Structural characterization of the serotype O:5 O-polysaccharide antigen of the lipopolysaccharide of Escherichia coli O:5

被引:0
|
作者
MacLean, LL [1 ]
Perry, MB [1 ]
机构
[1] NATL RES COUNCIL CANADA,INST BIOL SCI,OTTAWA,ON K1A 0R6,CANADA
关键词
Escherichia coli; lipopolysaccharide; polysaccharide; O antigen; NMR;
D O I
暂无
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The structure of the antigenic O-polysaccharide component of the smooth lipopolysaccharide produced by Escherichia coli serotype O:5 was investigated by composition, methylation, and periodate oxidation methods, and by 1D and 2D nuclear magnetic resonance spectroscopy. The antigenic O-chain was determined to be a high molecular weight polysaccharide composed of repeating tetrasaccharide units containing 2-acetamido-2-deoxy-D-galactose, D-galactose, D-ribose, and 3-acetamido-3,6-dideoxy-D-glucose and having the structure -[-4)-beta-D-Galp-(1-3)-alpha-D-GalpNAc-(1-4)-beta-D-Quinp3NAc-(1-3)-beta-D-Ribf-(1-]-.
引用
收藏
页码:199 / 205
页数:7
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