Fig. 1.

The structure of SARS-CoV-2 3CLpro in homodimeric form (left) and two perspectives of the monomer (right). The N-finger (residues 1–7) is depicted in dark blue, domain I (residues 8–101) in cornflower blue, domain II (residues 102–184) in orange, the loop region (residues 185–200) in green, domain III (residues 201–306) in red