Structure of the O-polysaccharide of  Escherichia coli  O60

A. V. Perepelov; O. I. Naumenko; S. N. Senchenkova; A. S. Shashkov; A. O. Chizhov; Yu. A. Knirel

doi:10.1007/s11172-018-2340-z

Structure of the O-polysaccharide of Escherichia coli O60

Authors: Perepelov A.V.¹, Naumenko O.I.¹, Senchenkova S.N.¹, Shashkov A.S.¹, Chizhov A.O.¹, Knirel Y.A.¹
Affiliations:
1. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences
Issue: Vol 67, No 11 (2018)
Pages: 2131-2134
Section: Full Articles
URL: https://journals.rcsi.science/1066-5285/article/view/243201
DOI: https://doi.org/10.1007/s11172-018-2340-z
ID: 243201

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Abstract

Structure of the O-polysaccharide (O-antigen) of Escherichia coli O60 was studied by sugar analysis, partial solvolysis with CF₃CO₂H, and ¹D and 2D ¹H and ¹³C NMR spectroscopy. The O-polysaccharide was found to consist of D-galactose and L-rhamnose. The structure of its branched tetrasaccharide repeating unit was established, which is unique among known bacterial polysaccharide structures.