3UM7
Crystal structure of the human two pore domain K+ ion channel TRAAK (K2P4.1)
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B (A, B) | Potassium channel subfamily K member 4 | polymer | 309 | 33585.8 | 2 | UniProt (Q9NYG8) Pfam (PF07885) | Homo sapiens (human) | TWIK-related arachidonic acid-stimulated potassium channel protein, TRAAK, Two pore potassium channel KT4.1, Two pore K(+) channel KT4.1 |
| 2 | C, D, E, F, G (A) | POTASSIUM ION | non-polymer | 39.1 | 5 | Chemie (K) |
Sequence modifications
A, B: 1 - 300 (UniProt: Q9NYG8)
| PDB | External Database | Details |
|---|---|---|
| Gln 104 | Asn 104 | engineered mutation |
| Gln 108 | Asn 108 | engineered mutation |
| Ser 301 | - | expression tag |
| Asn 302 | - | expression tag |
| Ser 303 | - | expression tag |
| Leu 304 | - | expression tag |
| Glu 305 | - | expression tag |
| Val 306 | - | expression tag |
| Leu 307 | - | expression tag |
| Phe 308 | - | expression tag |
| Gln 309 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 67171.6 | |
| Non-Polymers* | Number of molecules | 5 |
| Total formula weight | 195.5 | |
| All* | Total formula weight | 67367.1 |
