STRUCTURE OF THE O-POLYSACCHARIDE OF PROVIDENCIA STUARTII O49

Ivan S. Bushmarinov ^a, Olga G. Ovchinnikova ^a, Nina A. Kocharova ^a, Aleksandra Blaszczyk ^b, Filipp V. Toukach ^a, Agnieszka Torzewska ^b, Alexander S. Shashkov ^a, Yuriy A. Knirel ^a and Antoni Rozalski ^b

^aN. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
^bDepartment of Immunobiology of Bacteria, Institute of Microbiology and Immunology, University of Lodz, Poland

KEYWORDS: lipopolysaccharide, O-polysaccharide, bacterial polysaccharide structure, Providencia stuartii

Carbohydrate Research, 2004, v. 339, pp. 1557-1560

DOI: 10.1016/j.carres.2004.03.021

The O-specific polysaccharide chain (O-antigen) of the lipopolysaccharide (LPS) of Providencia stuartii 049 was studied using sugar and methylation analyses along with ¹H and ¹³C NMR spectroscopy, including two-dimensional COSY, TOCSY, ROESY, H-detected ¹H,¹³C HSQC and HMBC experiments. The polysaccharide was found to have the trisaccharide repeating unit with the following structure:

—>6)bDGalp(l->3)bDGalpNAc(1->4)aDGalp(1->

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