Abstract:Copper is essential to most living beings but also toxic. Bacteria have thus developed homeostatic mechanisms to tightly control its intracellular concentration. The 3-gene operon bp2923-bfrG-bp2921 is down-regulated by copper and notably encodes a TonB-dependent transporter in Bordetella pertussis. We show that the protein encoded by bp2923, which is a member of the DUF2946 family, represents a new type of upstream Open Reading Frame (uORF) involved in post-transcriptional regulation of the downstream genes. … Show more
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