4GNW
Crystal structure of nitrophorin 4 triple mutant complex with ammonia
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) | Nitrophorin-4 | polymer | 184 | 20289.7 | 2 | UniProt (Q94734) Pfam (PF02087) | Rhodnius prolixus (Triatomid bug) | NP4 |
| 2 | C, F (A, B) | PROTOPORPHYRIN IX CONTAINING FE | non-polymer | 616.5 | 2 | Chemie (HEM) | |||
| 3 | D, G (A, B) | AMMONIA | non-polymer | 17.0 | 2 | Chemie (NH3) | |||
| 4 | E, H (A, B) | PHOSPHATE ION | non-polymer | 95.0 | 2 | Chemie (PO4) | |||
| 5 | I, J (A, B) | water | water | 18.0 | 449 | Chemie (HOH) |
Sequence modifications
A, B: 1 - 184 (UniProt: Q94734)
| PDB | External Database | Details |
|---|---|---|
| Asn 30 | Asp 51 | engineered mutation |
| Gln 32 | Glu 53 | engineered mutation |
| Asn 35 | Asp 56 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 40579.4 | |
| Non-Polymers* | Number of molecules | 6 |
| Total formula weight | 1457.0 | |
| All* | Total formula weight | 42036.4 |
