Cyclin D:Cdk4/6 mediated phosphorylation of p130 (RBL2) and dissociation of phosphorylated p130 (RBL2) from DP1:E2F4/5 complex At G1 entry from G0, p130 (RBL2) is phosphorylated on three threonine and serine residues by cyclin D1 dependent kinases CDK4 and/or CDK6, leading to dissociation of p130 (RBL2) from complexes it formed with E2F4 or E2F5 and DP1 or DP2. This is thought to promote translocation of E2F4 and E2F5, which lack nuclear localization signals, to the cytosol, allowing activating E2Fs (E2F1, E2F2 and E2F3) to bind E2F promoters and activate transcription of genes needed for G1 progression. Authored: Orlic-Milacic, Marija, 2011-06-14 EC Number: 2.7.11.22 Pubmed11157749 Pubmed9144196 Reactome Database ID Release 431226094 Reactome, http://www.reactome.org ReactomeREACT_111206 Reviewed: MacPherson, D, 2011-08-25 has a Stoichiometric coefficient of 3 E2F4/5:DP1/2 RBL2:E2F4/5:DP1/2