来自远缘链球菌B13和6715-T2的鼠李糖-葡萄糖多糖抗原的结构研究。
Structural studies of the rhamnose-glucose polysaccharide antigen from Streptococcus sobrinus B13 and 6715-T2.
作者信息
Linzer R, Reddy M S, Levine M J
出版信息
Infect Immun. 1985 Nov;50(2):583-5. doi: 10.1128/iai.50.2.583-585.1985.
Abstract
The rhamnose-glucose polysaccharide antigens from the cell walls of Streptococcus sobrinus B13 and 6715-T2 (formerly Streptococcus mutans serotypes d and g, respectively) were structurally examined by using gas chromatography-mass spectroscopy. These data confirmed earlier chemical and serological studies suggesting that these polysaccharides had identical structures. The polysaccharides appeared to have a backbone of alternating 1,2- and 1,3-linked rhamnose units. Branching occurred at 1,2,3-linked rhamnose units. Side chains appeared to be composed of 1,2- and 1,6-linked glucose units with glucose as the only terminal carbohydrate.
摘要
利用气相色谱 - 质谱联用技术对远缘链球菌B13和6715 - T2（以前分别为变形链球菌血清型d和g）细胞壁中的鼠李糖 - 葡萄糖多糖抗原进行了结构分析。这些数据证实了早期的化学和血清学研究，表明这些多糖具有相同的结构。多糖似乎具有由1,2 - 连接和1,3 - 连接的鼠李糖单元交替组成的主链。分支发生在1,2,3 - 连接的鼠李糖单元处。侧链似乎由1,2 - 连接和1,6 - 连接的葡萄糖单元组成，且葡萄糖是唯一的末端碳水化合物。
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