Low-temperature-induced changes in composition and fluidity of lipopolysaccharides in the antarctic psychrotrophic bacterium Pseudomonas syringae.
The Antarctic psychrotrophic bacterium Pseudomonas syringae was more sensitive to polymyxin B at a lower (4 degrees C) temperature of growth than at a higher (22 degrees C) temperature. The amount of hydroxy fatty acids in the lipopolysaccharides (LPS) also increased at the lower temperature. These changes correlated with the increase in fluidity of the hydrophobic phase of lipopolysaccharide aggregates in vitro.
Kumar
G Seshu
GS
Centre for Cellular and Molecular Biology, Hyderabad 500 007, India.
Jagannadham
M V
MV
Ray
M K
MK
D000864:Antarctic Regions; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002462:Cell Membrane / Q000502:physiology*; D003080:Cold Temperature; D015964:Gene Expression Regulation, Bacterial; D057927:Hydrophobic and Hydrophilic Interactions; D008070:Lipopolysaccharides / Q000378:metabolism*; D011112:Polymyxin B / Q000494:pharmacology*; D011549:Pseudomonas / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D013696:Temperature
D000900:Anti-Bacterial Agents; D008070:Lipopolysaccharides; D011112:Polymyxin B