3M8D
Crystal structure of spin-labeled BtuB V10R1 with bound calcium and cyanocobalamin
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | Vitamin B12 transporter btuB | polymer | 594 | 66390.2 | 1 | UniProt (P06129) Pfam (PF07715) Pfam (PF00593) | Escherichia coli | |
| 2 | B (A) | CYANOCOBALAMIN | non-polymer | 1356.4 | 1 | Chemie (CNC) | |||
| 3 | C, D, E, F, G... (A) | (HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE | non-polymer | 306.4 | 6 | Chemie (C8E) | |||
| 4 | I (A) | S-[(1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)methyl] methanesulfonothioate | non-polymer | 264.4 | 1 | Chemie (MTN) | |||
| 5 | J, K, L (A) | CALCIUM ION | non-polymer | 40.1 | 3 | Chemie (CA) | |||
| 6 | M (A) | water | water | 18.0 | 76 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 66390.2 | |
| Non-Polymers* | Number of molecules | 11 |
| Total formula weight | 3579.6 | |
| All* | Total formula weight | 69969.8 |
