A donut-shaped protein breaks apart to start bacterial cell division

Scientists at Universitat Autònoma de Barcelona discovered how bacterial cell division begins by observing the MraZ protein's unique binding mechanism. Using advanced imaging techniques, researchers found that the donut-shaped MraZ protein must break apart and reshape itself to attach to specific DNA sequences that trigger cell division. This structural transformation allows four protein subunits to bind to four DNA boxes in the dcw gene cluster, activating the genes needed for bacteria to reproduce and build cell walls.