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Target intelligence / Profile preview
Voltage-dependent sodium channel subunit alpha
- Molecular classification
- Ion channel, Voltage-gated ion channel, Sodium channel
01
Overview
The voltage-dependent sodium channel alpha subunit is a large transmembrane protein forming the core pore through which sodium ions flow during electrical signaling events. Its modular architecture underlies both its function—rapidly activating/inactivating upon changes in membrane potential—and its role as a target for genetic mutations leading to neurological or muscular disorders. It operates independently but exhibits altered properties when associated with auxiliary beta subunits or targeted pharmacologically.
02
Mechanism of action
Blockage of sodium ion flow through the channel pore, modulation of channel gating kinetics
03
Biological functions
Action potential initiation and propagationSodium ion transmembrane transportVoltage sensingNeuronal excitabilityMuscle contraction
04
Disease associations
EpilepsyCardiac arrhythmiaMyotoniaPeriodic paralysisChronic painNeurological disordersMuscular disorders
05
Safety considerations
Cardiac side effectsNeurological side effectsArrhythmia
06
Interacting drugs
Local anesthetics
3 more in the full profile.
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