Enables GABA-A receptor activity. Involved in chemical synaptic transmission. Is active in GABA-ergic synapse and glutamatergic synapse. Is integral component of postsynaptic membrane. Human ortholog(s) of this gene implicated in idiopathic generalized epilepsy 10. Orthologous to human GABRD (gamma-aminobutyric acid type A receptor subunit delta). [provided by Alliance of Genome Resources, Apr 2022]