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1. (Article ID: 1473)
 
Molinaro A, Lindner B, De Castro C, Nolting B, Silipo A, Lanzetta R, Parrilli M, Holst O
The structure of lipid A of the lipopolysaccharide from Burkholderia caryophilli with a 4-amino-4-deoxy-L-arabinopyranose 1-phosphate residue exclusively in glycosidic linkage
Chemistry: a European Journal 9(7) (2003) 1542-1548
 

From the lipopolysaccharides (LPSs) of the plant-pathogenic bacterium Burkholderia caryophylli, the complete structure of lipid A has been characterized. For the first time, a 4-amino-4-deoxy-L-arabinopyranose 1-phosphate residue was proven to be exclusively linked to the reducing end of lipid A from a wild-type LPS. The LPSs of B. caryophylli were degraded by mild acetate buffer hydrolysis at pH 4.4. The obtained lipid A was analyzed as such, and also after de-O-acylation or dephosphorylation. The structure of lipid A was identified mainly by means of matrix-assisted laser desorption/ionisation mass spectrometry, and by various 1D and 2D (1)H and (13)C NMR spectroscopic measurements.

lipopolysaccharides, lipid A, NMR spectroscopy, mass spectrometry, Burkholderia caryophilli

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