Regulates the organization of the actin cytoskeleton (PubMed:16537651, PubMed:18270267). With OSPBL3, modulates integrin beta-1 (ITGB1) activity (PubMed:18270267). GTP + H2O = GDP + H(+) + phosphate Interacts with PLCE1 (PubMed:16537651). Interacts (active GTP-bound form preferentially) with RGS14 (By similarity). Interacts with OSBPL3 (PubMed:18270267, PubMed:16537651, PubMed:20074548) (By similarity). Interacts with ZDHHC19 (PubMed:20074548). 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.