[An anionic polysaccharide from the cell wall of Actinoplanes brasiliensis INA 3802].

The cell wall of Actinoplanes brasiliensis INA 3802 contains a polysaccharide which has an unusual structure. The peculiar structure of the polymer has been established by a nondestructive procedure which included 1H- and 13C-NMR spectroscopy. The polysaccharide consists of six tetrasaccharide links having the following composition -->6(alpha-D-Glc rho-(1-->4)-beta-D-Clc rho 2,3NAcA-(1-->4)-alpha-D-Clc rho 2,3NAc-(1-->4)-beta- D-Man rho 2,3NAcA-(1-->.