sequence of PP2A P2R3A_HUMAN IMR:0700638 PP2A subunit B isoform PR72/PR130 PP2A subunit B isoform R3 isoform PP2A subunit B isoforms B''-PR72/PR130 PP2A subunit B isoforms B72/B130 PPP2R3 PPP2R3A PR130 PR72 PROTEIN PHOSPHATASE 2, REGULATORY SUBUNIT B-DOUBLE PRIME, ALPHA Serine/threonine-protein phosphatase 2A 72/130 kDa regulatory subunit B Serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit alpha UniProt:Q06190 molecule_role protein phosphatase 2, regulatory subunit B'', alpha