Table 4.

Functional Components of SARS-CoV-2 S proteins and its corresponding amino acid positions (2,8)

Sr. No.	Functional components of spike protein	Amino acid position
1	N terminal domain	14–305
2	Receptor Binding Motif	437–508
3	Receptor Binding Domain	319–541
4	S1 Subunit	14–685
5	S2 Subunit	686–1273
6	Fusion Peptide	788–806
7	Heptad Repeat 1	912–984
8	Heptad Repeat 2	1163–1213
9	Transmembrane Domain	1214–1237
10	Cytoplasmic Domain	1238–1273