| hemoglobin → HasA → iron | 0.48 | |
| hemoglobin → HasA → high affinity | 0.35 | |
| hemoglobin → HasA → two alpha | 0.32 | |
| hemoglobin → HasA → two gamma polypeptide subunits | 0.32 | |
| hemoglobin → HasA → competitive binding affinity | 0.28 | |
| hemoglobin → HasA → quaternary structure | 0.28 | |
| hemoglobin → HasA → ferric iron | 0.16 |