Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | Hemoglobin alpha subunit | polymer | 141 | 15150.4 | 1 | UniProt (P69905) Pfam (PF00042) | Homo sapiens (human) | Hemoglobin alpha chain, Alpha-globin |
| 2 | B (B) | Hemoglobin beta subunit | polymer | 146 | 15890.2 | 1 | UniProt (P68871) Pfam (PF00042) | Homo sapiens (human) | Hemoglobin beta chain, Beta-globin |
| 3 | C, G (A, B) | PROTOPORPHYRIN IX CONTAINING FE | non-polymer | 616.5 | 2 | Chemie (HEM) | |||
| 4 | D, H (A, B) | OXYGEN MOLECULE | non-polymer | 32.0 | 2 | Chemie (OXY) | |||
| 5 | E, F (A) | TOLUENE | non-polymer | 92.1 | 2 | Chemie (MBN) | |||
| 6 | I, J (A, B) | water | water | 18.0 | 230 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 31040.6 | |
| Non-Polymers* | Number of molecules | 6 |
| Total formula weight | 1481.2 | |
| All* | Total formula weight | 32521.8 |
