In anaerobic suspensions of Escherichia coli, after H+ ions have been translocated outwards across the plasma membrane by a respiratory pulse, re-equilibration is catalysed by Na+. The sudden addition of a Na+ salt causes the effective outward translocation of H+ by an electroneutral process. We conclude that the plasma membrane of E. coli contains a Na+/H+ antiport system that normally translocates Na+ outwards under the influence of an inwardly directed H+-activity gradient.
Research Article| October 01 1974
Proton/sodium ion antiport in Escherichia coli
Ian C. West;
Biochem J (1974) 144 (1): 87-90.
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Ian C. West, Peter Mitchell; Proton/sodium ion antiport in Escherichia coli. Biochem J 1 October 1974; 144 (1): 87–90. doi: https://doi.org/10.1042/bj1440087
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