title: Structure of the O-polysaccharide from the lipopolysaccharide of Providencia alcalifaciens O48.
abstract: An O-polysaccharide was isolated by mild acid degradation of the lipopolysaccharide of Providencia alcalifaciens O48 and studied by sugar and methylation analyses along with (1)H and (13)C NMR spectroscopy, including 2D COSY, TOCSY, ROESY and (1)H,(13)C HSQC and HMBC experiments. It was found that the polysaccharide is acidic and has a linear mono-O-acetylated tetrasaccharide repeating unit with the following structure: →3)-α-D-Manp-(1→2)-α-L-Fucp-(1→2)-β-D-GlcpA4Ac-(1→3)-α-D-GalpNAc-(1→.
authors.affiliation: N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation. olga.ovchinnikova@gmail.com
authors.forename: Olga G
authors.initials: OG
authors.lastname: Ovchinnikova
authors.forename: Nina A
authors.initials: NA
authors.lastname: Kocharova
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Shashkov
authors.forename: Yuriy A
authors.initials: YA
authors.lastname: Knirel
authors.forename: Antoni
authors.initials: A
authors.lastname: Rozalski
mesh_terms: D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D019081:O Antigens / Q000737:chemistry*; D011532:Providencia / Q000737:chemistry*
chemical_list: D019081:O Antigens