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Structural investigation of the capsular polysaccharide from Klebsiella K19 by chemical and n.m.r. analyses

✍ Scribed by Michel Buerret; Michel Vignon; Jean-Paul Joseleau

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 809 KB
Volume: 157
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(86)85057-1

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✦ Synopsis

Sugar analysis of the capsular antigen K19 from KlebsieZfa and of the carboxylreduced derivative confirmed its classification into the chemotype containing rhamnose, galactose, glucose, and glucuronic acid residues. Partial acid hydrolysis and phage depolymerization of K19 provided respectively a modified, linear form of the polysaccharide and oligosaccharides of the repeating unit, these were used for the structural elucidation of the original polymer. Methylation analysis, Smith degradation, and rH-and 1%n.m.r. spectroscopy of the polysaccharide and derivatives permitted formulation of the following structure for K19: *Presented at the Third European Symposium on Carbohydrates,

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