4ER2
The active site of aspartic proteinases
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (E) | ENDOTHIAPEPSIN | polymer | 330 | 33813.9 | 1 | UniProt (P11838) Pfam (PF00026) | Cryphonectria parasitica (chestnut blight fungus) | |
| 2 | B (I) | PEPSTATIN | polymer | 6 | 685.9 | 1 | BIRD (PRD_000557) | Streptomyces argenteolus subsp. toyonakensis | |
| 3 | C, D, E (E) | SULFATE ION | non-polymer | 96.1 | 3 | Chemie (SO4) | |||
| 4 | F, G (E, I) | water | water | 18.0 | 343 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 34499.7 | |
| Non-Polymers* | Number of molecules | 3 |
| Total formula weight | 288.2 | |
| All* | Total formula weight | 34787.9 |
