Enables GTPase activity and zinc chaperone activity. Involved in intracellular zinc ion homeostasis. Predicted to be located in nucleus. Predicted to be active in cytoplasm. Orthologous to several human genes including ZNG1C (Zn regulated GTPase metalloprotein activator 1C); ZNG1E (Zn regulated GTPase metalloprotein activator 1E); and ZNG1F (Zn regulated GTPase metalloprotein activator 1F).