4LBE
Structure of KcsA with R122A mutation
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | Fab light chain | polymer | 219 | 23411.2 | 1 | Mus musculus (mouse) | ||
| 2 | B (B) | Fab heavy chain | polymer | 212 | 23435.7 | 1 | Mus musculus (mouse) | ||
| 3 | C (C) | pH-gated potassium channel KcsA | polymer | 130 | 13990.4 | 1 | UniProt (P0A334) Pfam (PF00520) Pfam (PF07885) | Streptomyces lividans | Streptomyces lividans K+ channel, SKC1 |
| 4 | D (A) | NONAN-1-OL | non-polymer | 144.3 | 1 | Chemie (F09) | |||
| 5 | E (C) | DIACYL GLYCEROL | non-polymer | 625.0 | 1 | Chemie (DGA) | |||
| 6 | F, G, H (C) | POTASSIUM ION | non-polymer | 39.1 | 3 | Chemie (K) | |||
| 7 | I, J, K (A, B, C) | water | water | 18.0 | 89 | Chemie (HOH) |
Sequence modifications
C: 2 - 124 (UniProt: P0A334)
| PDB | External Database | Details |
|---|---|---|
| Met -5 | - | expression tag |
| His -4 | - | expression tag |
| His -3 | - | expression tag |
| His -2 | - | expression tag |
| His -1 | - | expression tag |
| His 0 | - | expression tag |
| His 1 | - | expression tag |
| Ala 122 | Arg 122 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 3 |
| Total formula weight | 60837.4 | |
| Non-Polymers* | Number of molecules | 5 |
| Total formula weight | 886.6 | |
| All* | Total formula weight | 61723.9 |
