4QNH
Calcium-calmodulin (T79D) complexed with the calmodulin binding domain from a small conductance potassium channel SK2-a
Entity
Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
1 | B | Small conductance calcium-activated potassium channel protein 2 | polymer | 102 | 12243.4 | 1 | UniProt (P70604) Pfam (PF02888) In PDB | Rattus norvegicus (rat) | SK2, SKCa 2, SKCa2, KCa2.2 |
2 | R | Calmodulin | polymer | 149 | 16866.5 | 1 | UniProt (P62161) In PDB | Rattus norvegicus (rat) | CaM |
3 | B | SULFATE ION | non-polymer | 96.1 | 1 | Chemie (SO4) | |||
4 | R | CALCIUM ION | non-polymer | 40.1 | 2 | Chemie (CA) | |||
5 | water | water | 18.0 | 187 | Chemie (HOH) |
Sequence modifications
B: 396 - 487 (UniProt: P70604)
R: 0 - 148 (UniProt: P62161)
PDB | External Database | Details |
---|---|---|
Met 394 | - | initiating methionine |
Gly 395 | - | expression tag |
Leu 488 | - | expression tag |
Glu 489 | - | expression tag |
His 490 | - | expression tag |
His 491 | - | expression tag |
His 492 | - | expression tag |
His 493 | - | expression tag |
His 494 | - | expression tag |
His 495 | - | expression tag |
PDB | External Database | Details |
---|---|---|
Asp 79 | Thr 80 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
Polymers | Number of chains | 2 |
Total formula weight | 29109.9 | |
Non-Polymers* | Number of molecules | 3 |
Total formula weight | 176.2 | |
All* | Total formula weight | 29286.1 |