1MFT
Crystal Structure Of Four-Helix Bundle Model
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)  | Four-helix bundle model | polymer | 53 | 6477.4 | 2 | Escherichia coli | due ferri (II) turn mutant | |
| 2 | C, D (A, B)  | ZINC ION | non-polymer | 65.4 | 2 | Chemie (ZN) | |||
| 3 | E, F (A, B)  | water | water | 18.0 | 13 | Chemie (HOH) | 
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 | 
| Total formula weight | 12954.8 | |
| Non-Polymers* | Number of molecules | 2 | 
| Total formula weight | 130.8 | |
| All* | Total formula weight | 13085.6 | 






