Structure of the O-specific polysaccharide from the legume endosymbiotic bacterium Ochrobactrum cytisi strain ESC1(T)

The O-specific polysaccharide was obtained from the lipopolysaccharide of the legume-endosymbiotic bacterium Ochrobactrum cytisi strain ESC1(T) and studied by chemical analyses and 1D and 2D NMR spectroscopy. The polysaccharide was found to have a disaccharide repeating unit containing α-d-fucose an...

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Bibliographic Details
Published in:Carbohydrate research 2015-09, Vol.413, p.37-40
Main Authors: Pac, Malgorzata, Komaniecka, Iwona, Zamlynska, Katarzyna, Turska-Szewczuk, Anna, Choma, Adam
Format: Article
Language:English
Subjects:
Carbohydrate Sequence
Fabaceae - microbiology
Molecular Sequence Data
O Antigens - chemistry
O Antigens - isolation & purification
Ochrobactrum - chemistry
Ochrobactrum - physiology
Symbiosis
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Summary:The O-specific polysaccharide was obtained from the lipopolysaccharide of the legume-endosymbiotic bacterium Ochrobactrum cytisi strain ESC1(T) and studied by chemical analyses and 1D and 2D NMR spectroscopy. The polysaccharide was found to have a disaccharide repeating unit containing α-d-fucose and β-N-acetyl-d-galactosamine residues connected via (1→3)-glycosidic bonds, resulting in the following structure: →3)-α-d-Fucp-(1→3)-β-d-GalpNAc-(1→ The d-GalpNAc residue was nonstoichiometrically substituted with a 4-O-methyl group (∼10%) or with a 4,6-O-(1-carboxy)-ethylidene residue (pyruvyl group) (∼10%).
ISSN:1873-426X
DOI:10.1016/j.carres.2015.05.002