title: Structure of the serotype f polysaccharide antigen of Streptococcus mutans.
abstract: The structure of the serotype f polysaccharide antigen of Streptococcus mutans was determined by methylation analysis, periodate oxidation, and partial methanolysis, and the configuration of the anomeric linkages by 13C-n.m.r. spectroscopy, indicating the trisaccharide repeating unit----3)-alpha-L-Rhap-(1----2)-[alpha-D-Glcp-(1----3)]-alpha-L-+ ++Rhap- (1----. The structure of the backbone of the polysaccharide was confirmed by demonstrating immunological identity between the product of Smith degradation of the S. mutans serotype f antigen and the group A-variant streptococcal polysaccharide.
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D011135:Polysaccharides, Bacterial; D012703:Serotyping; D013295:Streptococcus mutans / Q000276:immunology*
chemical_list: D007202:Indicators and Reagents; D011135:Polysaccharides, Bacterial