S:D614G and S:H655Y are gateway mutations that act epistatically to promote SARS-CoV-2 variant fitness
L. Yurkovetskiy, S. Egri, C. Kurhade…·J. Luban
This study shows that S:D614G and S:H655Y mutations enhance SARS-CoV-2 infectivity by stabilizing the Spike protein in an open RBD conformation, acting epistatically with the polybasic S1/S2 cleavage site.