Structure of the O-polysaccharide of Azorhizobium caulinodans HAMBI 216; identification of 3-C-methyl-D-rhamnose as a component of bacterial polysaccharides.

Autor: Zdorovenko EL; N D Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia. zdorovenkoe@mail.ru, Valueva OA, Kachala VV, Shashkov AS, Knirel YA, Komaniecka I, Choma A
Jazyk: angličtina
Zdroj: Carbohydrate research [Carbohydr Res] 2012 Sep 01; Vol. 358, pp. 106-9. Date of Electronic Publication: 2012 Jun 29.
DOI: 10.1016/j.carres.2012.06.012
Abstrakt: 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→ .
(Copyright © 2012 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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