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Sodium channel protein beta-subunits SCN1B-SCN4B (SCN1B-SCN4B)
- Target
- SCN1B-SCN4B
- Molecular classification
- Ion channel subunit, Voltage-gated sodium channel subunit
01
Overview
Sodium channel beta-subunits, encoded by the SCN1B to SCN4B genes, are crucial regulatory proteins that modulate the function of voltage-gated sodium channels (VGSCs). These subunits influence the kinetics and localization of sodium channels, affecting excitability in neurons and cardiomyocytes. Mutations in these genes are linked to conditions such as epilepsy, cardiac arrhythmias, and cancer. They also participate in cell-cell and cell-matrix adhesion and may influence transcriptional regulation.
- Other names
- β1 subunitβ2 subunitβ3 subunitβ4 subunitSCN1BSCN2BSCN3BSCN4B
02
Mechanism of action
Modulates the kinetics and localization of voltage-gated sodium channels
03
Biological functions
Modulation of sodium currentsCell adhesionCell signalingNeuronal migrationPathfindingRegulation of membrane excitability
04
Disease associations
EpilepsyCardiac arrhythmiasLong QT syndromeCancer
05
Safety considerations
Potential for cardiac and neurological side effects due to altered sodium channel function.
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