Function and mechanism of action of the small regulatory RNA ArcZ in Enterobacterales

ArcZ targets in Erwinia amylovora. Green arrows indicate activation, red arrows indicate repression, and black arrows indicate either translation or activity. ArcZ plays a role in regulating the response to oxidative stress by modulating the levels of the antioxidant enzymes KatA and Tpx. The abbreviation NC stands for “Noncharacterized” protein. ArcZ modulates motility and biofilm formation through the control of flhDC and lrp translation. Figure was created with BioRender.com.