. "Reviewed: Gotoh, N, 2011-08-26"^^ . "Authored: Rothfels, K, 2011-08-15"^^ . "SOS, recruited by GRB2:p-FRS2 to activated FGFR, activates RAS nucleotide exchange from the inactive GDP-bound to the active GTP-bound state."^^ . . . . . . "Ras nucleotide exchange by GRB2:SOS1 bound to p-FRS2:activated FGFR"^^ . . . . .