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