Protein

Coronavirus^a

Torovirus^b

Arterivirus^c

Spike glycoprotein

S

180-220

200

-

Large surface glycoprotein

G_L

-

-

30-45

Small surface glycoprotein

G_S

-

-

25

Membrane protein

M

23-35

27

16

Nucleocapsid protein

N

50-60

19

12

Small-envelope protein

E

9-12

nk

-

Hemagglutinin-esterase protein

HE

65

65

-