[Changes in membrane potential and transport of ions through the S. typhimurium LT2 membrane induced by bacteriophages].

Bacteriophages P22 and dp8 cause the membrane potential depolarization for 10-30 mV, reversal rapid H+ influx into bacteria and K+ exit from S. typhimurium LT2, these effects depend on infection plural and are observed only in the presence of Ca+2 in the medium. delta psi depolarization and K+ efflux induced by phage dp8 are increased with the growth of Mg+2 concentration from 0 to 2 mM.

[Characteristics of K+ uptake in S. enteritidis bacteria].

Bacterial Salmonella enteritidis var. Issatchenko in media without exogenic energy source uptakes K+ in one step with Km 2.1 mM and Vmax 0.

[The nature of H+-K+-exchange in anaerobically and aerobically grown S. typhimurium].

H+-K+-exchange via the Trk-like system of K+ accumulation takes place in anaerobically grown S. typhimurium LT-2 with stable ratio of DCC-sensitive ionic fluxes, equal to 2H+ of a cell for one K+ of the medium. This exchange is now observed in the mutant S.

[The character of K+ uptake in anaerobically grown S. typhimurium].

Tre character of K+ uptake in anaerobically grown S. typhimurium LT-2 is studied. In the alkaline media with glucose and moderate K+ activity these bacteria uptake K+ in two steps, the first of which has a high rate of K+ uptake, Km 2.

[The capacity of anaerobically grown bacteria to exchange the 2H+ of the cell for the K+ of the medium and to maintain a high K+ distribution between cell and medium].

The N,N'-dicyclohexylcarbodiimide sensitive exchange of 2H+ of a cell for K+ of medium stable to pH, K+ activity and temperature changes has been discovered in anaerobically grown gram-negative Escherichia coli, Salmonella typhimurium. S. enteritidis, Proteus mirabilis, P.