title: [The effect of the physiological state of Escherichia coli on the nucleoid ultrastructure under stress exposures].
abstract: The energetic state and activity of polyamine-synthesizing system of E. coli were studied under conditions of aerobic-anaerobic and pH transitions, nutrition shifts, osmotic and heat shocks. The electron microscopy of cells showed a correlation between cell physiological state and nucleoid ultrastructure. The role of energetic status and polyamines in the regulation of DNA supercoiling is discussed which is a putative cause for the changes observed in the nucleoid ultrastructure.
authors.forename: A G
authors.initials: AG
authors.lastname: Tkachenko
authors.forename: A A
authors.initials: AA
authors.lastname: Chudinov
authors.forename: N S
authors.initials: NS
authors.lastname: Churilova
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D002467:Cell Nucleus / Q000502:physiology* / Q000648:ultrastructure; D004269:DNA, Bacterial / Q000502:physiology / Q000648:ultrastructure; D004278:DNA, Superhelical / Q000502:physiology / Q000648:ultrastructure; D004734:Energy Metabolism / Q000502:physiology; D004926:Escherichia coli / Q000502:physiology* / Q000648:ultrastructure; D006863:Hydrogen-Ion Concentration; D008854:Microscopy, Electron; D013696:Temperature
chemical_list: D004269:DNA, Bacterial; D004278:DNA, Superhelical
vernacular_title: Vliianie fiziologicheskogo sostoianiia Escherichia coli na ul'trastrukturu nukleoida v usloviiakh stressovykh vozdeĭstviĭ.