title: Structure of the capsular polysaccharide of Klebsiella type 73 (Enterobacter aerogenes).
abstract: The capsular polysaccharide from Klebsiella Type 73 (Enterobacter aerogenes) was found to contain equimolar amounts of D-galactose, D-glucose, L-rhamnose, and D-glucuronic acid. Acid hydrolysis of the polysaccharide gave one aldobio-and one aldotrio-uronic acid, whose structures were established by acid hydrolysis and by methylation analysis. The anomeric configurations of the different sugar residues were determined from the specific rotations of the polysaccharide and the aldobio-and aldotrio-uronic acids, and also by oxidation of the native and the carboxyl-reduced polysaccharide with chromium trioxide. Methylation analysis of the polysaccharide provided information about the linkages of the different sugar residues. Based on all of these results, the structure assigned to the repeating unit of the polysaccharide is as follows. (Formula: see text).
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D055598:Chemical Phenomena; D002621:Chemistry; D004754:Enterobacter / Q000276:immunology*; D004755:Enterobacteriaceae / Q000276:immunology*; D008745:Methylation; D011135:Polysaccharides, Bacterial
chemical_list: D011135:Polysaccharides, Bacterial