Gabrb2 — Gaba A Receptor Beta 2 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| GABA-A Receptor Beta 2 Subunit | |
|---|---|
| Gene Symbol | GABRB2 |
| Full Name | Gamma-aminobutyric acid type A receptor beta2 subunit |
| Chromosome | 5q34 |
| NCBI Gene ID | 2569 |
| OMIM | 137140 |
| Ensembl ID | ENSG00000145888 |
| UniProt ID | P47870 |
| Associated Diseases | Alzheimer's Disease, Epilepsy, Autism Spectrum Disorder, Intellectual Disability |
GABRB2 Gene is involved in biological pathways relevant to neurodegenerative diseases. It plays important roles in neuronal function, cellular signaling, or stress response mechanisms.
Dysregulation or mutations in this gene/protein contribute to the pathogenesis of Alzheimer's disease, Parkinson's disease, and related neurodegenerative disorders.
GABRB2 encodes the beta 2 subunit of the GABA-A receptor, a ligand-gated chloride channel that mediates fast inhibitory neurotransmission in the central nervous system. The GABA-A receptor is composed of multiple subunits (alpha, beta, gamma, delta, etc.) that combine to form a pentameric ligand-gated ion channel. The beta2 subunit is one of the most abundant and widely expressed subunits:
GABAergic inhibition is essential for:
GABRB2 is expressed throughout the brain with high levels in:
Expression is developmentally regulated, with distinct patterns in embryonic vs. adult brain.
| Disease | Variants | Inheritance | Mechanism |
|---|---|---|---|
| Alzheimer's Disease | S315R, R436H | Risk factor | Impaired inhibitory neurotransmission, network disinhibition |
| Epilepsy | R252Q, P301S, A305T | De novo/autosomal dominant | Reduced channel function, neuronal hyperexcitability |
| Autism Spectrum Disorder | GABRB2 duplications | Risk factor | Altered excitation/inhibition balance |
| Intellectual Disability | Frameshift mutations | Autosomal recessive | Severe developmental impairment |
Therapeutic approaches targeting GABA-A receptors include:
The study of Gabrb2 — Gaba A Receptor Beta 2 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.