[Distribution of polyamines in Escherichia coli and their role in potassium exchange between the cell and the environment during aerobiosis-anaerobiosis transitions].
The transition of E. coli cells to anaerobiosis is accompanied by the onset of two cellular cation flows in different directions: potassium is released into the environment, and putrescine enters the cells. If aerobic conditions are reestablished, the cation flows change directions. Under anaerobiosis, the cell components bind putrescine. Investigation of the chemical interactions resulting in putrescine binding and metabolic conversion under anaerobic conditions revealed DNA to be the main target in this process. The driving forces and mechanisms of cation transfer are discussed, and the involvement of putrescine in topological changes in the DNA and the development of adaptive cell responses to anaerobiosis is considered.
Tkachenko
A G
AG
Chudinov
A A
AA
Salakhetdinova
O Ia
OIa
D000222:Adaptation, Physiological; D000332:Aerobiosis / Q000502:physiology; D000693:Anaerobiosis / Q000502:physiology; D015317:Biogenic Polyamines / Q000378:metabolism / Q000502:physiology*; D003470:Culture Media; D004247:DNA / Q000378:metabolism; D004734:Energy Metabolism / Q000502:physiology; D004926:Escherichia coli / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism*; D011700:Putrescine / Q000378:metabolism*
D015317:Biogenic Polyamines; D003470:Culture Media; D004247:DNA; D011188:Potassium; D011700:Putrescine
Raspredelenie poliaminov u Escherichia coli i ikh rol' v obmene kaliia mezhdu kletkoĭ i sredoĭ v protsesse aérobno-anaérobnykh perekhodov.