Polysaccharides determination

Bacterial polysaccharides were first recognized nearly one hundred years ago, but information about their structures and properties has been obtained almost entirely during the last fifteen or twenty years. Combined with protein, these polysaccharides are responsible for the immunizing powers of many bacteria, and the structure of the polysaccharide determines the exact or specific immunological response to these organisms. 

It will be shown that the position of linkage between the glucose units in polysaccharides determines their rotatory behavior in cupram-monium in the same manner that position of substitution does in the monosaccharides. 

Sugars, in Polysaccharides, Determination, New Color Reactions for (Dische). 2... 

S. Cros, C. Gamier, M.A.V. Axelos, A. Imberty, S. Perez, Solution Conformations of Pectin Polysaccharides Determination of Chain Characteristics by Amall Angle Neutron Scattering, Viscosimetry, and Molecular Modeling. Biopolymers 39 (1996) 229. 

The variety in structure and consequently different properties of microbial polysaccharides determine the interest in their pioneering application as best substituted of the existing and also the newer entrances. Microbial polysaccharides surest a number of advantages in comparison with their plant and algae counterparts ... 

The importance of the 08 antigen of E. coli((xl 3 linked trisaccharides of al- 2 linked D-mannose) was investigated in relation to serum complement resistance, by introducing the 08-polysaccharide determinants of a smooth form Hfr donor strain into its rough mutant recipient. The presence of the 08 antigen caused a delay in the bactericidal reaction, but did not fully protect the cell. It is clear that while the O-specific polysaccharides of E. coli and other Gram-negative bacteria can be important virulence factors, other determinants are necessary for the expression of full virulence. 

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