3SJQ
Crystal structure of a small conductance potassium channel splice variant complexed with calcium-calmodulin
Entity
Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
1 | A, B | Calmodulin | polymer | 149 | 16852.5 | 2 | UniProt (P62161) Pfam (PF13499) UniProt (by SIFTS) (P0DP29) In PDB | Rattus norvegicus (rat) | CaM |
2 | C, D | Small conductance calcium-activated potassium channel protein 2 | polymer | 87 | 10443.2 | 2 | UniProt (P70604) Pfam (PF02888) In PDB | Rattus norvegicus (rat) | SK2, SKCa 2, SKCa2, KCa2.2 |
3 | A, B | CALCIUM ION | non-polymer | 40.1 | 8 | Chemie (CA) | |||
4 | D, A, B, C | 1-phenylurea | non-polymer | 136.2 | 4 | Chemie (PHU) | |||
5 | D, A, B | GLYCEROL | non-polymer | 92.1 | 6 | Chemie (GOL) | |||
6 | D, A, B, C | SULFATE ION | non-polymer | 96.1 | 8 | Chemie (SO4) | |||
7 | water | water | 18.0 | 340 | Chemie (HOH) |
Sequence modifications
C, D: 412 - 490 (UniProt: P70604)
PDB | External Database | Details |
---|---|---|
Ala 463 | - | variant |
Arg 464 | - | variant |
Lys 465 | - | variant |
Leu 491 | - | expression tag |
Glu 492 | - | expression tag |
His 493 | - | expression tag |
His 494 | - | expression tag |
His 495 | - | expression tag |
His 496 | - | expression tag |
His 497 | - | expression tag |
His 498 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
Polymers | Number of chains | 4 |
Total formula weight | 54591.6 | |
Non-Polymers* | Number of molecules | 26 |
Total formula weight | 2186.3 | |
All* | Total formula weight | 56777.9 |