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The linkage of phosphate groups and of 2-keto-3-deoxyoctonate to the lipid A component in a Salmonella minnesota lipopolysaccharide.

From the lipid A backbone of Salmonella lipopolysaccharide, β-1,6-linked glucosamine disaccharides had been isolated previously, which were substituted at the non-reducing glucosamine unit with phosphate and 2-keto-3-deoxyoctonate residues. The results now obtained by periodate degradation show that the phosphate group is linked to the 4 position and the 2-keto-3-deoxy-octonate oligosaccharide probably to the 3 position of the non-reducing glucosamine unit.