Structure of the polysaccharides from the lipopolysaccharide of Azospirillum brasilense Jm125A2

Carbohydrate Research
Elena N SigidaYuriy A Knirel

Abstract

Two polysaccharides were obtained by mild acid degradation of the lipopolysaccharide of associative nitrogen-fixing bacteria Azospirillum brasilense Jm125A2 isolated from the rhizosphere of a pearl millet. The following structures of the polysaccharides were established by sugar and methylation analyses, Smith degradation, and (1)H and (13)C NMR spectroscopy: [Formula: see text] Structure 1 has been reported earlier for a polysaccharide from A. brasilense S17 (Fedonenko YP, Konnova ON, Zdorovenko EL, Konnova SA, Zatonsky GV, Shaskov AS, Ignatov VV, Knirel YA. Carbohydr Res 2008;343:810-6), whereas to our knowledge structure 2 has not been hitherto found in bacterial polysaccharides.

References

Jun 29, 2004·Carbohydrate Research·Yuliya P FedonenkoYuriy A Knirel
Oct 18, 2011·Biochemistry. Biokhimii︠a︡·Yu P FedonenkoYu A Knirel
Apr 7, 2015·Mikrobiologiia·E N SigidaV V Ignatov

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