Document Detail

Structural studies of S-7, another exocellular polysaccharide containing 2-deoxy-arabino-hexuronic acid.
MedLine Citation:
PMID:  11383898     Owner:  NLM     Status:  MEDLINE    
The exocellular polysaccharide S-7, a heteropolysaccharide from Azotobacter indicus var. myxogenes has been studied using methylation analysis, Smith degradation, partial acid hydrolysis, NMR spectroscopy and mass spectrometry as the principal methods. It is concluded that the repeating unit has the following structure: [structure: see text] The absolute configuration of the deoxyhexuronic acid was deduced from 1H NMR chemical shifts and is most likely D. Approximately two O-acetyl groups per repeating unit are present, one of which is presumably on the Rha residue. The structure bears great resemblance to another polysaccharide, recently studied, produced by Sphingomonas paucimobilis I-886.
S Gulin; A Kussak; P E Jansson; G Widmalm
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Carbohydrate research     Volume:  331     ISSN:  0008-6215     ISO Abbreviation:  Carbohydr. Res.     Publication Date:  2001 Apr 
Date Detail:
Created Date:  2001-05-31     Completed Date:  2002-01-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0043535     Medline TA:  Carbohydr Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  285-90     Citation Subset:  IM    
University College of South Stockholm, Huddinge, Sweden.
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MeSH Terms
Azotobacter / chemistry
Carbohydrate Conformation
Carbohydrate Sequence
Hexuronic Acids / analysis*
Magnetic Resonance Spectroscopy
Mass Spectrometry
Molecular Sequence Data
Molecular Structure
Monosaccharides / analysis*
Polysaccharides, Bacterial / chemistry*
Reg. No./Substance:
0/2-deoxy-arabino-hexuronic acid; 0/Hexuronic Acids; 0/Monosaccharides; 0/Polysaccharides, Bacterial

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