Within bacterial cells, specialized immune systems known as retrons fend off viral attacks. They can also perform precise DNA editing.
In a new study published in Nature Biotechnology, Shipman and his team greatly expand the universe of retron knowledge. They carried out a “census” of 163 never-before-tested retrons and identified many that can edit DNA more quickly and efficiently than those currently used in research. This research may contribute to genome engineering and future gene therapies.