Scientists discovered that unrelated viruses produce proteins that bind and lock the bacterial membrane flippase MurJ, halting peptidoglycan assembly and triggering bacterial death. High‑resolution structural imaging revealed how these viral factors freeze MurJ in a single conformation, defining a conserved vulnerability across bacteria. Researchers suggest MurJ and its viral inhibitors could be templates for a new class of antimicrobials targeting drug‑resistant pathogens; medicinal chemistry and in vivo efficacy testing remain to be done.