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Structure of the lipopolysaccharide antigenic O-chain produced by Actinobacillus pleuropneumoniae serotype 4 (ATCC 33 378)

✍ Scribed by Eleonora Altman; Malcolm B. Perry; Jean-Robert Brisson

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 656 KB
Volume: 191
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(89)85072-4

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✦ Synopsis

The structure of the antigenic 0-polysaccharide part of the S-type lipopolysaccharide produced by Actinobacillus pleuropneumoniae serotype 4 has been determined by periodate oxidation, methylation, partial hydrolysis, and 'Hand 13C-n.m.r. spectroscopy. The 0-polysaccharide structure has a branched-tetrasaccharide repeating unit, {+3)-/3-D-Galp-(l+4)-[~-D-Glcp-(l~3)]-~-D-GalpNAc-(1+4)-a-L-Rhap-(1-},,.

The structure resembles that of the lipopolysaccharide O-chain of A. pleuropneumoniae serotype 7, and their common epitopes may account for the apparent serological cross-reactivity observed between the two serotypes when incompletely adsorbed, anticapsular-typing sera are used.

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