(center map)
(1) DP1*:E2F1:HDAC1:SWI/SNF:pRB*__pho@nucleus - CDK6_Thr_pho:cyclin D1*:p27Kip1*@nucleus - CDK4_Thr172_pho:cyclin D1*:p27Kip1*@nucleus - CDK4:cyclin D1*:p21Cip*@nucleus - CDK6:cyclin D1*:p21Cip*@nucleus -> HDAC1@nucleus+DP1*:E2F1:SWI/SNF:pRB*__pho__pho@nucleus
(2) DP1*:E2F1:SWI/SNF:pRB*__pho__pho@nucleus - CDK2_Thr160_pho:cyclin E1*@nucleus -?> DP1*:E2F1:pRB*__pho__pho__pho@nucleus+SWI/SNF__pho@nucleus