Structural determination of the O-antigenic polysaccharide from Escherichia coli O166.
作者信息
Ali Tara, Weintraub Andrej, Widmalm Göran
机构信息
Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, and Karolinska Institute, Department of Laboratory Medicine, Division of Clinical Bacteriology, Karolinska University Hospital, S-141 86 Stockholm, Sweden.
出版信息
Carbohydr Res. 2007 Feb 5;342(2):274-8. doi: 10.1016/j.carres.2006.11.023. Epub 2006 Nov 29.
UNLABELLED
The O-antigen of the lipopolysaccharide from Escherichia coli O166 has been determined by component analysis together with 1D and 2D NMR spectroscopy techniques. The polysaccharide has pentasaccharide repeating units consisting of D-glucose (1), D-galactose (2) and N-acetyl-D-galactosamine (2) with the following structure: [
STRUCTURE
SEE TEXT]. In the 1H NMR, spectrum resonances of low intensity were observed. Further analysis of these showed that they originate from the terminal part of the polysaccharide, thereby revealing that the repeating unit has a 3-substituted N-acetyl-D-galactosamine residue at its reducing end.
Zotero 插件