x1 = IRS
x2 = aIRS
x3 = iIRS
x4 = PI3K
x5 = aPI3K
x6 = Akt
x7 = aAkt
x8 = mTORC1
x9 = amTORC1
x10 = S6K
x11 = aS6K
x12 = FOXO
x13 = iFOXO
x14 = RTK
x15 = aRTK
x16 = iRTK
x17 = RasGDP
x18 = RasGTP
x19 = Raf
x20 = aRaf
x21 = iRaf
x22 = MEK
x23 = aMEK
x24 = ERK
x25 = aERK
x26 = AktI
x27 = iAkt
x28 = MEKI
x29 = iMEK