Predicted to enable GTPase activator activity. Predicted to be involved in activation of GTPase activity and regulation of cell size. Predicted to act upstream of or within negative regulation of neuron projection development. Predicted to be located in several cellular components, including centrosome; cytosol; and nuclear membrane. Predicted to be active in cytoplasm and plasma membrane. Orthologous to human RAP1GAP2 (RAP1 GTPase activating protein 2). [provided by Alliance of Genome Resources, Apr 2022]