2ATK
Structure of a mutant KcsA K+ channel
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | ANTIBODY FAB FRAGMENT HEAVY CHAIN | polymer | 219 | 23411.2 | 1 | Mus musculus (house mouse) | ||
| 2 | B (B) | ANTIBODY FAB FRAGMENT LIGHT CHAIN | polymer | 212 | 23435.7 | 1 | Mus musculus (house mouse) | ||
| 3 | C (C) | Voltage-gated potassium channel | polymer | 124 | 13153.5 | 1 | UniProt (P0A334) Pfam (PF00520) Pfam (PF07885) | Streptomyces lividans | POTASSIUM CHANNEL KCSA |
| 4 | D, E, F, G, H... (C) | POTASSIUM ION | non-polymer | 39.1 | 7 | Chemie (K) | |||
| 5 | K (C) | NONAN-1-OL | non-polymer | 144.3 | 1 | Chemie (F09) | |||
| 6 | L, M, N (A, B, C) | water | water | 18.0 | 43 | Chemie (HOH) |
Sequence modifications
C: 1 - 124 (UniProt: P0A334)
| PDB | External Database | Details |
|---|---|---|
| Ala 2 | Pro 2 | engineered mutation |
| Ala 71 | Glu 71 | engineered mutation |
| Cys 90 | Leu 90 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 3 |
| Total formula weight | 60000.5 | |
| Non-Polymers* | Number of molecules | 8 |
| Total formula weight | 417.9 | |
| All* | Total formula weight | 60418.5 |
