抄録
The polysaccharide produced by a marine Pseudomonas sp. No. 42 strain was found to be a highmolecular-weight glycosaminoglycan composed of N-acetyl-D-glucosamine (D-GlcNAc), D-glucuronic acid (D-GlcUA), and L-glutamic acid (L-Glu) in a molar ratio of 2:1:1. Structural analysis, employing a combination of chemical and NMR techniques, established that the polysaccharide was composed of linear repeating units having the following structure:
The native polysaccharide contained α-D-GlcNAc residues possessing free hydroxyl groups at 3 and 4 positions, an acetyl group at 3 positions, and 4 positions, respectively, in a ratio of 1:2:1.
