2D NOESY EXPERIMENTS ON ACETYLATED POLYSACCHARIDE EXCRETED BY RHIZOBIUM-MELILOTI M5N1 CS STRAIN

Links between residues of glucuronan excreted by Rhizobium meliloti M5 N1 CS strain are studied by 2D NOESY experiments. We observe groups of 3-O-acetylated residues and three species of unacetylated residues ar e evidenced: species (1') before 3-O-acetylated, species (1) after 2-O -acetylated residues and sets of unacetylated residues (2).