Predicted to enable SUMO ligase activity and small GTPase binding activity. Predicted to contribute to GTPase activator activity. Involved in response to amphetamine. Located in cytoplasmic periphery of the nuclear pore complex. Part of nuclear pore cytoplasmic filaments. Human ortholog(s) of this gene implicated in brain disease and inflammatory myofibroblastic tumor. Orthologous to human RANBP2 (RAN binding protein 2). [provided by Alliance of Genome Resources, Apr 2022]