x1 = E3
x2 = PI3K_LY
x3 = E3H
x4 = E2
x5 = E23H
x6 = E23HP
x7 = Shc
x8 = E23HP_Shc
x9 = E23HP_ShcP
x10 = GS
x11 = E23HP_ShGS
x12 = E2_Per
x13 = PTEN_bpV
x14 = RasGDP
x15 = PI3Ka_PIP3
x16 = Raf
x17 = E23H_C
x18 = MEK
x19 = MEKP
x20 = PP2A
x21 = MEKP_PP2A
x22 = MEK_PP2A
x23 = Akt_PIP3_PP2A
x24 = MEKPP_PP2A
x25 = ERK
x26 = ERKP
x27 = E3H_C
x28 = PI3K
x29 = E23HP_PI3K
x30 = Akt_PIP3
x31 = PI3Ka
x32 = PI2
x33 = Akt_PI_P_PP2A
x34 = PTEN
x35 = PIP3
x36 = PTEN_PIP3
x37 = PTEN_PI
x38 = PTENP
x39 = PTENP_PTEN
x40 = Akt_PI_P
x41 = Akt
x42 = E23HP_PI3Ka
x43 = PTEN_PTEN
x44 = PI3Ka_PI
x45 = MEKPP
x46 = Akt_PI_PP
x47 = Akt_PI_PP_PP2A
x48 = Per
x49 = ShGS
x50 = E2Per
x51 = ERKPP
x52 = Rafa
x53 = RasGTP
x54 = ShcP
x55 = HRG