Figure 3
(a) Stereoview of the superimposed homodimers of MERS-CoV 3CLpro (crystal form II, green ribbons) and BatCoV-HKU4 (PDB entry 2yna, red ribbons). (b) Stereoview of the superimposed homodimers of MERS-CoV 3CLpro and SAR-CoV 3CLpro (PDB entry 1uk3, red ribbons; Yang et al., 2003). |