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Target intelligence / Profile preview
Potassium channel protein subunit alpha (None)
- Target
- None
- Molecular classification
- Ion channel, Potassium channel, Voltage-gated potassium channel subunit alpha, Calcium-activated potassium channel subunit alpha
01
Overview
The potassium channel protein subunit alpha is the principal pore-forming component of potassium (K⁺) channels, which are transmembrane proteins responsible for selective K⁺ ion transport across cell membranes. These channels play a critical role in regulating membrane potential and cellular excitability in various tissues, including the nervous system, heart, and muscles. Dysfunction or genetic mutations affecting these proteins have been linked to various diseases including cardiac arrhythmias (e.g., long QT syndrome), epilepsy, ataxia, and others.
02
Mechanism of action
Potassium channel modulation (opening or blocking)
03
Biological functions
Regulation of membrane potentialRegulation of cellular excitabilityPotassium ion transmembrane transportRepolarization of action potentialsRegulation of neuronal firing patternsControl of smooth muscle toneElectrical tuning in sensory cells
04
Disease associations
Cardiac arrhythmiasEpilepsyAtaxiaLong QT syndrome
05
Safety considerations
Off-target effects leading to cardiac or neurological issuesVariability in channel subunit composition affecting drug response
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