Structure of the O-polysaccharide of Photorhabdus luminescens subsp. laumondii containing d-glycero-d-manno-heptose and 3,6-dideoxy-3-formamido-d-glucose

The O-polysaccharide from the lipopolysaccharide of a symbiotic bacterium Photorhabdus luminescens subsp. laumondii TT01 from an insect-pathogenic nematode was studied by sugar analysis and 1H and 13C NMR spectroscopy and found to contain d-glycero-d-manno-heptose (ddHep) and 3,6-dideoxy-3-formamido-d-glucose (d-Qui3NFo). The following structure of the pentasaccharide repeating unit of the O-polysaccharide was established:Figure optionsDownload full-size imageDownload as PowerPoint slide

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