Extended Data Fig. 9: Structural Comparison of PtuB and Cas9.
From: PtuA and PtuB assemble into an inflammasome-like oligomer for anti-phage defense

a, Overlaid structures of PtuB (pink) and the HNH domain of Cas9 (green) revealing their similarity. b, Overlaid catalytic cores of PtuB (pink) and the NHN domain of Cas9 (green) with catalytic residues highlighted in sticks.