32817-12-2Relevant academic research and scientific papers
Heterogeneous structure of O-antigenic part of lipopolysaccharide of Salmonella telaviv (Serogroup O:28) containing 3-acetamido-3,6-dideoxy-D- glucopyranose
Kumirska,Dziadziuszko,Czerwicka,Lubecka,Kunikowska,Siedlecka,Stepnowski
experimental part, p. 780 - 790 (2012/01/19)
The O-polysaccharide of Salmonella Telaviv was obtained by mild acid degradation of the lipopolysaccharide and studied by chemical methods (sugar and methylation analyses, Smith degradation, de-O-acetylation) and NMR spectroscopy. The structure of the O-polysaccharide was established. The repeating units that are proximal to the lipopolysaccharide core region mostly have a digalactose side chain and lack glucose, whereas those at the other end of the chain mostly do bear glucose but are devoid of the disaccharide side chain. This is the first structure established for the O-polysaccharide of a Salmonella serogroup O:28 (formerly M) strain characterized by subfactors O281 and O282. Knowledge of this structure and the structure of the O-polysaccharide of Salmonella Dakar (O281, O28 3) established earlier is crucial for determination of the exact structures associated with subfactors O281, O282, and O283 and elucidation of the genetic basis of the close relationship between Escherichia coli O71 and S. enterica O:28 O-antigens.
Structure and gene cluster of the O-antigen of Salmonella enterica O60 containing 3-formamido-3,6-dideoxy-d-galactose
Perepelov, Andrei V.,Liu, Bin,Senchenkova, Sof'ya N.,Shashkov, Alexander S.,Feng, Lu,Knirel, Yuriy A.,Wang, Lei
experimental part, p. 1632 - 1634 (2010/08/22)
An O-polysaccharide was obtained by mild acid degradation of the lipopolysaccharide of Salmonella enterica O60 strain G1462, and the following unique structure of the O-unit was determined by chemical analyses along with 2D 1H and 13C NMR spectroscopy:{A figure is presented}. where Fuc3NFo stands for 3-formamido-3,6-dideoxygalactose. The structure established is in agreement with the O-antigen gene cluster of S. enterica O60, which contains putative genes for the synthesis of GDP-d-Man and dTDP-d-Fuc3NFo, three glycosyltransferase genes, and two O-unit-processing genes (wzx and wzy).
