杨氏柠檬酸杆菌PCM 1538（O9血清群）脂多糖的两种O-多糖结构
Structures of two O-polysaccharides of the lipopolysaccharide of Citrobacter youngae PCM 1538 (serogroup O9).
作者信息
Ovchinnikova Olga G, Kocharova Nina A, Katzenellenbogen Ewa, Zatonsky George V, Shashkov Alexander S, Knirel Yuriy A, Lipiński Tomasz, Gamian Andrzej
机构信息
N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation.
出版信息
Carbohydr Res. 2004 Mar 15;339(4):881-4. doi: 10.1016/j.carres.2003.12.026.
Mild acid degradation of the lipopolysaccharide of Citrobacter youngae O9, strain PCM 1538 released a homopolysaccharide of 4-acetamido-4,6-dideoxy-D-mannose (D-Rha4NAc, N-acetyl-D-perosamine). Studies by methylation analysis and (1)H and (13)C NMR spectroscopy, using two-dimensional (1)H,(1)H COSY, TOCSY, NOESY and H-detected (1)H,(13)C HSQC experiments showed the presence of two structurally different polysaccharides consisting of the following units: -->)-alpha-D-Rhap4NAc-(1 --> and --> 3)-alpha-D-Rhap4NAc-(1 --> 3)-beta-D-Rhap4NAc-(1 -->.
对杨氏柠檬酸杆菌O9菌株PCM 1538的脂多糖进行温和酸降解，释放出一种由4-乙酰氨基-4,6-二脱氧-D-甘露糖（D-Rha4NAc，N-乙酰-D-甘露糖胺）组成的同多糖。通过甲基化分析以及使用二维¹H,¹H COSY、TOCSY、NOESY和¹H检测的¹H,¹³C HSQC实验进行的¹H和¹³C NMR光谱研究表明，存在两种结构不同的多糖，其由以下单元组成：→)-α-D-Rhap4NAc-(1→和→3)-α-D-Rhap4NAc-(1→3)-β-D-Rhap4NAc-(1→。
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