Abstract

A phosphorylated O-polysaccharide was isolated from the lipopolysaccharide of an entomopathogenic bacterium Photorhabdus temperata subsp. cinerea 3240 and studied by sugar analysis, dephosphorylation, and 1H and 13C NMR spectroscopy. The following structure of the linear trisaccharide repeating unit of the O-polysaccharide was established:→3)-β-d-GalpNAc4PEtN-(1→4)-β-d-GlcpA-(1→3)-β-d-FucpNAc4N-(1→where GlcA indicates glucuronic acid, FucNAc4N 2-acetamido-4-amino-2,4,6-trideoxygalactose, and PEtN 2-aminoethyl phosphate.

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