Table 2. Hydrogen-bonding and salt-bridge interactions at the IsdHN2N3–metHb interfaces.
| IsdHN2N3 (chain C) | Hb α subunit (chain A) | Distance (Å) |
|---|---|---|
| Tyr443 OH | Asn9 OD1 | 2.71 |
| Lys391 NZ | Ala71 O | 3.13 |
| Tyr421 OH | Asp74 OD2 | 2.52 |
| Tyr495 OH | Ser81 O | 3.90 |
| Lys503 NZ | Ser81 OG | 3.81 |
| Tyr495 OH | Asp85 OD2 | 2.72 |
| Thr392 OG1 | Lys11 NZ | 2.98 |
| Ser370 OG | Lys11 NZ | 2.83 |
| Glu449 OE2 | Lys16 NZ | 2.92 |
| Tyr365 OH | Ala19 N | 3.39 |
| Tyr646 OH | His45 NE2 | 3.24 |
| Glu562 OE2 | Gln54 NE2 | 3.87 |
| Val564 O | Gln54 NE2 | 3.58 |
| Ser563 O | Gln54 NE2 | 3.45 |
| Lys499 NZ | Asp85 OD2 | 3.63 |
| Glu449 OE1 | Lys16 NZ | 3.38 |
| Glu449 | Lys16 NZ | 2.92 |
| Haem O1D | Tyr646 OH | 2.95 |
| Haem O2D | Tyr646 OH | 2.84 |