(center map)
(1) DP2*:E2F4@nucleus+p107*@nucleus -> DP2*:E2F4:p107*@nucleus
(2) p107*@nucleus+CDK2:cyclin A2*@nucleus -> CDK2:cyclin A2*:p107*@nucleus
(3) CDK2_Thr160_pho:cyclin E1*@nucleus+p107*@nucleus -> CDK2_Thr160_pho:cyclin E1*:p107*@nucleus