Structure of the O-specific polysaccharide of the lipopolysaccharide from Yersinia kristensenii O:25.35.

Mild hydrolysis of the lipopolysaccharide (LPS) from Yersinia kristensenii serovar O:25.35 with acid afforded the O-specific polysaccharide (PS) which contained D-glucose, D-galactose, 2-acetamido-2,6-dideoxy-L-galactose, 2-acetamido-2-deoxy-D-glucose, glycerol, and phosphate in the ratios 3:1:1:1:1. On the basis of 31P and 13C NMR spectroscopy, hydrolysis, methylation studies, Smith degradation, and dephosphorylation, the repeating unit of PS was shown to have the following structure. [formula: see text]