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1. (Article ID: 3312)
 
Zhao G, Perepelov AV, Senchenkova SN, Shashkov AS, Feng L, Li X, Knirel YA, Wang L
Structural relation of the antigenic polysaccharides of Escherichia coli O40, Shigella dysenteriae type 9, and E. coli K47
Carbohydrate Research 342(9) (2007) 1275-1279
 

O-Polysaccharides were isolated from the lipopolysaccharides of Escherichia coli O40 and Shigella dysenteriae type 9 andstudied by chemical analyses along with 1H and 13C NMR spectroscopy. The following new structure of the O-polysaccharide ofE. coli O40 was established: →2)-β-d-Galp-(1→4)-β-d-Manp-(1→4)-α-d-Galp-(1→3)-β-d-GlcpNAc-(1→. The O-polysaccharide structure of S. dysenteriae type 9 established earlier was revised and found to be identical to the reported structure of the capsular polysaccharide of E. coli K47 and to di.er from that of the E. coli O40 polysaccharide in the presenceof a 3,4-linked pyruvic acid acetal having the (R)-configuration (RPyr): →2)-β-d-Galp3,4(RPyr)-(1→4)-β-d-Manp-(1→4)-α-d-Galp-(1→3)-β-d-GlcpNAc-(1→.

O-antigen, Escherichia coli, bacterial polysaccharide structure, Shigella dysenteriae, Pyruvic acid acetal

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