4Z7P
X-ray structure of racemic ShK Q16K toxin
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | Potassium channel toxin kappa-stichotoxin-She1a | polymer | 35 | 4070.9 | 1 | UniProt (P29187) | Stoichactis helianthus | kappa-SHTX-She1a,Potassium channel toxin ShK |
| 2 | B, C, D, E, F (A) | SULFATE ION | non-polymer | 96.1 | 5 | Chemie (SO4) | |||
| 3 | G (A) | water | water | 18.0 | 38 | Chemie (HOH) |
Sequence modifications
A: 1 - 35 (UniProt: P29187)
| PDB | External Database | Details |
|---|---|---|
| Lys 16 | Gln 16 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 4070.9 | |
| Non-Polymers* | Number of molecules | 5 |
| Total formula weight | 480.3 | |
| All* | Total formula weight | 4551.3 |
