Predicted to enable GDP-dissociation inhibitor activity. Predicted to contribute to GTPase activator activity. Acts upstream of or within positive regulation of mitotic centrosome separation and spindle organization. Located in centrosome and cytoplasm. Is expressed in several structures, including branchial arch; cardiovascular system; central nervous system; head mesenchyme; and sensory organ. Orthologous to human RANBP1 (RAN binding protein 1). [provided by Alliance of Genome Resources, Apr 2022]