(center map)
(1) CASP9|S196_unk|S144_unk|Y153_unk - ERK* - CCNB1:CDK1 - DYRK1A - p38*|T180_pho|Y182_pho -> CASP9|S196_unk|T125_pho|S144_unk|Y153_unk
(2) CASP9|S196_unk|T125_pho|S144_unk|Y153_unk - PPP1CA - -> CASP9|S196_unk|S144_unk|Y153_unk
(3) CASP9 -> CASP9|S196_unk|S144_unk|Y153_unk