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Tertiary structures of HCV NS3/NS4B protease and chemical formulas of HCV protease inhibitors. (A) HCV NS3/NS4B protease in complex with simeprevir (PDB accession numbers 3KEE and 4B76). HCV NS3 and NS4B proteins are shown in pink and orange, respectively. (B to H) Chemical formulas of boceprevir, telaprevir, asunaprevir, simeprevir, paritaprevir, vaniprevir, and grazoprevir in the group of HCV protease inhibitors.
