(1) CHEK2@nucleus - ATM_Ser 1981_pho:NBS1__pho@nucleus -> CHEK2_Thr68_pho@nucleus (2) DP1*:E2F1_Lys_ace:PCAF@nucleus - CHEK2_Thr68_pho@nucleus - CHEK2@nucleus -> PCAF@nucleus+DP1*:E2F1_Lys_ace_Ser364_pho@nucleus