title: Structural determination of the capsular polysaccharide of Streptococcus pneumoniae type 18C (56).
abstract: The specific capsular polysaccharide of Streptococcus pneumoniae type 18C (56) contains D-glucose, D-galactose, L-rhamnose, and glycerol residues, and phosphate and O-acetyl groups in the molar ratios of 3:1:1:1:1:1. Accumulated data from methylation analyses of the native and the specifically degraded, native polysaccharide indicated that it is composed of the repeating unit shown; it also contains O-acetyl groups, of undetermined location, in the molar ratio to L-rhamnose of 1:1. (formula; see text).
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D005690:Galactose / Q000032:analysis; D005947:Glucose / Q000032:analysis; D005990:Glycerol / Q000032:analysis; D010710:Phosphates / Q000032:analysis; D011135:Polysaccharides, Bacterial / Q000302:isolation & purification*; D012210:Rhamnose / Q000032:analysis; D013296:Streptococcus pneumoniae / Q000276:immunology*
chemical_list: D010710:Phosphates; D011135:Polysaccharides, Bacterial; D005947:Glucose; D005990:Glycerol; D012210:Rhamnose; D005690:Galactose