Regulates the organization of the actin cytoskeleton. With OSPBL3, modulates integrin beta-1 (ITGB1) activity. GTP + H2O = GDP + H(+) + phosphate Interacts with PLCE1 (By similarity). Interacts (active GTP-bound form preferentially) with RGS14 (By similarity). Interacts with OSBPL3 (By similarity). Interacts with ZDHHC19 (By similarity). Inner surface of plasma membrane possibly with attachment requiring acylation of the C-terminal cysteine (By similarity with RAS). S-palmitoylated by ZDHHC19, leading to increased association with membranes and with rafts/caveolae as well as enhanced cell viability. Belongs to the small GTPase superfamily. Ras family.