Extended Data Fig. 2: Structural homology search reveals that SopF is a member of the ART family.

a, Dali search results of SopF structure. b, Cartoon schemes of structurally characterized ART prototypes, including SopF (this study) and the ART domains of RNA 2'-phosphotransferase (PDB code: 1WFX), diphtheria toxin (PDB code: 1TOX), and cholera toxin (PDB code: 2A5F). The conserved six-stranded β-sheets are colored in magenta and the catalytic triads are shown as yellow sticks.