Ms4A2 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| FcεRIβ | |
|---|---|
| Protein Name | Fc Epsilon Receptor I Beta Chain |
| Gene | MS4A2 |
| UniProt ID | Q08431 |
| Molecular Weight | 26 kDa |
| Subcellular Localization | Plasma membrane |
| Expression | Mast cells, basophils, microglia |
MS4A2 (Membrane-Spanning 4-Domains A2), also known as FcεRIβ (Fc epsilon Receptor I beta chain), is a member of the MS4A family of membrane proteins. While primarily studied in the context of allergic inflammation and mast cell function, emerging research suggests potential roles for MS4A family members in neuroinflammation and neurodegenerative diseases.
MS4A2 is a single-pass transmembrane protein with four membrane-spanning domains. It contains a cytoplasmic N-terminus and extracellular C-terminus. The protein forms part of the high-affinity IgE receptor complex, functioning as a signaling amplifier.
MS4A2 (FcεRIβ) associates with the alpha chain (FCER1A) to form the high-affinity IgE receptor. This complex is expressed primarily on mast cells and basophils, where it mediates allergic responses.
Upon IgE binding, FcεRIβ facilitates downstream signaling through its ITAM (Immunoreceptor Tyrosine-based Activation Motif) motif, leading to calcium release and degranulation.
While direct evidence for MS4A2 in the central nervous system is limited, the MS4A family has been implicated in Alzheimer's disease:
The MS4A family represents a potential therapeutic target:
The study of Ms4A2 Protein 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.