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1. (Article ID: 1913)
 
Richards JC, Perry MB, Kniskern PJ
The structure of the specific capsular polysaccharide of Streptococcus pneumoniae type 11F (American type 11)
Canadian Journal of Biochemistry and Cell Biology = Revue canadienne de biochimie et biologie cellulaire 63(12) (1985) 953-968
 

The specific polysaccharide of Streptococcus pneumoniae type 11F (American type 11) is composed of 2-acetamido-2-deoxy-D-glucose (one part), D-glucose (one part), D-galactose (two parts), ribitol (one part), phosphate (one part), and O-acetyl (two parts). Hydrolysis, dephosphorylation, periodate oxidation, methylation, optical rotation, and 1H and 13C nuclear magnetic resonance studies showed that the polysaccharide is an unbranched linear polymer of a ribitol-phosphate substituted repeating tetrasaccharide unit having the structure: (Formula: see text). The specific capsular polysaccharides of S. pneumoniae type 11B and 11C (American types 76 and 53) were found to have the same tetrasaccharide repeating unit as the 11F polysaccharide, but differed from it in their mode of O-acetylation and the replacement of the ribitol phosphate by glycerol phosphate in the 11C specific polysaccharide.

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