3FB8
KcsA Potassium channel in the open-conductive state with 20 A opening at T112 in the presence of Rb+ ion
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A | antibody fab fragment heavy chain | polymer | 219 | 23411.2 | 1 | Mus musculus | ||
| 2 | B | antibody fab fragment light chain | polymer | 212 | 23435.7 | 1 | Mus musculus | ||
| 3 | C | Voltage-gated potassium channel | polymer | 104 | 10927.6 | 1 | UniProt (P0A334) Pfam (PF00520) Pfam (PF07885) In PDB | Streptomyces lividans | |
| 4 | C | RUBIDIUM ION | non-polymer | 85.5 | 4 | Chemie (RB) | |||
| 5 | water | water | 18.0 | 4 | Chemie (HOH) |
Sequence modifications
C: 21 - 124 (UniProt: P0A334)
| PDB | External Database | Details |
|---|---|---|
| Gln 25 | His 25 | engineered mutation |
| Cys 90 | Leu 90 | engineered mutation |
| Gln 117 | Arg 117 | engineered mutation |
| Gln 120 | Glu 120 | engineered mutation |
| Gln 121 | Arg 121 | engineered mutation |
| Gln 122 | Arg 122 | engineered mutation |
| Gln 124 | His 124 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 3 |
| Total formula weight | 57774.6 | |
| Non-Polymers* | Number of molecules | 4 |
| Total formula weight | 341.9 | |
| All* | Total formula weight | 58116.4 |
