Document Detail

beta-Elimination of glucosyluronic residues during methylation of an acidic polysaccharide from Erwinia chrysanthemi CU 643.
MedLine Citation:
PMID:  11376611     Owner:  NLM     Status:  MEDLINE    
The Erwinia chrysanthemi CU643 EPS has a linear hexasaccharide repeating unit in which a 4-linked uronic acid residue is present. The EPS was methylated by either the NaOH-Me2SO-MeI or Li-dimsyl procedure. MALDI-TOF MS analysis of the methylated products indicates that the beta-eliminative degradation occurs during the methylation, as characterized by serial fragments of the hexasaccharide repeating units. The degradation was clearly defined from the methylation of a glucosyluronic-containing pyruvated pentasaccharide.
B Yun Yang; R Montgomery
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Carbohydrate research     Volume:  332     ISSN:  0008-6215     ISO Abbreviation:  Carbohydr. Res.     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-05-29     Completed Date:  2001-12-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0043535     Medline TA:  Carbohydr Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  317-23     Citation Subset:  IM    
Department of Biochemistry, College of Medicine, University of Iowa, Iowa City, Iowa, IA 52242, USA.
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MeSH Terms
Gas Chromatography-Mass Spectrometry
Glucuronic Acids / metabolism*
Oligosaccharides / metabolism
Pectobacterium chrysanthemi / chemistry*
Polysaccharides / metabolism*
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
Reg. No./Substance:
0/Glucuronic Acids; 0/Oligosaccharides; 0/Polysaccharides

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