The repressor PrtR1 and the global H-NS-like regulators MvaT and MvaV enable the fine-tuning of R-tailocin expression in Pseudomonas protegens. - Heiman, Clara Margot; Antar, Hammam; Fournes, Florian; Keel, Christoph; Vacheron, Jordan (BMC Microbiology, 2025)