Structural determination of the O-antigenic polysaccharide from Salmonella Mara (O:39) |
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Authors: | Jerzy Gajdus Joanna ?mietana Piotr Stepnowski |
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Affiliation: | Faculty of Chemistry, University of Gdańsk, Sobieskiego 18, 80-952 Gdańsk, Poland |
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Abstract: | The O-antigenic polysaccharide of Salmonella Mara O:39 (formerly Q) was investigated by sugar and methylation analyses, absolute configuration assignment, mass spectrometry and NMR spectroscopy. The experiments revealed an O-polysaccharide chain composed of the following linear tetrasaccharide repeating units with the structure:→2)-α-l-Quip3NAc-(1→3)-α-d-Manp-(1→3)-α-l-Fucp-(1→3)-α-d-GalpNAc-(1→where α-l-Quip3NAc is the residue of 3-acetamido-3,6-dideoxy-α-l-glucopyranose. This repeating unit is the first published structure of the O-polysaccharide from 27 serotypes of Salmonella bacteria belonging to serogroup O:39 in the Kauffmann-White classification system. |
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Keywords: | O-antigen Salmonella Mara Serogroup O:39 3-Acetamido-3,6-dideoxy- smallcaps" >l-glucose NMR |
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