Predicted to enable G protein-coupled serotonin receptor binding activity; G-protein beta/gamma-subunit complex binding activity; and GTPase activity. Acts upstream of or within G protein-coupled serotonin receptor signaling pathway. Located in cell body and dendrite. Is expressed in brain; early conceptus; early tubule; ganglia; and gonad. Orthologous to human GNAZ (G protein subunit alpha z). [provided by Alliance of Genome Resources, Apr 2022]