Structure of the O-polysaccharide of Escherichia coli O60


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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.

About the authors

A. V. Perepelov

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: yknirel@gmail.com
Russian Federation, 47 Leninsky prosp., Moscow, 119991

O. I. Naumenko

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: yknirel@gmail.com
Russian Federation, 47 Leninsky prosp., Moscow, 119991

S. N. Senchenkova

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: yknirel@gmail.com
Russian Federation, 47 Leninsky prosp., Moscow, 119991

A. S. Shashkov

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: yknirel@gmail.com
Russian Federation, 47 Leninsky prosp., Moscow, 119991

A. O. Chizhov

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: yknirel@gmail.com
Russian Federation, 47 Leninsky prosp., Moscow, 119991

Yu. A. Knirel

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Author for correspondence.
Email: yknirel@gmail.com
Russian Federation, 47 Leninsky prosp., Moscow, 119991

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