Cs + Induces the kdp Operon of Escherichia coli by Lowering the Intracellular K + Concentration
Open Access
- 15 June 2001
- journal article
- Published by American Society for Microbiology in Journal of Bacteriology
- Vol. 183 (12) , 3800-3803
- https://doi.org/10.1128/jb.183.12.3800-3803.2001
Abstract
Cs + was found to induce expression of the kdpFABC operon, encoding a high-affinity K + uptake system of Escherichia coli. Quantitative expression analyses at the transcriptional and translational levels reveal that CsCl causes much higher induction of kdpFABC than does NaCl. A decrease of the intracellular K + concentration is found in cells exposed to CsCl. The results indicate that kdpFABC expression is induced when the intracellular K + concentration is lowered. Moreover, the results imply that the signal transduction cascade mediated by KdpD and KdpE is able to integrate multiple signals.Keywords
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