大肠杆菌O168的O-多糖结构与痢疾志贺氏菌4型O-多糖修订结构的密切关系。
Close relation of the O-polysaccharide structure of Escherichia coli O168 and revised structure of the O-polysaccharide of Shigella dysenteriae type 4.
作者信息
Perepelov Andrei V, Liu Bin, Senchenkova Sof'ya N, Shashkov Alexander S, Feng Lu, Knirel Yuriy A, Wang Lei
机构信息
N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation.
出版信息
Carbohydr Res. 2007 Dec 10;342(17):2676-81. doi: 10.1016/j.carres.2007.08.005. Epub 2007 Aug 23.
The O-polysaccharide was isolated from the lipopolysaccharide of Escherichia coli O168 and studied by chemical analyses and Smith degradation along with (1)H and (13)C NMR spectroscopies. The following structure of the branched pentasaccharide repeating unit of the O-polysaccharide was established: [carbohydrate structure: see text] where 6-O-acetylation of GlcNAc is partial. Reinvestigation of the O-polysaccharide of Shigella dysenteriae type 4 established earlier showed it to have the same structure except for that the lateral Fuc residue is nonstoichiometrically O-acetylated at each position.
从大肠杆菌O168的脂多糖中分离出O-多糖，并通过化学分析、史密斯降解以及¹H和¹³C核磁共振光谱进行研究。确定了O-多糖的支链五糖重复单元具有以下结构：[碳水化合物结构：见原文]，其中GlcNAc的6-O-乙酰化是部分的。对先前确定的痢疾志贺氏菌4型的O-多糖进行重新研究发现，除了侧链岩藻糖残基在每个位置的O-乙酰化是非化学计量的外，其结构相同。
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