GABRB2 Protein is a protein that gaba-a receptors are the primary inhibitory neurotransmitter receptors in the central nervous system. the beta-2 subunit-containing receptors play crucial roles in:. This page describes its structure, normal nervous system function, role in neurodegenerative disease, and potential as a therapeutic target.
GABRB2 Protein is a protein that gaba-a receptors are the primary inhibitory neurotransmitter receptors in the central nervous system. the beta-2 subunit-containing receptors play crucial roles in:. This page describes its structure, normal nervous system function, role in neurodegenerative disease, and potential as a therapeutic target.
Structure and Domain Architecture
The GABRB2 protein encodes the beta-2 subunit of the GABA-A receptor, a member of the Cys-loop ligand-gated ion channel superfamily[@sigel2012]. GABA-A receptors are pentameric assemblies typically composed of two alpha, two beta, and one gamma or delta subunit.
Key structural features include:
Extracellular N-terminal domain: Contains the GABA binding site at alpha-beta subunit interfaces
Transmembrane domain: Four helices (M1-M4) form the ion channel pore
Intracellular loop: Between M3 and M4, contains phosphorylation sites and trafficking motifs
C-terminal extracellular domain: Forms part of the ligand binding pocket and benzodiazepine binding site[@miller2010]
The beta-2 subunit is essential for proper receptor assembly, trafficking, and pharmacological properties. Receptors containing the beta-2 subunit show distinct benzodiazepine sensitivity and gating characteristics[@rudolph2014].
Normal Function
GABA-A receptors are the primary inhibitory neurotransmitter receptors in the central nervous system. The beta-2 subunit-containing receptors play crucial roles in:
Synaptic inhibition: Fast inhibitory neurotransmission at postsynaptic membranes
Circuit regulation: Modulates neuronal networks controlling cognition, memory, and behavior
GABRB2 Protein is GABA-A receptor beta 2 subunit. It plays roles in neuronal function and has been implicated in various neurological conditions.
See Also
[Neurodegeneration](/diseases/neurodegeneration)
[Ion Channels](/entities/ion-channels)
[Protein Kinases](/entities/protein-kinases)
External Links
[UniProt](https://www.uniprot.org/)
References
[Sigel E, Steinmann ME, Structure, function, and modulation of GABA(A) receptors (2012)](https://pubmed.ncbi.nlm.nih.gov/23038254/)
[Miller PS, Smart TG, Binding, activation and modulation of Cys-loop receptors (2010)](https://pubmed.ncbi.nlm.nih.gov/20004662/)
[Rudolph U, Mohler H, GABAergic subtypes: biological functions and therapeutic potential (2014)](https://pubmed.ncbi.nlm.nih.gov/24262630/)
[Olsen RW, Sieghart W, GABA A receptors: subtypes provide diversity of function and pharmacology (2009)](https://pubmed.ncbi.nlm.nih.gov/18760291/)
[Limon A, Reyes-Ruiz JM, Miledi R, GABA(A) receptor changes in Alzheimer's disease (2018)](https://pubmed.ncbi.nlm.nih.gov/29455482/)
[Zheng Y, Gan L, Chen C, Liu Q, Wang Y, GABA(A) receptor signaling in Alzheimer's disease: a potential therapeutic target (2021)](https://pubmed.ncbi.nlm.nih.gov/34393740/)
[Yung HW, Wyttenbach A, MacDonald JF, GABA receptors in Parkinson's disease (2018)](https://pubmed.ncbi.nlm.nih.gov/29178090/)
[Mazzone GL, Nistri A, GABAergic modulation of motor neuron excitability: implications for amyotrophic lateral sclerosis (2015)](https://pubmed.ncbi.nlm.nih.gov/24647690/)