The specific capsular polysaccharide produced by Streptococcus pneumoniae type 20 is composed of D-glucose (three parts), D-galactose (two parts), 2-acetarnido-2-deoxy-D-glucose (one part), phosphate (one part), and O-acetyl (approximately two parts). Methylation, periodate oxidation, optical rotation, nuclear magnetic resonance, partial and enzymic hydrolyses, and chromatographic studies showed that the polysaccharide is a high molecular weight polymer of partially O-acetylated hexasaccharide repeating units linked by monophosphate, having the structure indicated below: [formula: see text].

• Compound ID: 32
  

  b-D-Galf-(1-4)-+ | -6)-a-D-Glcp-(1-6)-b-D-Glcp-(1-3)-b-D-Galf-(1-3)-b-D-Glcp-(1-3)-a-D-GlcpNAc-(1-P-

  Show graphically

  Show legend Show as text

  Structure type: polymer chemical repeating unit
  Compound class: CPS
  Reference(s) to other database(s): GTC:G35314XD, GlycomeDB:16877
  
   
  
  Streptococcus pneumoniae 20
  CSDB ID 112075 (all data & tools)