Enables transmitter-gated ion channel activity involved in regulation of postsynaptic membrane potential. Predicted to be involved in several processes, including chemical synaptic transmission; chloride transmembrane transport; and regulation of membrane potential. Predicted to act upstream of or within chloride transport. Located in axon; dendrite; and neuronal cell body. Is integral component of postsynaptic membrane. Is active in GABA-ergic synapse. Is expressed in several structures, including brain; metanephros; respiratory system; sensory organ; and ventricular layer. Used to study postpartum depression. 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]