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Voltage-gated Potassium Channel Subfamily A Member 2 (Kv1.2)
- Target
- Kv1.2
- Molecular classification
- Ion channel, Potassium channel, Voltage-gated potassium channel
01
Overview
Kv1.2 is a voltage-gated potassium channel that plays crucial roles in regulating neuronal excitability and action potential dynamics. It is encoded by the KCNA2 gene and belongs to the Shaker-related subfamily of voltage-gated potassium channels. Kv1.2 forms tetrameric potassium-selective channels that allow potassium ions to pass through cell membranes according to their electrochemical gradient. It is widely distributed throughout the body, with high expression in the brain, central nervous system, and heart. Kv1.2 channels are essential for normal neuronal function, preventing hyperexcitability and modulating synaptic transmission. They are also implicated in cardiovascular function through the regulation of vascular tone. Kv1.2 channels can be blocked by toxins like Dendrotoxins and Charybdotoxin.
- Other names
- Potassium voltage-gated channel subfamily A member 2KCNA2
02
Mechanism of action
Channel blockade (pore occlusion)
03
Biological functions
Action potential regulationMembrane repolarizationNeuronal excitability controlTransmembrane potassium transportRegulation of vascular tone
04
Disease associations
Neurological disorders (related to neuronal hyperexcitability)Cardiovascular disease (related to vascular tone regulation)
05
Safety considerations
Potential for affecting neuronal excitability and cardiovascular functionOff-target effects due to sequence homology with other potassium channels
06
Interacting drugs
Dendrotoxins (DTxs)
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