Table 1.
Evaluated recombinant SARS-CoV-2 antigens.
| Recombinant Antigen |
Target | Region (aa) | Catalogue Number | Expression System |
Tag | Manufactured by |
|---|---|---|---|---|---|---|
| (A) SARS-CoV-2 | S1 | 16–685 | 40591-V08H | HEK293 cells | His | Sino Biological |
| (B) SARS-CoV-2 | S1+S2 ECD | 16–1213 | 40589-V08B1 | Baculovirus-insect cells | His | Sino Biological |
| (C) SARS-CoV-2 | S1 | 1–674 | REC1806 | HEK293 cells | Sheep Fc | Native Antigen |
aa, amino acid; ECD, extracellular domain; SARS-CoV-2, severe acute respiratory syndrome coronavirus-2; S1, spike subunit 1; S2, spike subunit 2; ECD, extra cellular domain; HEK, human embryonic kidney; His, histidine; Fc, Fc domain of immunoglobulin.