[Detection of two new extracellular adaptogenic factors in Escherichia coli K-12].
The culture liquid of Escherichia coli K-12 was able to promote the adaptation of this bacterium to various stress factors. Exponentially growing E. coli cells were found to secrete an extracellular "factor of accelerated adaptation to new media," capable of shortening by several hours the lag phase of LB-grown cells transferred to minimal medium with glucose. At sublethal temperatures, E. coli cells secreted a "growth rate reducer," capable of slowing down the growth rate and enhancing the resistance of cells to bactericidal concentrations of N-ethylmaleimide. Such factors have not yet been described in the literature.
Nikolaev
Iu A
IuA
Institute of Microbiology, Russian Academy of Sciences, Moscow, Russia.
D000220:Adaptation, Biological; D001685:Biological Factors / Q000302:isolation & purification* / Q000502:physiology; D003470:Culture Media; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism; D005033:Ethylmaleimide / Q000494:pharmacology; D005947:Glucose; D006358:Hot Temperature
D001685:Biological Factors; D003470:Culture Media; D005947:Glucose; D005033:Ethylmaleimide
Obnaruzhenie dvukh novykh vnekleochnykh adaptogennykh faktorov u Escherichia coli K-12.