Table III. Calculated pKa values for the residues that switch protonation state between pH 5 and 7 for AtPME3, AtPMEI4, and AtPMEI9.
| Residue | AtPME3 | AtPMEI4 | AtPMEI9 |
|---|---|---|---|
| Asp-118 | 6.59 | – | – |
| Asp-153 | 5.00 | – | – |
| Asp-188 | 5.49 | – | – |
| Glu-44 | 5.28 | – | – |
| Glu-225 | 5.08 | – | – |
| Glu-243 | 5.55 | – | – |
| His-108 | 6.09 | – | – |
| His-169 | 5.43 | – | – |
| Asp-84 | – | 5.72 | – |
| Asp-129 | – | 5.01 | – |
| Glu-132 | – | 5.13 | – |
| His-3 | – | 5.94 | – |
| His-70 | – | 6.17 | – |
| His-164 | – | 5.42 | – |
| Asp-35 | – | – | 5.40 |
| Asp-131 | – | – | 5.10 |
| Glu-126 | – | – | 6.71 |
| Glu-135 | – | – | 5.10 |
| His-21 | – | – | 6.35 |
| His-32 | – | – | 6.47 |
| His-101 | – | – | 6.44 |
| His-152 | – | – | 6.20 |