GO:0071986:   Ragulator complex
A eukaryotically conserved protein complex; in humans, it is comprised of LAMTOR1, LAMTOR2, LAMTOR3, LAMTOR4, and LAMTOR5. The complex is anchored to lipid rafts in late endosome membranes via LAMTOR1, constitutes a guanine nucleotide exchange factor (GEF) for the Rag GTPases.