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Structure of the capsular polysaccharide of Klebsiella serotype K50

✍ Scribed by Eleonora Altman; Guy G.S. Dutton

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
649 KB
Volume
118
Category
Article
ISSN
0008-6215

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✦ Synopsis

The structure of the capsular polysaccharide from Klebsiellu K50 has been determined by using the techniques of methylation, periodate oxidation, partial hydrolysis, and p-elimination.

N.m.r. spectroscopy (iH and 13C) was used to establish the nature of the anomeric linkages. The polysaccharide is comprised of repeating units of the heptasaccharide shown and is one of 19 capsular polysaccharides that are composed of D-glucuronic acid, D-galactose, D-glucose, and Dmannose residues, this is one. It has the only known, "five-plus-two", repeating unit; the structure of the polysaccharide from Klebsiella KS0 is, therefore, unique in this series. -t3)-~-D-Gal-(1~3)-~-D-Glc-(1~4)-(w-D-GlcA-(1~3)-cy-D-Man-(1~2)-6 a-D-Man-(l+ t 1 r~-D-Glc 6 t 1 P-D-Gal

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