M + MAPKK <-> M_MAPKK
M_MAPKK -> MAPKK + Mp
MAPKK + Mp <-> Mp_MAPKK
Mp_MAPKK -> MAPKK + Mpp
MKP3 + Mpp <-> Mpp_MKP3
Mpp_MKP3 -> Mp_MKP3_dep
Mp_MKP3_dep <-> MKP3 + Mp
MKP3 + Mp <-> Mp_MKP3
Mp_MKP3 -> M_MKP3
M_MKP3 <-> M + MKP3