Predicted to enable GTPase activator activity and magnesium ion binding activity. Predicted to be involved in post-Golgi vesicle-mediated transport. Predicted to be located in several cellular components, including Golgi apparatus; microtubule organizing center; and nuclear body. Predicted to be active in cilium and periciliary membrane compartment. Human ortholog(s) of this gene implicated in retinitis pigmentosa and retinitis pigmentosa 2. Orthologous to human RP2 (RP2 activator of ARL3 GTPase). [provided by Alliance of Genome Resources, Apr 2022]