Table 3.
Physicochemical properties of SARS-CoV-2 epitopes
| Epitope | Molecular weight | Theoretical pI | Extinction coefficient | Instability index | Aliphatic index | GRAVY |
|---|---|---|---|---|---|---|
| A1 | 1316.48 | 11.00 | Not visible by UV spectrophotometry | 7.42 | 56.67 | −0.550 |
| A2 | 2455.69 | 8.39 | 9970 | 86.29 unstable | 15.26 | −1.505 |
| A3 | 1355.46 | 4.00 | 125 | −8.89 | 27.86 | −0.071 |
| A7 | 1947.26 | 5.96 | Not visible by UV spectrophotometry | 27.39 | 146.11 | 0.650 |
| A9 | 1142.32 | 3.80 | Not visible by UV spectrophotometry | −14.06 | 176.36 | 1.291 |
| E13 | 2076.38 | 8.59 | Not visible by UV spectrophotometry | 121.50 unstable | 65.00 | −0.689 |
| E21 | 1815.18 | 8.75 | 1490 | 27.11 | 73.75 | 0.631 |
| E24 | 916.17 | 5.52 | Not visible by UV spectrophotometry | −0.54 | 227.78 | 3.056 |
| E29 | 1056.23 | 8.75 | Not visible by UV spectrophotometry | 8.89 | 130.00 | −0.589 |
| E30 | 1042.24 | 5.81 | Not visible by UV spectrophotometry | 51.69 unstable | 205.56 | 0.867 |
GRAVY, grand average of hydropathicity; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.