Predicted to enable GTPase activator activity and metal ion binding activity. Involved in presynaptic modulation of chemical synaptic transmission and regulation of synaptic vesicle exocytosis. Acts upstream of or within behavioral response to pain. Is active in calyx of Held. Is expressed in genitourinary system. Orthologous to human GIT2 (GIT ArfGAP 2). [provided by Alliance of Genome Resources, Apr 2022]