Characterization of the O-antigen polysaccharide derived from Pantoea agglomerans IG1 lipopolysaccharide

Carbohydr Res. 2017 Sep 8;449:32-36. doi: 10.1016/j.carres.2017.06.017. Epub 2017 Jun 28.


A polysaccharide fraction was isolated from the Pantoea agglomerans IG1 lipopolysaccharide (IP-PA1), and its O-antigenic polysaccharide was characterized by chemical analyses and 1D and 2D 1H and 13C NMR spectroscopy. The polysaccharide is composed of linear tetrasaccharide repeating units, consisting of glucose and rhamnose, where 40% of one of the rhamnose residues is substituted with glucose: →2)-α-l-Rhap-(1→6)-α-d-Glcp-(1→2)-[β-d-Glcp-(1→3)]0.4-α-l-Rhap-(1→2)-α-l-Rhap-(1→.

Keywords: Lipopolysaccharide; NMR spectroscopy; O-antigen polysaccharide; Pantoea agglomerans; Wheat symbiotic bacteria.

MeSH terms

  • Carbohydrate Sequence
  • O Antigens / chemistry*
  • Pantoea / chemistry*


  • O Antigens