The structure of the core oligosaccharide region of the lipopolysaccharide from the Pasteurella multocida strain X73 was elucidated. The lipopolysaccharide was subjected to a variety of degradative procedures. The structure of the purified oligosaccharide was established by monosaccharide and methylation analyses, NMR spectroscopy and mass spectrometry. The following structure illustrates a similar structure to the recently identified oligosaccharide from another P. multocida strain VP161, but with additional symmetrical substitution of the terminal galactose residues with phosphoethanolamine moieties, where based on the NMR data all sugars were found in pyranose ring forms and Kdo is 3-deoxy-α-D-manno-2-oct-2-ulosonic acid, l,d-α-Hep is l-glycero-d-manno-heptose, PEtn is phosphoethanolamine and PCho is phosphocholine
Lipopolysaccharide, NMR, L-glycero-D-manno-heptose, oligosaccharide, structure, core, strain, structural, terminal, analysis, Research, form, acid, Kdo, core oligosaccharide, NMR spectroscopy, spectrometry, biological, structural analysis, sugar, region, mass spectrometry, methylation, spectroscopy, Phosphocholine, phosphoethanolamine, purified, sugars, galactose, monosaccharide, Pasteurella multocida, pyranose, ring, substitution, Pasteurella, P
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