Predicted to enable GDP binding activity; GTP binding activity; and GTPase activity. Involved in several processes, including cellular response to gonadotropin-releasing hormone; cellular response to xenobiotic stimulus; and response to carbohydrate. Predicted to be located in cell-cell junction; cytosol; and lipid droplet. Predicted to be active in plasma membrane. Orthologous to human RAP1B (RAP1B, member of RAS oncogene family). [provided by Alliance of Genome Resources, Apr 2022]