The specific capsular polysaccharide produced by Streptococcus pneumoniae type 9V (American type 68) is composed of D-glucuronic acid (1 part), D-galactose (1 part), 2-acetamido-2-deoxy-D-mannose (1 part), D-glucose (2 parts), and O-acetyl (1.6 parts). Methylation, periodate oxidation, optical rotation, and nuclear magnetic resonance studies, and partial hydrolysis showed that the polysaccharide is an unbranched high molecular weight linear polymer of a partially O-acetylated pentasaccharide repeating unit having the structure indicated below. (Formula: see text].

• Compound ID: 4949
  

  -4)-a-D-GlcpA2Ac-(1-3)-a-D-Galp-(1-3)-b-D-ManpNAc-(1-4)-b-D-Glcp2Ac-(1-4)-a-D-Glcp-(1-

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  Structure type: polymer chemical repeating unit
  Compound class: CPS
  Reference(s) to other database(s): GTC:G26657XU, GlycomeDB:4568
  
   
  
  Streptococcus pneumoniae 9V
  CSDB ID 112065 (all data & tools)