1.
Carbohydr Res
; 369: 25-30, 2013 Mar 22.
Article
in English
| MEDLINE
| ID: mdl-23376680
ABSTRACT
The lipopolysaccharide of a Gram-negative bacterium having a putative plant-growth promoting activity (Pantoea ananatis AEP17) has been isolated and subjected to partial hydrolysis. The O-antigen has been studied by mass spectrometry and NMR experiments. On the basis of these experiments it is concluded that the following repeating unit is present in the polysaccharide: â3)-ß-d-GlcpNAc-(1â3)[α-d-GalpAN-(1â2)]-α-l-Rhap-(1â2)-α-l-Rhap-(1â3)-α-l-Rhap-(1â2)-α-l-Rhap-(1â The occurrence of d-galacturonamide (GalAN) is unusual in bacterial O-polysaccharides. It has only been reported in Escherichia coli O65 [Perry, M. B.; MacLean, L. L. Carbohydr. Res.1999, 322, 57-66].