CRISPR-Cas9 is a major gene-editing tool that has attracted tremendous interdisciplinary efforts to ameliorate precise genome manipulation. Now, the pivotal structural features behind concerted double-stranded DNA cleavages by the Cas9 endonuclease have been captured through cryo-electron microscopy, laying the groundwork for improved Cas9 engineering.
- Aakash Saha
- Chinmai Pindi
- Giulia Palermo