In the microscopic world of bacteria, survival depends on innovative defense systems that can neutralize viral invaders. While CRISPR-Cas9 has become widely known as both a bacterial immune mechanism and a revolutionary gene-editing tool, researchers continue to uncover additional layers of bacterial defense. One of the latest discoveries adds a surprising twist to how these tiny organisms protect themselves from viral attack.
Scientists at Rockefeller University and Memorial Sloan Kettering Cancer Center have identified a powerful new immune protein named Cat1. This protein belongs to a group known as CARF effectors, which are activated when viruses, particularly bacteriophages, attempt to infect a bacterial cell. CARF effectors help prevent viral spread by forcing the infected cell into a shutdown mode, effectively containing the threat before it reaches neighboring cells.
Continue reading… “Cat1: A Newly Discovered Bacterial Protein Freezes Viruses by Shutting Down Cell Metabolism”
