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Eur J Biochem. 1996 Aug 1;239(3):602-10.

Structural and serological characterisation of two O-specific polysaccharides of Acinetobacter.

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1
Division of Biochemical Microbiology, Research Center Borstel, Germany.

Abstract

Extraction of dry bacteria of Acinetobacter strain 34 (DNA group 2) or Acinetobacter strain 108 (DNA group 13) by phenol/water yielded a polymer that was identified by means of serological studies and fatty acid analysis as S-form lipopolysaccharide. Degradation of the lipopolysaccharides of strains 34 and 108 in 1% acetic acid and 5% acetic acid, respectively, and gel-permeation chromatography gave the respective O-antigenic polysaccharides, the structures of which were determined, by compositional analysis and NMR spectroscopy of the polysaccharide, as [Sequence: see text] for strain 108, where D-Fucp3NBuOH represents 3-[(R)-3-hydroxybutyramido] -3,6-dideoxy-D-galactose and D-GalpANAc represents 2-acetamido-2-deoxy-D-galacturonic acid. Both structures were specifically recognised in Western blots by polyclonal rabbit antisera and there was no cross-reaction between these two structures.

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