Scn4B Protein Sodium Channel Beta 4 Subunit is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| SCN4B Protein | |
|---|---|
| Protein Name | Sodium Channel Beta-4 Subunit |
| Gene | [SCN4B](/genes/scn4b) |
| Category | Protein |
| Path | /proteins/scn4b-protein |
| UniProt ID | Q9UQD0 |
| Protein Family | Sodium channel beta subunit |
The SCN4B protein (Sodium Channel Beta-4 Subunit) is an auxiliary subunit of voltage-gated sodium channels (Nav channels). This protein plays a crucial role in modulating channel trafficking, gating properties, and neuronal excitability. SCN4B encodes a 228-amino acid transmembrane protein that belongs to the immunoglobulin superfamily of cell adhesion molecules. Unlike the pore-forming alpha subunits, beta subunits function as auxiliary components that profoundly influence channel behavior and neuronal signaling.
SCN4B, as a beta-4 subunit, modulates voltage-gated sodium channels through multiple mechanisms:
In neuronal tissues, SCN4B critically regulates:
SCN4B exhibits differential expression across neural tissues:
SCN4B mutations and dysregulation are associated with epileptic phenotypes:
Given its expression in cardiac tissue:
SCN4B assembles with the sodium channel alpha subunits through:
Nav1.1/Nav1.2/Nav1.6 + Beta1/Beta2/Beta3/Beta4 + Ankyrin-G
The beta-4 subunit contains:
SCN4B interacts with key signaling pathways:
SCN4B interacts with:
The beta-4 subunit represents a promising target for:
Current research focuses on:
The study of Scn4B Protein Sodium Channel Beta 4 Subunit 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.