Dephosphorylation of p107 by PP2A Authored: Orlic-Milacic, Marija, 2011-06-14 Dephosphorylation of p107 (RBL1) by PP2A Dephosphorylation of p107 (RBL1) by PP2A complex containing either PPP2R3B (B" beta) or PPP2R2A (B alpha) regulatory subunit plays a role in maintaining the equilibrium of hyperphosphorylated and hypophosphorylated p107 (RBL1), through counteracting action of cyclin dependent kinases (CDKs) throughout the cell cycle. It is assumed that PP2A dephosphorylates p107 (RBL1) on all four phosphorylation sites, but further experiments are needed to confirm this. EC Number: 3.1.3.16 Pubmed20663872 Reactome Database ID Release 431363274 Reactome, http://www.reactome.org ReactomeREACT_111148 Reviewed: Grana, X, 2011-06-15 has a Stoichiometric coefficient of 4