Structure of the lipopolysaccharide core region of Hafnia alvei strains 1185 and 1204

Abstract

Sugar and methylation analyses using gas chromatography/mass spectrometry and NMR spectroscopy proved that the core oligosaccharides of Hafnia alvei strains 1185 and 1204 have the following formula: where Kdo=3-deoxy-oct-2-ulosonic acid and PPEtN=diphosphorylethanolamine. The structure shown above is a slight modification of the typical core region of H. alvei lipopolysaccharides. The difference refers to one sugar only: terminal galactose is present in the core of strains of 1185 and 1204, while terminal glucose in the typical core.