title: Structural studies of the capsular antigen from Streptococcus pneumoniae type 26.
abstract: The structure of the capsular antigen from Pneumococcus type 26 has been determined by using methylation analysis, periodate-oxidation studies, and n.m.r. spectroscopy of the original and the dephosphorylated product. It is considered that the polysaccharide is composed of repeating-units having the following structure. (formula: see text): The only difference between this structure and that of the type-6 antigen is that the alpha-L-rhamnopyranosyl residue is linked to O-4 of D-ribitol in the former, but to O-3 in the latter.
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D009844:Oligosaccharides / Q000032:analysis; D011135:Polysaccharides, Bacterial; D013296:Streptococcus pneumoniae / Q000276:immunology*
chemical_list: D009844:Oligosaccharides; D011135:Polysaccharides, Bacterial