Structural insights into the antibacterial function of the Pseudomonas putida effector Tke5.

Summary: Imagine good bacteria acting like tiny bodyguards for plants. They use a special microscopic "syringe" to shoot toxins into bad bacteria that try to attack the plant's roots. Scientists just figured out exactly how one of these toxins, called Tke5, works. It acts like a tiny needle that pokes holes in the bad bacteria, causing them to leak and die. By taking a super close-up picture using powerful microscopes, researchers learned how this toxin loads into the syringe before it attacks. This discovery could help us use good bacteria to protect crops and grow healthier food in the future!