Structure of the O-specific polysaccharide of Proteus vulgaris O45 containing 3-acetamido-3,6-dideoxy-D-galactose.
An O-specific polysaccharide was isolated by mild acid degradation of the lipopolysaccharide of Proteus vulgaris O45 and studied by sugar and methylation analyses along with 1H and 13C NMR spectroscopy, including 2D COSY, TOCSY, ROESY, H-detected 1H,13C HSQC and HMBC experiments. The following structure of the pentasaccharide repeating unit of the polysaccharide was established:-->6)-alpha-D-GlcpNAc-(1-->4)-alpha-D-GalpNAc-(1-->4)-alpha-D-GalpA-(1-->3)-beta-D-GlcpNAc-(1-->2)-beta-D-Fucp3NAc4Ac-(1-->where Fuc3NAc4Ac is 3-acetamido-4-O-acetyl-3,6-dideoxygalactose. A cross-reactivity of anti-P. vulgaris O45 serum was observed with several other Proteus lipopolysaccharides, which contains Fuc3N derivatives.
Perepelov
Andrei V
AV
N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russian Federation. perepel@ioc.ac.ru
Bartodziejska
Beata
B
Senchenkova
Sof'ya N
SN
Shashkov
Alexander S
AS
Rozalski
Antoni
A
Knirel
Yuriy A
YA
D000116:Acetylgalactosamine / Q000031:analogs & derivatives; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002241:Carbohydrates / Q000032:analysis; D005643:Fucose / Q000737:chemistry / Q000031:analogs & derivatives; D008969:Molecular Sequence Data; D009005:Monosaccharides / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D019081:O Antigens / Q000737:chemistry* / Q000302:isolation & purification; D011514:Proteus vulgaris / Q000737:chemistry*
C478186:3-acetamido-3,6-dideoxy-D-galactose; D002241:Carbohydrates; D009005:Monosaccharides; D019081:O Antigens; D005643:Fucose; D000116:Acetylgalactosamine