Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B (A, B) | Phosphodiesterase 9A | polymer | 326 | 38546.6 | 2 | UniProt (Q53Y40) Pfam (PF00233) UniProt (by SIFTS) (O76083) | Homo sapiens (human) | |
| 2 | C, F (A, B) | ZINC ION | non-polymer | 65.4 | 2 | Chemie (ZN) | |||
| 3 | D, G (A, B) | MAGNESIUM ION | non-polymer | 24.3 | 2 | Chemie (MG) | |||
| 4 | E, H (A, B) | 3-ISOBUTYL-1-METHYLXANTHINE | non-polymer | 222.2 | 2 | Chemie (IBM) | |||
| 5 | I, J (A, B) | water | water | 18.0 | 195 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 77093.1 | |
| Non-Polymers* | Number of molecules | 6 |
| Total formula weight | 623.9 | |
| All* | Total formula weight | 77717.1 |
