[Structure of the O-specific polysaccharide chain of Yersinia aldovae lipopolysaccharide]

O-specific polysaccharide has been isolated on mild hydrolysis of lipopolysaccharide from Yersinia aldovae and shown to consist of 2-acetamido-2-deoxy-D-glucose, D-glucose, 2-acetamido-2-deoxy-D-galactose, and 3,6-dideoxy-3- [(R)-3-hydroxybutyramido]-D-galactose in molar ratio 2:2:1:1. Acid hydrolysis, methylation, solvolysis with anhydrous hydrogen fluoride, 1H and 13C NMR studies indicated the polysaccharide to be composed of hexasaccharide repeating units of the following structure: [formula see text].