化学
肺炎链球菌
多糖
甲基化
立体化学
核磁共振波谱
链球菌
生物化学
微生物学
细菌
DNA
遗传学
抗生素
生物
作者
Karin Leontein,Bengt Lindberg,Jörgen Lōnngren
摘要
The capsular polysaccharide from Streptococcus pneumoniae type 12F is composed of D-glucosyl, D-galactosyl, 2-acetamido-2-deoxy-D-galactosyl, 2-acetamido-2,6-dideoxy-L-galactosyl, and 2-acetamido-2-deoxy-D-mannuronic acid residues in the proportions 2:1:1:1:1. The main structural evidence was adduced from nmr spectroscopy, methylation analysis, and specific degradations whereby it could be concluded that the polysaccharide is composed of hexasaccharide repeating-units having the structure:[Formula: see text]
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