title: Low-temperature-induced changes in composition and fluidity of lipopolysaccharides in the antarctic psychrotrophic bacterium Pseudomonas syringae.
abstract: 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.
authors.affiliation: Centre for Cellular and Molecular Biology, Hyderabad 500 007, India.
authors.forename: G Seshu
authors.initials: GS
authors.lastname: Kumar
authors.forename: M V
authors.initials: MV
authors.lastname: Jagannadham
authors.forename: M K
authors.initials: MK
authors.lastname: Ray
mesh_terms: 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
chemical_list: D000900:Anti-Bacterial Agents; D008070:Lipopolysaccharides; D011112:Polymyxin B