O-specific polysaccharide structure of the aqueous lipopolysaccharide fraction from Xanthomonas campestris pv. vitians strain 1839

The structure of Xanthomonas campestris pv. vitians O-specific polysaccharide of the lipopolysaccharide fraction, extracted from the aqueous phase, was defined, on the basis of chemical and spectroscopical methods, as constituted by the following repeating unit:[→3)-α-l-Rhap-(1→]n3)-β-l-Rhap-(1→where n is more frequently equal to 2, but it also assumes values equal to 1 and to 3.