following structure: [3)-beta-D-Glcp-(1 -> 3)-2OAc-alpha-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-beta-D-Galp-(1 -> 4)-alpha-D-Galp-(1 -> 3)-beta-D-Galp-(1 -> 5)-beta-D-Kdop-(2 ->](n). (C) 2013 Elsevier Ltd. All rights reserved.
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