The O7 antigen of Stenotrophomonas maltophilia is a linear D-rhamnan with a trisaccharide repeating unit that is also present in polymers for some Pseudomonas and Burkholderia species.
The O antigen polymer recovered from the reference strain for Stenotrophomonas (Xanthomonas or Pseudomonas) maltophilia serogroup O7, after mild acid hydrolysis of the lipopolysaccharide, was constructed from D-rhamnose. By means of chemical degradations and NMR studies, the repeating unit of the polymer was shown to be a linear trisaccharide with the structure -->2)-alpha-D-Rhap-(1-->3)-alpha-D-Rhap-(1-->3)-alpha-D-R hap-(1-->. The same repeating unit is present in the common antigen of Pseudomonas aeruginosa and in O antigens from some pathovars of Pseudomonas syringae and a strain of Burkholderia (Pseudomonas) cepacia.
Winn
A M
AM
Department of Chemistry, University of Hull, UK.
Wilkinson
S G
SG
D019117:Burkholderia / Q000737:chemistry / Q000276:immunology*; D002240:Carbohydrate Sequence; D003837:Deoxy Sugars / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008351:Mannans / Q000737:chemistry / Q000302:isolation & purification; D008969:Molecular Sequence Data; D019081:O Antigens / Q000737:chemistry* / Q000302:isolation & purification; D011549:Pseudomonas / Q000737:chemistry / Q000145:classification / Q000276:immunology*; D012091:Repetitive Sequences, Nucleic Acid; D013045:Species Specificity; D014312:Trisaccharides / Q000737:chemistry; D014974:Xanthomonas / Q000737:chemistry / Q000145:classification / Q000276:immunology*
D003837:Deoxy Sugars; D008351:Mannans; D019081:O Antigens; D014312:Trisaccharides; C065836:rhamnan