Abstract
Further details of the structure of the capsular polysaccharide (SV) of Pneumococcus Type V have been elucidated by methylation studies and by oxidation with periodate. It is proposed that the polysaccharide contains multiple residues of 2-acetamido-2,6-dideoxy-3- O-( Dglucopyranosyluronic acid)- L-galactose, to which are attached residues of D-glucose and 2-acetamido-2,6-dideoxy- L-talose N-acetyl- L- pneumosamine). Residues of 2-acetamido-2,6-dideoxy- L-galactose N-acetyl- L-fucosamine) constitute branch points, and pneumosamine residues are present mainly as non-reducing end-groups. The majority of the D-glucose and D-glucuronic acid residues are 1,4- and 1,2-linked, respectively. The immunochemistry of SV is reviewed in the light of these findings.
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