2GSK
Structure of the BtuB:TonB Complex
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 | 590 | 65954.8 | 1 | UniProt (P06129) Pfam (PF07715) Pfam (PF00593) | Escherichia coli | BTUB; Cobalamin receptor; Outer membrane cobalamin translocator |
| 2 | B (B) | protein TONB | polymer | 81 | 9247.7 | 1 | UniProt (P94739) Pfam (PF03544) UniProt (by SIFTS) (P02929) | Escherichia coli | |
| 3 | C, D (A) | CALCIUM ION | non-polymer | 40.1 | 2 | Chemie (CA) | |||
| 4 | E (A) | CYANOCOBALAMIN | non-polymer | 1356.4 | 1 | Chemie (CNC) | |||
| 5 | F, G, H, I (A) | LAURYL DIMETHYLAMINE-N-OXIDE | non-polymer | 229.4 | 4 | Chemie (LDA) | |||
| 6 | J, K, L (A) | N-OCTANE | non-polymer | 114.2 | 3 | Chemie (OCT) | |||
| 7 | M, N (A) | HEXANE | non-polymer | 86.2 | 2 | Chemie (HEX) | |||
| 8 | O, P (A, B) | water | water | 18.0 | 274 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 75202.5 | |
| Non-Polymers* | Number of molecules | 12 |
| Total formula weight | 2869.2 | |
| All* | Total formula weight | 78071.7 |
