Small GTP-binding protein which cycles between a GDP-bound inactive and a GTP-bound active form. May play a role in cytoskeletal rearrangements and regulate cell spreading through activation of the effector TNIK. May play a role in SRE-mediated gene transcription (By similarity). GTP + H2O = GDP + H(+) + phosphate Palmitoylated. Palmitoylation is required for association with recycling endosome membranes and activation of TNIK. Belongs to the small GTPase superfamily. Ras family.