?:abstract
|
-
SARS-CoV-2 variants with spike (S)-protein D614G mutations now predominate globally We therefore compare the properties of the mutated S protein (S(G614)) with the original (S(D614)) We report here pseudoviruses carrying S(G614) enter ACE2-expressing cells more efficiently than those with S(D614) This increased entry correlates with less S1-domain shedding and higher S-protein incorporation into the virion Similar results are obtained with virus-like particles produced with SARS-CoV-2 M, N, E, and S proteins However, D614G does not alter S-protein binding to ACE2 or neutralization sensitivity of pseudoviruses Thus, D614G may increase infectivity by assembling more functional S protein into the virion
|