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Voltage-gated potassium channel that mediates transmembrane potassium transport in excitable membranes. Forms tetrameric potassium-selective channels through which potassium ions pass in accordance with their electrochemical gradient. The channel alternates between opened and closed conformations in response to the voltage difference across the membrane. Can form functional homotetrameric channels and heterotetrameric channels that contain variable proportions of KCNA1, KCNA2, KCNA4, KCNA5, and possibly other family members as well; channel properties depend on the type of alpha subunits that are part of the channel (PubMed:12130714). Channel properties are modulated by cytoplasmic beta subunits that regulate the subcellular location of the alpha subunits and promote rapid inactivation (PubMed:12130714). Homotetrameric channels display rapid activation and slow inactivation (PubMed:8505626, PubMed:12130714). May play a role in regulating the secretion of insulin in normal pancreatic islets. Isoform 2 exhibits a voltage-dependent recovery from inactivation and an excessive cumulative inactivation (PubMed:11524461).
| Uniprot primary ID | P22460 |
| PDB ID | |
| DrugBank ID | DB06637 |
| BioGrid ID | 109943 |
| GuidetoPHARMACOLOGY ID | 542 |
| PharmGKB ID | PA208 |
| KEGG ID | hsa:3741 |
| DIP ID | DIP-42010N |
| STRING ID | 9606.ENSP00000252321 |
| IntAct ID | P22460 |
| DMDM | 146345443 |
| BRENDA | |
| Reactome | R-HSA-1296072 |
| SignaLink | |
| BioCyc | |
| Entrez Gene (Gene ID) | 3741 |
| BindingDB | P22460 |
| Fingerprint type | Sensitivity | SEN_std | Specificity | SPE_std | Accuracy | ACC_std | F1-score | F1-score_std | AUC | AUC_std | MCC | MCC_std | Download model |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FP2 fingerprints | 0.606 | 0.005 | 0.994 | 0.003 | 0.800 | 0.000 | 0.752 | 0.004 | 0.930 | 0.000 | 0.652 | 0.004 | Download |
| Estate fingerprints | 0.773 | 0.005 | 0.693 | 0.003 | 0.733 | 0.005 | 0.744 | 0.005 | 0.830 | 0.000 | 0.470 | 0.008 | Download |
| MACCS fingerprints | 0.672 | 0.004 | 0.812 | 0.003 | 0.742 | 0.004 | 0.724 | 0.005 | 0.819 | 0.003 | 0.491 | 0.006 | Download |
| Daylight fingerprints | 0.639 | 0.006 | 0.761 | 0.000 | 0.700 | 0.000 | 0.682 | 0.004 | 0.750 | 0.000 | 0.405 | 0.005 | Download |
| ECFP2 fingerprints | 0.921 | 0.003 | 0.949 | 0.003 | 0.935 | 0.005 | 0.935 | 0.005 | 0.980 | 0.000 | 0.870 | 0.005 | Download |
| ECFP4 fingerprints | 0.915 | 0.005 | 0.985 | 0.004 | 0.950 | 0.000 | 0.949 | 0.003 | 0.990 | 0.000 | 0.901 | 0.006 | Download |
| ECFP6 fingerprints | 0.893 | 0.005 | 0.993 | 0.000 | 0.943 | 0.005 | 0.940 | 0.000 | 0.990 | 0.000 | 0.892 | 0.006 | Download |
| Positive dataset | Negative dataset |
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E-mail: biomed@csu.edu.cn
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