Lm. Preston et al., PRELIMINARY STRUCTURE DETERMINATION OF THE CAPSULAR POLYSACCHARIDE OFVIBRIO-CHOLERAE O139 BENGAL AL1837, Journal of bacteriology, 177(3), 1995, pp. 835-838
Vibrio cholerae O139 Bengal has recently been identified as a cause of
epidemic cholera in Asia. In contrast to V. cholerae O1, V. cholerae
O139 Bengal has a polysaccharide capsule. As determined by high-perfor
mance anion-exchange chromatography and H-1 nuclear magnetic resonance
analysis, the capsular polysaccharide of V. cholerae O139 Bengal stra
in A11837 has six residues in the repeating subunit; this includes one
residue each of N-acetylglucosamine, N-acetylquinovosamine (QuiNAc),
galacturonic acid (GalA), and galactose and two residues of 3,6 -dideo
xyxylohexose (Xylhex). The proposed structure is [GRAPHICS] the pro-S
hydrogen.