Predicted to enable GTPase activator activity. Predicted to be involved in Rho protein signal transduction; regulation of axonogenesis; and regulation of cell size. Predicted to act upstream of or within signal transduction. Predicted to be located in several cellular components, including cytoskeleton; nucleus; and plasma membrane. Predicted to be active in cytosol. Orthologous to human ARHGAP35 (Rho GTPase activating protein 35).