The O-specific polysaccharide was obtained by mild degradation of the Salmonella arizonae O61 lipopolysaccharide with acid. It contained 2-acetamido-2-deoxy-D-glucose, 2-acetamidino-2,6-dideoxy-L-galactose (FucAm), and 7-acetamido-3,5,7,9-tetradeoxy-5-[(R)-3-hydroxybutyramido]-D- glycero-L-galacto-nonulosonic acid (Sug). On the basis of partial acid hydrolysis with 0.1 M HCl, solvolysis with anhydrous HF in methanol, and 1H- and 13C-NMR analysis (including 1H/13C inversely correlated spectroscopy for localisation of N-acyl substituents), it was concluded that the O-specific polysaccharide had the following structure. →3)-α-L-FucAm-(1→3)-α-D-GlcNAc-(1→8)-β-Sug-(2→. The O-antigen of S. arizonae O61 is structurally related to that of Pseudomonas aeruginosa O12, thus explaining the known serological cross-reactivity between these micro-organisms.
NCBI PubMed ID: 1394306Publication DOI: 10.1016/0008-6215(92)84002-AJournal NLM ID: 0043535Publisher: Elsevier
Institutions: N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia, Max Planck Institute for Medical Research, Heidelberg Germany, I.I. Mechnikov Institute of Vaccines and Sera, Moscow Russia
Methods: 13C NMR, 1H NMR, NMR-2D, partial acid hydrolysis, HF solvolysis, sugar analysis, acid hydrolysis, GPC