SARS-CoV-2, Early Entry Events

Table 2

Overview-SARS-CoV-2 S protein processing.

Infection stage	Location	Protease
Viral attachment	Cell surface	Furin/TMPRRSS2
Viral endocytosis	Endosome/lysosome	Cathepsins L/B and furin
Viral packaging	Virus producing cell	Furin
Viral release	Extracellular space	Elastase