Abstract
Mobile genetic elements are small DNA fragments that can relocate within the genome, causing either gene inactivation or enhanced gene expression. Our research identified a new functional promoter and mRNA translation region within the IS10R element, which is part of the widely distributed Tn10 transposon. We found that the global regulators ArgR and IHF control the activity of this promoter. Additionally, insertion of this mini-Tn10 derivative into the barA gene resulted in the expression of a truncated but constitutive active form of the BarA sensor kinase. Overall, our work sheds light on how mobile genetic elements could impact the physiology and virulence of opportunistic pathogenic bacteria.
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