Structural studies of the putative O-specific polysaccharide of Serratia marcescens O9.
A polymeric fraction containing the putative O-antigen has been isolated from the lipopolysaccharide of the reference strain (CDC 4534-60) for serogroup O9 of Serratia marcescens. The major component of the fraction was a polymer with a disaccharide repeating-unit of L-rhamnose (Rha) and 2-acetamido-2-deoxy-D-galactose (GalNAc) with the following structure:----3)D-GalpNAc(beta 1----3)L-Rhap(alpha 1----. Evidence for the presence in the fraction of a similar, minor polymer containing 4-substituted rhamnose residues was provided by the NMR spectra, methylation analysis, and Smith degradation.
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D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D011135:Polysaccharides, Bacterial / Q000302:isolation & purification; D012706:Serratia marcescens / Q000254:growth & development / Q000276:immunology*
D011135:Polysaccharides, Bacterial