SARS-CoV-2 3CLpro/3C-like protease Protein (sf9, His-Avi) is the recombinant Virus-derived SARS-CoV-2 3CLpro/3C-like protease protein, expressed by Sf9 insect cells , with N-His, N-Avi labeled tag. The total length of SARS-CoV-2 3CLpro/3C-like protease P