大肠杆菌O90 O抗原多糖的结构研究。

Structural studies of the Escherichia coli O90 O-antigen polysaccharide.

作者信息

Ratnayake S, Widmalm G, Weintraub A, Medina E C

机构信息

Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, Sweden.

出版信息

Carbohydr Res. 1994 Oct 17;263(2):209-15. doi: 10.1016/0008-6215(94)00152-9.

DOI:10.1016/0008-6215(94)00152-9

PMID:7528639

Abstract

The O-specific side-chain of the lipopolysaccharide from Escherichia coli O90 has been investigated using methylation analysis, partial hydrolysis, and NMR spectroscopy as the principal methods. It is concluded that the polysaccharide is composed of tetrasaccharide repeating-units having the following structure. [formula: see text] The polysaccharide contains approximately one mole of O-acetyl groups per repeating unit, located on the fucose residue.

摘要

已使用甲基化分析、部分水解和核磁共振光谱法作为主要方法对来自大肠杆菌O90的脂多糖的O-特异性侧链进行了研究。得出的结论是，该多糖由具有以下结构的四糖重复单元组成。[分子式：见原文]该多糖每个重复单元含有约一摩尔的O-乙酰基，位于岩藻糖残基上。