Abstract
Incubation of lipopolysacchride from Salmonella riogrande with A decomposing enzyme preparation of hog liver resulted in the liberation of 15.5% N-acetylgalactosamine and the lipopolysaccharide lost its serological activity with anti-A rabbit serum immunized with S. riogrande.
On the basis of the isolated oligosaccharides, it was proposed that the lipopolysaccharide of S. riogrande contains the following blood-group A active structure :
α-N-acetylgalactosaminyl-(1→3)-mannosyl-glucosyl-(1→3)-N-acetylgalactosaminyl-glucose
