Serve as an important signal transducer for a novel upstream stimuli in controlling cell proliferation. Activates the MAP kinase pathway (By similarity). GTP + H2O = GDP + H(+) + phosphate Forms a multiprotein complex with SHOC2, Raf (RAF1) and protein phosphatase 1 (PPP1CA, PPP1CB and PPP1CC). Interacts with RGL3 (By similarity). Interacts (active GTP-bound form preferentially) with RGS14. Expressed in skeletal muscle cells. Belongs to the small GTPase superfamily. Ras family.