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A Zur-mediated transcriptional regulation of the zinc export system in Pseudomonas aeruginosa
2 monthes ago | By Springer
Abstract
The control of cellular zinc concentrations by dedicated import and export systems is essential for the survival and virulence of Pseudomonas aeruginosa. The transcription of its many Zn transporters is therefore tightly regulated by a known set of transcription factors involved in either the import or the export of Zn. In this work, we show that the Zur protein, a well-known repressor of Zn import, plays a dual role and functions in both import and export processes. In a situation of Zn excess, Zur represses Zn entry, but also activates the transcription of czcR , a positive...
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