Specific cesium transport via the Escherichia coli Kup (TrkD) K+ uptake system.
Escherichia coli cells which contain a functional Kup (formerly TrkD) system took up Cs+ with a moderate rate and affinity. Kup is a separate K+ uptake system with relatively little discrimination in the transport of the cations K+, Rb+, and Cs+. Regardless of the presence or absence of Kup, K+-replete cells took up Cs+ primarily by a very low affinity mode, proportional to the ratio of the Cs+ and K+ concentrations in the medium.
Bossemeyer
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Abteilung Mikrobiologie, Universität Osnabrück, Federal Republic of Germany.
Schlösser
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A
Bakker
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EP
D001667:Binding, Competitive; D001692:Biological Transport; D002586:Cesium / Q000378:metabolism*; D004252:DNA Mutational Analysis; D004926:Escherichia coli / Q000378:metabolism*; D005798:Genes, Bacterial; D007700:Kinetics; D011188:Potassium / Q000378:metabolism*; D011994:Recombinant Proteins / Q000378:metabolism; D013379:Substrate Specificity
D011994:Recombinant Proteins; D002586:Cesium; D011188:Potassium