Predicted to enable GTPase binding activity. Predicted to contribute to guanyl-nucleotide exchange factor activity and molecular adaptor activity. Predicted to be involved in several processes, including cholesterol homeostasis; positive regulation of intracellular signal transduction; and regulation of cholesterol transport. Located in late endosome membrane and membrane raft. Orthologous to human LAMTOR1 (late endosomal/lysosomal adaptor, MAPK and MTOR activator 1). [provided by Alliance of Genome Resources, Apr 2022]