1R3I
potassium channel KcsA-Fab complex in Rb+
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (L) | Antibody Fab fragment light chain | polymer | 212 | 23435.7 | 1 | Pfam (PF07654) UniProt (by SIFTS) (P01837) | Mus musculus (house mouse) | |
| 2 | B (H) | Antibody Fab fragment heavy chain | polymer | 219 | 23411.2 | 1 | Pfam (PF07654) UniProt (by SIFTS) (P01868) | Mus musculus (house mouse) | |
| 3 | C (C) | Voltage-gated potassium channel | polymer | 124 | 13211.6 | 1 | UniProt (P0A334) Pfam (PF00520) Pfam (PF07885) | Streptomyces lividans | |
| 4 | D (H) | NONAN-1-OL | non-polymer | 144.3 | 1 | Chemie (F09) | |||
| 5 | E, F, G, H (C) | RUBIDIUM ION | non-polymer | 85.5 | 4 | Chemie (RB) | |||
| 6 | I (C) | DIACYL GLYCEROL | non-polymer | 625.0 | 1 | Chemie (DGA) | |||
| 7 | J, K, L (L, H, C) | water | water | 18.0 | 172 | Chemie (HOH) |
Sequence modifications
C: 1 - 124 (UniProt: P0A334)
| PDB | External Database | Details |
|---|---|---|
| Ala 2 | Pro 2 | engineered mutation |
| Cys 90 | Leu 90 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 3 |
| Total formula weight | 60058.6 | |
| Non-Polymers* | Number of molecules | 6 |
| Total formula weight | 1111.1 | |
| All* | Total formula weight | 61169.7 |
