A cluster of acidic residues in the cytoplasmic domain of SARS-CoV-2 Spike is required for virion-incorporation and infectivity.

Stoneham CA, Singh R, De Leon A, Tafelmeyer P, Acosta F, Fuori A, Anderson M, Ramirez PW, Schwartzer-Sperber HS, Pillai S, Lewinski MK, Guatelli J