Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Structure of the SARS-CoV-2 virus. An RNA virus, SARS-CoV-2 consists of an envelope (E), membrane (M), spike (S), and nucleocapsid (N) proteins. The RNA is single positive-sense strand. Among those, M, S and E are glycoproteins in nature. The viral nucleo-capsid is made of proteinaceous coat capsid, inside which RNA and non-histone protein reside. SARS-CoV-2 also contains shorter spikes that possess hemagglutinin-esterase (HE) protein; their size is larger in case of Toroviruses
