Table 2.
Predicted histidine pKa values for unbound L-selectin (left) and L-selectin bound to PSGL-1 (right)
| Residue | pKa | pKa∗ |
|---|---|---|
| H4 | 6.9 | 7.1 |
| H110 | 4.6 | 6.5 |
| H130 | 6.8 | 6.9 |
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