1J95
KCSA potassium channel with TBA (tetrabutylammonium) and potassium
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B, C, D (A, B, C, D) | VOLTAGE-GATED POTASSIUM CHANNEL | polymer | 125 | 13384.8 | 4 | UniProt (P0A334) Pfam (PF00520) Pfam (PF07885) | Streptomyces lividans | |
| 2 | E, F, G, I (A, B) | POTASSIUM ION | non-polymer | 39.1 | 4 | Chemie (K) | |||
| 3 | H (A) | TETRABUTYLAMMONIUM ION | non-polymer | 242.5 | 1 | Chemie (TBA) |
Sequence modifications
A, B, C, D: 1 - 125 (UniProt: P0A334)
| PDB | External Database | Details |
|---|---|---|
| Cys 90 | Leu 90 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 53539.2 | |
| Non-Polymers* | Number of molecules | 5 |
| Total formula weight | 398.9 | |
| All* | Total formula weight | 53938.0 |
