Table 1.

Percent identity matrix of the S-proteins of human coronaviruses.

	229E CoV	NL63 CoV	OC43 CoV	KU1 CoV	MERS CoV	SARS CoV	SARS CoV-2
229E CoV	100	64.07	28.46	28.18	27.53	27.25	27.17
NL63 CoV	64.07	100	28.55	27.44	25.41	25.35	26.17
OC43 CoV	28.46	28.55	100	66.21	32.87	31.81	30.53
KU1 CoV	28.18	27.44	66.21	100	32.50	31.05	30.15
MERS CoV	27.53	25.41	32.87	32.50	100	32.27	31.93
SARS CoV	27.25	25.35	31.81	31.05	32.27	100	77.46
SARS CoV-2	27.17	26.17	30.53	30.15	31.93	77.46	100