0 -> Cyclin_D Cyclin_D -> 0 Cdk4 + Cyclin_D -> Cyclin_D_Cdk4 Cyclin_D_Cdk4 -> Cdk4 + Cyclin_D 0 -> Cyclin_E Cyclin_E -> 0 Cdk2 + Cyclin_E -> Cyclin_E_Cdk2_inactive_phosphorylated Cyclin_E_Cdk2_inactive_phosphorylated -> Cdk2 + Cyclin_E 0 -> Cyclin_A Cyclin_A -> 0 Cdk2 + Cyclin_A -> Cyclin_A_Cdk2_inactive Cyclin_A_Cdk2_inactive -> Cdk2 + Cyclin_A Cyclin_D_Cdk4 -> Cdk4 Cyclin_A_Cdk2_active -> Cdk2 Cyclin_A_Cdk2_inactive -> Cdk2 Cyclin_E_Cdk2_inactive_phosphorylated -> Cdk2 Cyclin_E_Cdk2_active_unphosphorylated -> Cdk2 Cyclin_D_Cdk4 + p21 -> p21_CyclinD_Cdk4 p21_CyclinD_Cdk4 -> Cyclin_D_Cdk4 + p21 Cyclin_D_Cdk4 + p27 -> p27_CyclinD_Cdk4 p27_CyclinD_Cdk4 -> Cyclin_D_Cdk4 + p27 Cyclin_E_Cdk2_inactive_phosphorylated -> Cyclin_E_Cdk2_active_unphosphorylated Cyclin_E_Cdk2_active_unphosphorylated -> Cyclin_E_Cdk2_inactive_phosphorylated Cyclin_E_Cdk2_active_unphosphorylated + p27 -> p27_CyclinE_Cdk2 p27_CyclinE_Cdk2 -> Cyclin_E_Cdk2_active_unphosphorylated + p27 Cyclin_E_Cdk2_active_unphosphorylated + p21 -> p21_CyclinE_Cdk2 p21_CyclinE_Cdk2 -> Cyclin_E_Cdk2_active_unphosphorylated + p21 Cyclin_A_Cdk2_inactive -> Cyclin_A_Cdk2_active Cyclin_A_Cdk2_active -> Cyclin_A_Cdk2_inactive Cyclin_A_Cdk2_active + p27 -> p27_CyclinA_Cdk2 p27_CyclinA_Cdk2 -> Cyclin_A_Cdk2_active + p27 Cyclin_A_Cdk2_active + p21 -> p21_CyclinA_Cdk2 p21_CyclinA_Cdk2 -> Cyclin_A_Cdk2_active + p21 0 -> p27 p27 -> 0 p27 -> 0 0 -> p21 0 -> p21 p21 -> 0 0 -> p16 0 -> p16 p16 -> 0 Cyclin_D_Cdk4 + p16 -> 0 E2F + Rb -> Rb_E2F Rb_E2F -> Rb_PP_E2F Rb_E2F -> Rb_PP_E2F Rb_E2F -> Rb_PP_E2F Rb_PP_E2F -> E2F + Rb_PPP Rb_PP_E2F -> E2F + Rb_PPP 0 -> E2F 0 -> E2F E2F -> 0 E2F -> 0 Rb_PPP -> Rb 0 -> Rb Rb -> 0 0 -> Rb 0 -> p53 0 -> p53 p53 -> 0 0 -> Mdm2 Mdm2 -> 0 0 -> Mdm2 Intermediate -> 0 0 -> Intermediate 0 -> Cyclin_A 0 -> ATM_ATR ATM_ATR -> 0 0 -> Cdc25A_inactive Cdc25A_inactive -> 0 Cdc25A_inactive -> Cdc25A_active Cdc25A_inactive -> 0 Cdc25A_active -> 0 Cdc25A_active -> Cdc25A_inactive Cdc25A_active -> 0 Chk1_active -> Chk1_inactive Chk1_inactive -> Chk1_active 0 -> NF_Y NF_Y -> 0 0 -> Cyclin_B Cyclin_B -> 0 Cdk1 + Cyclin_B -> Cyclin_B_Cdk1_inactive_unphosphorylated_cytoplasm Cyclin_B_Cdk1_inactive_unphosphorylated_cytoplasm -> Cdk1 + Cyclin_B Cyclin_B_Cdk1_inactive_unphosphorylated_cytoplasm -> Cyclin_B_Cdk1_active_phosphorylated_cytoplasm Cyclin_B_Cdk1_active_phosphorylated_cytoplasm -> Cyclin_B_Cdk1_inactive_unphosphorylated_cytoplasm Cyclin_B_Cdk1_inactive_unphosphorylated_cytoplasm -> Cdk1 Cyclin_B_Cdk1_active_phosphorylated_cytoplasm -> Cdk1 0 -> Wee1 Wee1 -> Wee1_phosphorylated Wee1_phosphorylated -> Wee1 Wee1_phosphorylated -> 0 Cyclin_B_Cdk1_nuclear + p21 -> p21_CyclinB_Cdk1 p21_CyclinB_Cdk1 -> Cyclin_B_Cdk1_nuclear + p21 0 -> B_Myb_inactive B_Myb_inactive -> B_Myb_active B_Myb_active -> 0 0 -> Cdc25C_inactive Cdc25C_active -> Cdc25C_inactive Cdc25C_inactive -> Cdc25C_active Cdc25C_inactive -> Cdc25C_Ps216_phosphorylated_inactive Cdc25C_Ps216_phosphorylated_active -> Cdc25C_active Cdc25C_active -> Cdc25C_Ps216_phosphorylated_active Cdc25C_active -> 0 Cdc25C_Ps216_phosphorylated_active -> Cdc25C_Ps216_phosphorylated_inactive Cdc25C_Ps216_phosphorylated_inactive -> Cdc25C_Ps216_phosphorylated_active 0 -> _14_3_3_sigma 0 -> _14_3_3_sigma _14_3_3_sigma -> 0 Cdc25C_Ps216_phosphorylated_inactive + _14_3_3_sigma -> _14_3_3_sigma_iCdc25C_PS216_phosphorylated _14_3_3_sigma_iCdc25C_PS216_phosphorylated -> 0 APC_Ccdc20_active -> APC_Ccdc20_inactive APC_Ccdc20_inactive -> APC_Ccdc20_active APC_Ccdh1_active -> APC_Ccdh1_inactive APC_Ccdh1_inactive -> APC_Ccdh1_active Cyclin_A -> 0 Cyclin_A -> 0 Cyclin_B -> 0 Cyclin_B -> 0 0 -> Cyclin_A Cyclin_B_Cdk1_active_phosphorylated_cytoplasm -> Cyclin_B_Cdk1_nuclear Cyclin_B_Cdk1_nuclear -> Cyclin_B_Cdk1_active_phosphorylated_cytoplasm Cyclin_B_Cdk1_nuclear -> Cyclin_B_Cdk1_nuclear_inactive Cyclin_B_Cdk1_nuclear_inactive -> Cyclin_B_Cdk1_nuclear Cyclin_B_Cdk1_nuclear -> 0 Cyclin_B_Cdk1_nuclear_inactive -> 0 Cyclin_B_Cdk1_nuclear -> 0 p53 -> 0