A protein complex that contains MAPKSP1 (MP1, Map2k1ip1), ROBLD3 (p14, Mapbpip), and C11orf59 (p18). The complex is anchored to lipid rafts in late endosome membranes via C11orf59, recruits mTORC1 to lysosomal membranes in amino acid signaling to mTORC1, and is also involved in ERK/MAPK signaling.