3IFX
Crystal structure of the Spin-labeled KcsA mutant V48R1
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 | Voltage-gated potassium channel | polymer | 129 | 13942.4 | 4 | UniProt (P0A334) Pfam (PF00520) Pfam (PF07885) In PDB | Streptomyces lividans | |
2 | A, B | POTASSIUM ION | non-polymer | 39.1 | 2 | Chemie (K) | |||
3 | A, B, C, D | S-[(1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)methyl] methanesulfonothioate | non-polymer | 264.4 | 4 | Chemie (MTN) | |||
4 | B | TETRABUTYLAMMONIUM ION | non-polymer | 242.5 | 1 | Chemie (TBA) | |||
5 | water | water | 18.0 | 3 | Chemie (HOH) |
Sequence modifications
A, B, C, D: 1 - 123 (UniProt: P0A334)
PDB | External Database | Details |
---|---|---|
Cys 48 | Val 48 | engineered mutation |
His 124 | - | expression tag |
His 125 | - | expression tag |
His 126 | - | expression tag |
His 127 | - | expression tag |
His 128 | - | expression tag |
His 129 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
Polymers | Number of chains | 4 |
Total formula weight | 55769.5 | |
Non-Polymers* | Number of molecules | 7 |
Total formula weight | 1378.2 | |
All* | Total formula weight | 57147.7 |