7MHR
KcsA E71V closed gate with K+
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 heavy chain | polymer | 219 | 23411.2 | 1 | Mus musculus | ||
| 2 | B (B) | Fab light chain | polymer | 212 | 23435.7 | 1 | Mus musculus | ||
| 3 | C (C) | pH-gated potassium channel KcsA | polymer | 124 | 13181.6 | 1 | UniProt (P0A334) Pfam (PF00520) Pfam (PF07885) | Streptomyces lividans | Streptomyces lividans K+ channel,SKC1 |
| 4 | D, E, F (C) | POTASSIUM ION | non-polymer | 39.1 | 3 | Chemie (K) | |||
| 5 | G, H, I (A, B, C) | water | water | 18.0 | 223 | Chemie (HOH) |
Sequence modifications
C: 3 - 124 (UniProt: P0A334)
| PDB | External Database | Details |
|---|---|---|
| Met 1 | - | initiating methionine |
| Ala 2 | - | expression tag |
| Val 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 | 60028.6 | |
| Non-Polymers* | Number of molecules | 3 |
| Total formula weight | 117.3 | |
| All* | Total formula weight | 60145.9 |
