Kcnk2 Protein (Task 1 Potassium Channel) is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
:: infobox .infobox-protein
| KCNK2 Protein (TASK-1 Potassium Channel) | |
|---|---|
| Gene | KCNK2 |
| UniProt | O95069 |
| Molecular Weight | ~56 kDa |
| Subcellular Localization | Plasma membrane |
| Protein Family | Two-pore domain potassium (K2P) channel family |
| Aliases | TASK1, K2P2.1, TREK-1 |
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TASK-1 (KCNK2) is a member of the two-pore domain potassium (K2P) channel family, which regulates background potassium conductance and neuronal excitability. These channels play critical roles in maintaining the resting membrane potential and responding to physiological and pathological stimuli. KCNK2 channels are widely expressed in the brain and have been implicated in various neurological conditions including epilepsy, migraine, and neurodegenerative diseases.
KCNK2 (TASK-1) is a two-pore domain potassium channel with four transmembrane segments and two pore domains (P1 and P2). The functional channel is a dimer, with each subunit containing two pore-forming loops. The channel belongs to the TASK subfamily of K2P channels.
TASK-1 channels regulate neuronal excitability:
KCNK2 mutations are associated with epilepsy. Loss of TASK-1 function leads to neuronal hyperexcitability and seizure susceptibility.
Altered TASK-1 channel expression has been reported in PD models. The channels may play a role in dopaminergic neuron survival and motor control.
KCNK2 variants have been linked to migraine with aura, possibly due to altered cortical excitability.
TASK-1 channels are sensitive to ischemia and may contribute to neuronal death during stroke.
KCNK2 modulators are being investigated for:
The study of Kcnk2 Protein (Task 1 Potassium Channel) has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.