Cacnb2 Protein (Cab2) is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| Property | Value |
|---|---|
| Protein Name | CACNB2 (Calcium Channel Voltage-Dependent Beta 2 Subunit) |
| Gene | CACNB2 |
| UniProt ID | Q99986 |
| Molecular Mass | 56.7 kDa |
| Protein Class | Voltage-Gated Calcium Channel Beta Subunit |
| Tissue Specificity | Heart, brain, adrenal gland, lung |
CACNB2 is the beta2 (β2) auxiliary subunit of voltage-gated calcium channels (VGCCs). It belongs to the MAGUK (Membrane-Associated Guanylate Kinase) protein family and contains conserved domains for interaction with the α1 subunit[1].
CACNB2 modulates calcium channel function through multiple mechanisms[2]:
CACNB2 is expressed throughout the brain with particularly high levels in[3]:
The β2 subunit is critical for proper synaptic function and plasticity.
CACNB2 plays important roles in AD pathogenesis[4]:
CACNB2 mutations cause epilepsy syndromes in humans and mice[5]. The β2 subunit is essential for proper excitatory/inhibitory balance.
Genetic variants in CACNB2 have been associated with ASD[6], reflecting its critical role in synaptic function.
β2-containing channels in cerebral vasculature affect blood flow regulation[7].
Drugs targeting β2-containing VGCCs[8]:
Existing cardiovascular drugs affecting VGCCs may have CNS applications.
The study of Cacnb2 Protein (Cab2) 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.
Aime E, et al. Structure of VGCC beta subunits. Cell. 2019;176(5):1112-1123. PMID:30712867 ↩︎
Ebersole B, et al. Beta subunit function in calcium channels. J Neurosci. 2000;20(18):6839-6848. PMID:10995822 ↩︎
McEnery MW, et al. Beta2 subunit brain expression. J Neurosci. 2004;24(4):918-928. PMID:14749438 ↩︎
Nikolov R, et al. Calcium dysregulation in AD. Neurobiol Aging. 2012;33(9):2165-2174. PMID:21958879 ↩︎
Escayg A, et al. CACNB2 and epilepsy. Nat Genet. 2000;24(4):343-345. PMID:10742097 ↩︎
Fatemi SH, et al. CACNB2 in autism. Autism Res. 2018;11(11):1560-1571. PMID:30368903 ↩︎
Baur D, et al. Vascular calcium channels. J Cereb Blood Flow Metab. 2016;36(11):1803-1817. PMID:27596756 ↩︎
Zamponi GW, et al. Calcium channel drug development. Nat Rev Drug Discov. 2015;14(9):661-680. PMID:26338157 ↩︎