8CTX
Crystal structure of a K+ selective NaK mutant (NaK2K) -K+,Tl+ complex
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 protein | polymer | 96 | 10640.5 | 2 | UniProt (C2R3K4) Pfam (PF07885) UniProt (by SIFTS) (Q81HW2) | Bacillus cereus m1550 | |
| 2 | C, D, E, F, G... (A, B) | THALLIUM (I) ION | non-polymer | 204.4 | 11 | Chemie (TL) | |||
| 3 | I, J (A) | POTASSIUM ION | non-polymer | 39.1 | 2 | Chemie (K) | |||
| 4 | P, Q (A, B) | water | water | 18.0 | 11 | Chemie (HOH) |
Sequence modifications
A, B: 20 - 110 (UniProt: C2R3K4)
| PDB | External Database | Details |
|---|---|---|
| Ala 19 | - | expression tag |
| Val 29 | Ile 29 | conflict |
| Tyr 66 | Asp 66 | conflict |
| Leu 111 | - | expression tag |
| Val 112 | - | expression tag |
| Pro 113 | - | expression tag |
| Arg 114 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 21281.0 | |
| Non-Polymers* | Number of molecules | 13 |
| Total formula weight | 2326.4 | |
| All* | Total formula weight | 23607.4 |
