[Adhesive properties of Pragia fontium lipopolysaccharides].

Effect of lipopolysaccharides (LPS) and their structure components (lipid A, oligosaccharide core, and O-specific polysaccharides) from 8 strains of P. fontium on the adhesion process have been investigated for the first time. It was demonstrated, that LPS and their structural components may compete with E.

[Biological activity of native and modified lipopolysaccharides of Pragia fontium].

Modified lipopolysaccharides (LPS) of Pragia fontium were obtained with germanium complexes (IV) of 2-aminobenzoylhydrazon of salicylic aldehyde (2-NH2-H2Bs), 2-hydroxybenzoylhydrazon salicylic aldehyde (2-OH-H2Bs) and nicotinoylhydrazon of salicylic aldehyde (H2Ns). The modification of LPS was confirmed by IR spectroscopy. Comparative investigations of pyrogenic activity of native and modified LPS showed, that only P.

[Chemical characteristic of structure components of Pragia fontium lipopolysaccharides].

Structure components (lipid A. oligosaccharide core, and O-specific polysaccharide) of the lipopolysaccharide from 8 strains of Pragia fontium were obtained as a result of mild acidic hydrolysis. The macromolecular organization of lipopolysaccharides of studied strains was heterogeneous and presented both by S-forms, and R- or SR-forms.

[Chemical characteristic and serological activity of Pragia fontium lipopolysaccharides].

Lipopolisaccharides (LPS) of 8 strains of Pragia fontium--representatives of a new genus of Enterobacteriaceae family, was isolated for the first time. It was demonstrated, that lipopolysaccharides yields were 10-20% of dry cells weight. Investigations of monosaccharide composition have determined the presence of glucose, galactose, rhamnose and mannose in lipopolysaccharides, that permitted to establish 4 chemotypes ofpolysaccharide part of LPS.