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Structure of the lipopolysaccharide O-antigen of Pseudomonas cepacia serotype A
1Institute for Biological Sciences, National Research Council, Ottawa, ON, Canada.
Biochemistry and Cell Biology = Biochimie Et Biologie Cellulaire
|September 1, 1993
Abstract:
The O-antigenic polysaccharides of the lipopolysaccharides produced by three isolates of Pseudomonas cepacia serogroup A were analysed by composition, methylation, periodate oxidation, and two-dimensional nuclear magnetic resonance methods. They were found to be identical linear unbranched polymers of a repeating trisaccharide unit containing 2-acetamido-2-deoxy-D-galactose and L-rhamnose residues (2:1) and have the structure [-->3)-alpha-D-GalpNAc-(1-->3)-beta-D-GalpNAc-(1-->4)-alpha-L-Rhap -(1-->]n.