NGF + TrkA <-> NGF_TrkA
Akt + pTrkA <-> pTrkA_Akt
pTrkA_Akt -> pAkt + pTrkA
pTrkA -> 0
S6 + pAkt <-> pAkt_S6
pAkt_S6 -> pAkt + pS6
pAkt -> Akt
pS6 -> S6
pro_TrkA -> TrkA
NGF_TrkA -> pTrkA
TrkA -> 0