Structure of a galactan from cell walls of Bifidobacterium catenulatum YIT4016

A structural study was carried out on a galactose-rich polysaccharide fraction isolated from cell walls of Bifidobacterium catenulatum YIT4016 after N-acetylmuramidase digestion. The polysaccharide contained galactose and glucosamine in a molar ratio of 16.9:1.0. Data obtained by 13C NMR spectroscop...

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Bibliographic Details
Published in:Carbohydrate research 1996-02, Vol.281 (2), p.285-291
Main Authors: Nagaoka, Masato, Hashimoto, Shusuke, Shibata, Hideyuki, Kimura, Itsuko, Kimura, Kazumasa, Sawada, Haruji, Yokokura, Teruo
Format: Article
Language:English
Subjects:
Bifidobacteria
Bifidobacterium - chemistry
Bifidobacterium - ultrastructure
Carbohydrate Sequence
Cell wall
Cell Wall - chemistry
Galactan
Galactans - chemistry
Glycoside Hydrolases
Magnetic Resonance Spectroscopy
Molecular Sequence Data
Molecular Structure
Polysaccharides - chemistry
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Summary:A structural study was carried out on a galactose-rich polysaccharide fraction isolated from cell walls of Bifidobacterium catenulatum YIT4016 after N-acetylmuramidase digestion. The polysaccharide contained galactose and glucosamine in a molar ratio of 16.9:1.0. Data obtained by 13C NMR spectroscopy showed that the backbone chain of this polysaccharide is composed of galactofuranose residues, while the branches consist of galactopyranosyl residues. Furthermore, the data obtained from NaIO 4 oxidation, partial methanolysis and methylation analysis indicated that this polysaccharide consists of a trisaccharide repeating unit having the following structure: [→6) βminus; D− Galf− D− Galf(1→] n
ISSN:0008-6215
1873-426X
DOI:10.1016/0008-6215(95)00354-1