Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | CYTOCHROME B5 | polymer | 93 | 10651.7 | 1 | UniProt (P00171) Pfam (PF00173) | Bos taurus (cattle) | |
| 2 | B (A) | PROTOPORPHYRIN IX CONTAINING FE | non-polymer | 616.5 | 1 | Chemie (HEM) | |||
| 3 | C (A) | water | water | 18.0 | 117 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 10651.7 | |
| Non-Polymers* | Number of molecules | 1 |
| Total formula weight | 616.5 | |
| All* | Total formula weight | 11268.2 |
