Structure of the O-polysaccharide of Escherichia coli O112ab containing L-iduronic acid.
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].
N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation. perepel@ioc.ac.ru
Andrei V
AV
Perepelov
Bin
B
Liu
Sof'ya N
SN
Senchenkova
Alexander S
AS
Shashkov
Lu
L
Feng
Yuriy A
YA
Knirel
Lei
L
Wang
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D004926:Escherichia coli / Q000737:chemistry*; D007067:Iduronic Acid; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D019081:O Antigens / Q000737:chemistry* / Q000302:isolation & purification
D019081:O Antigens; D007067:Iduronic Acid