Structural studies of the extracellular polysaccharide from Butyrivibrio fibrisolvens strain 49

The structure of Butyrivibrio fibrisolvens strain 49 capsular polysaccharide has been investigated mainly by sugar and methylation analysis, partial chemical degradations. NMR spectroscopy, and mass spectrometry. The results suggest that the polysaccharide is composed of pentasaccharide repeating un...

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Bibliographic Details
Published in:Carbohydrate research 1995-11, Vol.278 (1), p.143-153
Main Authors: Ferreira, Fernando, Andersson, Mats, Kenne, Lennart, Cotta, Michael A., Stack, Robert J.
Format: Article
Language:English
Subjects:
(1-Carboxyethyl)hexose
Bacterial Capsules - chemistry
Bacterial polysaccharide
Butyrivibrio fibrisolvens
Carbohydrate Conformation
Carbohydrate Sequence
Extracellular polysaccharide
Gram-Negative Anaerobic Bacteria - chemistry
Magnetic Resonance Spectroscopy
methylation
Molecular Sequence Data
Molecular Structure
polysaccharides
spectral analysis
strains
Structural elucidation
structure
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Summary:The structure of Butyrivibrio fibrisolvens strain 49 capsular polysaccharide has been investigated mainly by sugar and methylation analysis, partial chemical degradations. NMR spectroscopy, and mass spectrometry. The results suggest that the polysaccharide is composed of pentasaccharide repeating units having the following structure. ▪ The polysaccharide contains O-acetyl groups, one of which is substituted to O-3 of the 4-substituted α- d-Gal p residue, while others occur in non-stoichiometric amounts at other locations.
ISSN:0008-6215
1873-426X
DOI:10.1016/0008-6215(95)00234-5