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  • Title: Full NMR assignment and revised structure for the capsular polysaccharide from Streptococcus pneumoniae type 15B.
    Author: Jones C, Lemercinier X.
    Journal: Carbohydr Res; 2005 Feb 28; 340(3):403-9. PubMed ID: 15680595.
    Abstract:
    The capsular polysaccharide from Streptococcus pneumoniae Type 15B is a component of the 23-valent polysaccharide vaccine against pneumococcal disease. We report full NMR assignments for the native and de-O-acetylated polysaccharide, and confirm that the phosphorylated substituent is glycerol-2-phosphate rather than phosphocholine, located on O-3 of the side chain beta-Galp residue. The polysaccharide is O-acetylated on the terminal alpha-Gal residue, distributed between O-2, O-3, O-4 and O-6 in a ratio of 6:12:12:55, with approximately 15% of the repeat units not O-acetylated.
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