title: Structure of the O-polysaccharide of Azorhizobium caulinodans HAMBI 216; identification of 3-C-methyl-D-rhamnose as a component of bacterial polysaccharides.
abstract: The O-polysaccharide was obtained from the lipopolysaccharide of the stem-nodulating nitrogen-fixing bacterium Azorhizobium caulinodans HAMBI 216 and studied by sugar and methylation analyses along with (1)H and (13)C NMR spectroscopy. The polysaccharide was found to have a linear pentasaccharide repeating unit containing D-rhamnose and its rarely occurring 2-O-methyl (Rha2OMe) and 3-C-methyl (Rha3CMe) derivatives and having the following structure: →3)-α-D-Rhap2OMe-(1→2)-β-D-Rhap3CMe-(1→3)-α-D-Rhap-(1→2)-β-D-Rhap3CMe-(1→3)-α-D-Rhap-(1→ .
authors: N D Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia. zdorovenkoe@mail.ru
authors: Evelina L
authors: EL
authors: Zdorovenko
authors: Olga A
authors: OA
authors: Valueva
authors: Vadim V
authors: VV
authors: Kachala
authors: Alexander S
authors: AS
authors: Shashkov
authors: Yuriy A
authors: YA
authors: Knirel
authors: Iwona
authors: I
authors: Komaniecka
authors: Adam
authors: A
authors: Choma
mesh_terms: D020599:Azorhizobium caulinodans / Q000737:chemistry*; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D011135:Polysaccharides, Bacterial / Q000737:chemistry*; D012210:Rhamnose / Q000737:chemistry*
chemical_list: D011135:Polysaccharides, Bacterial; D012210:Rhamnose