1N2Z
2.0 Angstrom structure of BtuF, the vitamin B12 binding protein of E. coli
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B | Vitamin B12 transport protein btuF | polymer | 245 | 27046.8 | 2 | UniProt (P37028) Pfam (PF01497) In PDB | Escherichia coli | |
| 2 | B, A | CADMIUM ION | non-polymer | 112.4 | 22 | Chemie (CD) | |||
| 3 | B, A | CHLORIDE ION | non-polymer | 35.5 | 6 | Chemie (CL) | |||
| 4 | B, A | CYANOCOBALAMIN | non-polymer | 1356.4 | 2 | Chemie (CNC) | |||
| 5 | A | TETRAETHYLENE GLYCOL | non-polymer | 194.2 | 1 | Chemie (PG4) | |||
| 6 | water | water | 18.0 | 377 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 54093.6 | |
| Non-Polymers* | Number of molecules | 31 |
| Total formula weight | 5592.7 | |
| All* | Total formula weight | 59686.4 |
