The Occurrence of α(1→2) Linked N-Acetylperosamine-Homopolymer in Lipopolysaccharides of Non-O1 Vibrio cholerae Possessing an Antigenic Factor in Common with O1 V. cholerae

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Chemical analysis was carried out on lipopolysaccharides from Vibrio cholerae bio-serogroup Hakata 487-85. The O-specific chain of the phenol-soluble lipopolysaccharides was demonstrated by ¹³C-NMR spectroscopy and methylation analysis to contain a linear homopolymer of α(1→2) linked N-acetylperosamine (4-acetamido-4, 6-dideoxy-D-mannopyranose), which was closely similar to but not identical to a linear α(1→2) linked N-3-deoxy-L-glycerotetronyl (S-2, 4-dihydroxybutyryl) perosamine-homopolymer constituting that of O1 Vibrio cholerae lipopolysaccharides.