Predicted to enable GTPase activator activity. Acts upstream of or within regulation of endocytosis. Located in postsynaptic density. Is expressed in axial skeleton; craniocervical region bone; inner ear; and lower jaw mesenchyme. Orthologous to human ARFGAP1 (ADP ribosylation factor GTPase activating protein 1). [provided by Alliance of Genome Resources, Apr 2022]