Fig. 2: RBD structures of the RaTG13 and PCoV_GX spike proteins.

a The RaTG13 and PCoV_GX RBDs are shown in side view. The RaTG13 RBD core is colored in magenta and the RBM in cyan; the PCoV_GX RBD core is colored in green and the RBM in cyan. Disulfide bonds are shown as yellow spheres with residues labeled. b Structural alignment of the RaTG13, PCoV_GX, and SARS-CoV-2 (PDB ID: 6M0J) RBDs. The RaTG13 RBD is colored in magenta, the PCoV_GX RBD is colored in green, and the SARS-CoV-2 RBD is in wheat. Aligned structures are shown in two orientations.