FIG 6.
Mpro mutation breakdown at nirmatrelvir contact and catalytic residues. (A) Mutations identified at residues directly interacting with nirmatrelvir and/or substrate peptide. (B) Three-dimensional structural model of Mpro (PDB ID 7RFS), with residues from panel A highlighted in “stick” representation and shown in individual colors. The protein backbone is shown in ribbon representation. AA, amino acid. Stop codons are donoted as (*).