Figure 2.

Mutational profiles of the Variants of Concern’s spike protein. Mutations that differed from those of other VOCs are denoted by different VOC-specific colours, while the shared mutations are represented by the black colour. SP, Signal Peptide; NTD, N-terminal domain; RBD, Receptor-Binding Domain; RBM, Receptor-Binding Motif; SD1, subdomain 1; SD2, subdomain 2; FP, Fusion peptide; HR1, Heptad repeat region 1; HR2, Heptad repeat region 2; TM, Transmembrane domain; CP, Cytoplasmic domain.