Structure of the O-polysaccharide of Escherichia coli O112ab containing L-iduronic acid

Andrei V Perepelov; Bin Liu; Sof'ya N Senchenkova; Alexander S Shashkov; Lu Feng; Yuriy A Knirel; Lei Wang

doi:10.1016/j.carres.2007.10.013

Structure of the O-polysaccharide of Escherichia coli O112ab containing L-iduronic acid

Carbohydr Res. 2008 Feb 25;343(3):571-5. doi: 10.1016/j.carres.2007.10.013. Epub 2007 Oct 24.

Authors

Andrei V Perepelov¹, Bin Liu, Sof'ya N Senchenkova, Alexander S Shashkov, Lu Feng, Yuriy A Knirel, Lei Wang

Affiliation

¹ N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation. perepel@ioc.ac.ru

PMID: 18062946
DOI: 10.1016/j.carres.2007.10.013

Abstract

An acidic O-polysaccharide was isolated by mild acid degradation of the lipopolysaccharide of Escherichia coli O112ab and studied by sugar analysis along with (1)H and (13)C NMR spectroscopy. The O-polysaccharide was found to contain a rarely occurring sugar component, L-iduronic acid (L-IdoA), and the following structure of the branched pentasaccharide repeating unit was established: [structure: see text].

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carbohydrate Conformation
Carbohydrate Sequence
Escherichia coli / chemistry*
Iduronic Acid*
Magnetic Resonance Spectroscopy
Molecular Sequence Data
O Antigens / chemistry*
O Antigens / isolation & purification

Substances

O Antigens
Iduronic Acid