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1. (Article ID: 1778)
 
Knirel YA, Kochetkov NK
The structure of lipopolysaccharides of gram-negative bacteria. III. The structure of O-antigens: A review
Biochemistry (Moscow) 59(12) (1994) 1325-1383
 

This review summarizes data on the composition and structure of the O-antigens, the polysaccharide chains of the outer-membrane lipopolysaccharides (LPS) of Gram-negative bacteria defining the immunospecificity of these microbial cells. Special reference is given to some structural features of the O-antigens, such as the presence of unique monosaccharides and noncarbohydrate components, masked regularity, and the occurrence in one microorganism of LPS with structurally different polysaccharide chains. Antigenic relationships between microorganisms belonging to different taxonomic groups are discussed.

structure, O-antigen, chemical composition, bacterial lipopolysaccharides, Salmonella livingstone C1

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2. (Article ID: 2154)
 
Cox AD, Wilkinson SG
Structures of the O-specific polymers from the lipopolysaccharides of the reference strains for Pseudomonas cepacia serogroups O3 and O5
Carbohydrate Research 195 (1989) 123-129
 

The putative O-specific polymers of lipopolysaccharides from two reference strains of Pseudomonas cepacia have been isolated and characterized. Both polymers have disaccharide repeating-units. Structure 1 was established for the O3 polymer, and structure 2 for the O5 polymer. Polymers with the same repeating units have been found previously as the O antigens of other bacteria. →2)-β-D-Ribf-(1→4)-α-D-GalpNAc-(1→ →4)-α-L-Rhap-(1→3)-β-D-ManpNAc-(1→.

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