2QTO
An anisotropic model for potassium channel KcsA
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 | 97 | 10253.0 | 4 | UniProt (P0A334) Pfam (PF00520) Pfam (PF07885) | Streptomyces lividans | Potassium channel KcsA |
| 2 | E, F, G (A) | POTASSIUM ION | non-polymer | 39.1 | 3 | Chemie (K) | |||
| 3 | H (B) | water | water | 18.0 | 1 | Chemie (HOH) |
Sequence modifications
A, B, C, D: 23 - 119 (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 | 41011.8 | |
| Non-Polymers* | Number of molecules | 3 |
| Total formula weight | 117.3 | |
| All* | Total formula weight | 41129.1 |
