Gamma-aminobutyric acid type A receptor alpha 1 subunit (GABRA1)

The gamma-aminobutyric acid type A receptor alpha 1 subunit (GABRA1) is a key component of the GABA_A receptor, the primary inhibitory neurotransmitter receptor in the central nervous system. It is a ligand-gated chloride channel that, upon activation by GABA, allows chloride ions to flow into the neuron, resulting in hyperpolarization and reduced neuronal excitability. GABRA1 is widely expressed in the brain and plays a critical role in regulating neuronal activity, sleep, anxiety, and seizure susceptibility. Mutations in the *GABRA1* gene and dysregulation of GABRA1-containing GABA_A receptors are implicated in various neurological disorders, including epilepsy.

Other names

GABA-A receptor alpha 1 subunitGABA(A) receptor subunit alpha-1

Binding of GABA to the GABRA1 subunit within the GABA_A receptor complex leads to the opening of a chloride channel, resulting in increased chloride conductance, hyperpolarization of the neuron, and inhibition of neuronal firing. Allosteric modulators such as benzodiazepines and barbiturates enhance GABA's effect by increasing the frequency or duration of channel opening.