title: Soft-particle model analysis of effect of LPS on electrophoretic softness of Acidithiobacillus ferrooxidans grown in presence of different metal ions.
abstract: The effect of surface lipopolysaccharides (LPS) on the electrophoretic softness and fixed charge density in the ion-penetrable layer of Acidithiobacillus ferrooxidans cells grown in presence of copper or arsenic ions have been discussed. The electrophoretic mobility data were analyzed using the soft-particle electrophoresis theory. Cell surface potentials of all the strains based on soft-particle theory were lower than those estimated using the conventional Smoluchowski theory. Exposure to metal ions increased the surface electrophoretic softness with decrease in the fixed charge density. Effect of cell surface lipopolysaccharides on the model parameters are investigated and discussed.
authors.affiliation: Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
authors.forename: M N
authors.initials: MN
authors.lastname: Chandraprabha
authors.forename: J M
authors.initials: JM
authors.lastname: Modak
authors.forename: K A
authors.initials: KA
authors.lastname: Natarajan
mesh_terms: D042763:Acidithiobacillus / Q000166:cytology / Q000187:drug effects* / Q000254:growth & development*; D000222:Adaptation, Physiological / Q000187:drug effects; D001151:Arsenic / Q000494:pharmacology; D003300:Copper / Q000494:pharmacology; D004586:Electrophoresis; D008070:Lipopolysaccharides / Q000494:pharmacology*; D008670:Metals / Q000494:pharmacology*; D008954:Models, Biological; D011134:Polysaccharides / Q000378:metabolism; D013499:Surface Properties / Q000187:drug effects
chemical_list: D008070:Lipopolysaccharides; D008670:Metals; D011134:Polysaccharides; D003300:Copper; D001151:Arsenic