Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567 Japan
Abstract:
The structures of extracellular, acidic polysaccharides from three non-nodulating rhizobia, Rhizobium trifolii AHU 1134, Rhizobium phaseoli AHU 1133, and Rhizobium lupini KLU were studied by a method involving successive fragmentation with specific two β-d-glycanases of Flavobacterium M64. These three polysaccharides are composed of repeating units of the octassacharide shown. Half of the terminal d-galactose residues are substituted by pyruvic acid acetal groups.
