Predicted to enable GTPase activity. Predicted to be involved in cytoskeleton organization and positive regulation of protein targeting to mitochondrion. Predicted to act upstream of or within several processes, including G1/S transition of mitotic cell cycle; Rac protein signal transduction; and regulation of cell shape. Orthologous to human RHOU (ras homolog family member U). [provided by Alliance of Genome Resources, Apr 2022]