PP2AB1 At1g51690 The B regulatory subunit may modulate substrate selectivity and catalytic activity, and also may direct the localization of the catalytic enzyme to a particular subcellular compartment (By similarity). MNGGDEVVAASADPSLPLEWRFSQVFGERSAGEEVQEVDIISAIEFDNSGNHLATGDRGGRVVLFERTDTNNSSGTRRELEEADYPLRHPEFRYKTEFQSHDPEFDYLKSLEIEEKINKIRWCQTANGALFLLSTNDKTIKFWKVQDKKIKKICDMNSDPSRTVGNGTVASSSNSNITNSCLVNGGVSEVNNSLCNDFSLPAGGISSLRLPVVVTSHESSPVARCRRVYAHAHDYHINSISNNSDGETFISADDLRINLWNLEISNQSFNIVDVKPAKMEDLSEVITSAEFHPTHCNMLAYSSSKGSIRLIDLRQSALCDSHSKLFEEPEQAGPKSFFTEIIASVSDIKFAKEGRYLLSRDYMTLKLWDINMDAGPVATFQVHEYLKPKLCDLYENDSIFDKFECCISGNGLRAATGSYSNLFRVFGVAPGSTETATLEASRNPMRRHVPIPSRPSRALSSITRVVSRGSESPGVDGNTNALDYTTKLLHLAWHPNENSIACAAANSLYMYYA 513 F19C24.10 Serine/threonine protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform 2ABA_ARATH