Fig. 1: Schematic of SARS-CoV-2 variants.

The most representative amino acid mutations of each variant were selected to construct pseudotyped virus for this study. Each mutation in each SARS-CoV-2 variant is indicated relative to the reference D614G sequence. A dot indicates an identical amino acid at the indicated position, while a dash indicates a deletion at that point. SP sigmal peptide, TM transmembrane domain, RBD Receptor-binding domain.