Citrobacter lipopolysaccharides: structure elucidation of the O-specific polysaccharide from strain PCM 1487 by mass spectrometry, one-dimensional and two-dimensional 1H-NMR spectroscopy and methylation analysis

Abstract
Structural studies on the O-specific polysaccharide of Citrobacter PCM 1487 lipopolysaccharide, using methylation analysis. Smooth degradation and 1H-NMR spectroscopy, indicate that it consists of the trisaccharide repeating units .**GRAPHIC**. In this structure, 4-deoxy-D-araHex stands for 4-deoxy-D-arabino-hexose.