Anionic polymers of the cell wall of Bacillus subtilis subsp. subtilis VKM B-501T
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Teichoic acid and disaccharide-1-phosphate polymer were identified in the cell walls of Bacillus subtilis subsp. subtilis VKM B-501T. The teichoic acid represents 1,3-poly(glycerol phosphate) 80% substituted by α-D-glucopyranose residues at O-2 of glycerol. The linear repeating unit of disaccharide-1-phosphate polymer contains the residues of β-D-glucopyranose, N-acetyl-α-D-galactosamine, and phosphate and has the following structure: -6)-β-D-Glcp-(1→3)-α-D-GalpNAc-(1-P-. The structures of two anionic polymers were determined by chemical and NMR-spectroscopic methods. The 1H- and 13C-NMR spectral data on disaccharide-1-phosphate polymer are presented for the first time.
Key wordsBacillus subtilis cell wall teichoic acid disaccharide-1-phosphate polymer anionic polysaccharides NMR spectroscopy
sodium salt of 3-(trimethylsilyl)-3,3,2,2-tetradeuteropropionic acid
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