Akker, E. van den

kinase phosphorylation protein gab 1 tyrosine activation inhibitor erythroid epo-induced receptor differentiation figure erythroblast gab 2 jak 2 activity factor domain blood control pi 3k binding phosphorylated antibody presence erythroid progenitors sh 2 domains result panel proliferation cos cells pkc inhibitors lysate number tyrosine phosphorylation progenitors erythroid cells 293 cells association interaction minute effect pi 3-k expression culture medium pathway ha-dok expansion trka-ron renewal c-kit target family pi 3k activity /ml 10 minutes ly 294002 inhibition hemoglobin pkc ␣ volume addition signal absence study gab 2 phosphorylation epo-induced phosphorylation immunoprecipitate phosphorylate -1. ag 490 progenitor molecule erasmus mc antiphosphotyrosine condition j biol chem transfected november 109203x