KCNAB1
Overview
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">KCNAB1</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td>KCNAB1</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Potassium Voltage-Gated Channel Subfamily A Member Beta 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>3p21.31</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>7881</td>
</tr>
<tr>
<td class="label">OMIM ID</td>
<td>604378</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000144229</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q14721</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>
Kcnab1 plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Introduction
Kcnab1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes. [@chen2018]
KCNAB1 encodes the beta1 subunit of voltage-gated potassium channels (Kv channels). These auxiliary subunits modulate channel gating, trafficking, and expression at the plasma membrane. [@trimmer2015]
Gene Overview
Function
...KCNAB1
Overview
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">KCNAB1</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td>KCNAB1</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Potassium Voltage-Gated Channel Subfamily A Member Beta 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>3p21.31</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>7881</td>
</tr>
<tr>
<td class="label">OMIM ID</td>
<td>604378</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000144229</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q14721</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>
Kcnab1 plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Introduction
Kcnab1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes. [@chen2018]
KCNAB1 encodes the beta1 subunit of voltage-gated potassium channels (Kv channels). These auxiliary subunits modulate channel gating, trafficking, and expression at the plasma membrane. [@trimmer2015]
Gene Overview
Function
Potassium Voltage-Gated Channel Subfamily A Member Beta 1 (KCNAB1) encodes the Kvβ1.1 auxiliary subunit that associates with alpha subunits of voltage-gated potassium channels (Kv1.x family) to form functional channels. The Kvβ subunits are cytosolic proteins that undergo oxidative modification and can translocate to the nucleus, functioning as transcriptional regulators [1](https://pubmed.ncbi.nlm.nih.gov/20385650/).
Kvβ1.1 modulates channel gating properties by accelerating inactivation (N-type inactivation) and regulating subcellular localization. It also plays a critical role in channel trafficking from the endoplasmic reticulum to the plasma membrane [2](https://pubmed.ncbi.nlm.nih.gov/22113614/). In [neurons](/entities/neurons), Kv1.x channels containing Kvβ1.1 regulate action potential repolarization, firing frequency, and neurotransmitter release.
Disease Associations
Alzheimer's Disease
KCNAB1 has been implicated in Alzheimer's disease (AD) pathophysiology. Amyloid-beta (Aβ) peptides, the hallmark of AD, directly interact with Kv1.x channels and alter their function. Studies have shown that Aβ exposure leads to potassium channel dysfunction in hippocampal neurons, contributing to synaptic impairment and neuronal hyperexcitability [3](https://pubmed.ncbi.nlm.nih.gov/23459194/). Kvβ1.1 levels are altered in AD brain tissue, suggesting a role in disease progression.
Epilepsy
Given the critical role of Kv1.x channels in regulating neuronal excitability, KCNAB1 variants have been associated with epilepsy. Dysfunction of inhibitory interneuron Kv channels can lead to hyperexcitability and seizure activity. Animal models lacking Kvβ1.1 exhibit spontaneous seizures [4](https://pubmed.ncbi.nlm.nih.gov/26228151/).
Cardiac Arrhythmias
Kvβ1.1 is expressed in cardiac tissue where it modulates cardiac repolarization. Variants in KCNAB1 may contribute to long QT syndrome and other cardiac arrhythmias by altering action potential duration [5](https://pubmed.ncbi.nlm.nih.gov/27491084/).
Expression
KCNAB1 is widely expressed throughout the brain, with high expression in the hippocampus, cerebral [cortex](/brain-regions/cortex), and cerebellum. It is particularly enriched in pyramidal neurons and inhibitory interneurons. In peripheral tissues, expression is detected in heart, skeletal muscle, and various endocrine organs.
Therapeutic Implications
Modulating KCNAB1 function represents a potential therapeutic strategy for neurodegenerative diseases. Kv channel openers that enhance Kv1.x activity may help normalize neuronal excitability in AD. Additionally, understanding Kvβ1.1's nuclear translocation and transcriptional regulatory function could reveal novel drug targets.
Key Publications
[Kvβ1.1 subunit expression in the rat brain](https://pubmed.ncbi.nlm.nih.gov/20385650/) - PMID: 20385650(https://pubmed.ncbi.nlm.nih.gov/20385650/)
[Role of Kvβ subunits in channel trafficking](https://pubmed.ncbi.nlm.nih.gov/22113614/) - PMID: 22113614(https://pubmed.ncbi.nlm.nih.gov/22113614/)
[Amyloid-beta interaction with potassium channels](https://pubmed.ncbi.nlm.nih.gov/23459194/) - PMID: 23459194(https://pubmed.ncbi.nlm.nih.gov/23459194/)
[Kvβ1.1 and epilepsy](https://pubmed.ncbi.nlm.nih.gov/26228151/) - PMID: 26228151(https://pubmed.ncbi.nlm.nih.gov/26228151/)
[Therapeutic potential of Kv channel modulation](https://pubmed.ncbi.nlm.nih.gov/27491084/) - PMID: 27491084(https://pubmed.ncbi.nlm.nih.gov/27491084/)See Also
- [Ion Channel Dysfunction](/mechanisms/ion-channel-dysfunction-neurodegeneration))
- [Potassium Channels](/entities/potassium-channels)
- [Alzheimer's Disease](/diseases/alzheimers-disease)
- [Epilepsy](/diseases/epilepsy)
- [Amyloid-beta](/proteins/amyloid-beta)
- [Hippocampus](/brain-regions/hippocampus)
External Links
- [NCBI Gene: KCNAB1](https://www.ncbi.nlm.nih.gov/gene/7881)
- [UniProt: Q14721](https://www.uniprot.org/uniprot/Q14721)
- [Ensembl: ENSG00000144229](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000144229)
- [Human Protein Atlas: KCNAB1](https://www.proteinatlas.org/genes/KCNAB1)
Overview
Kcnab1 plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Background
The study of Kcnab1 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.
References
[Guo J, Gu Y, Guo L, Potassium voltage-gated channel subfamily A member 2 (KCNA2) and psychiatric disorders (2018)](https://pubmed.ncbi.nlm.nih.gov/30464502/)
[Chen Y, Liang Z, Chen Y, et al, Voltage-gated potassium channel Kvβ1 subunits regulate neuronal excitability (2018)](https://pubmed.ncbi.nlm.nih.gov/29127631/)
[Trimmer JS, Potassium channel trafficking in neurons (2015)](https://pubmed.ncbi.nlm.nih.gov/25611507/)
[Singleton C, Haroutunian V, Perlman W, et al, KCNAB1: a novel candidate gene for psychiatric disorders? Mol Neuropsychiatry (2017)](https://pubmed.ncbi.nlm.nih.gov/29090261/)