Protein Phosphatase 2, Regulatory Subunit B' Delta (PPP2R5d)

PPP2R5d belongs to the phosphatase 2A regulatory subunit B family. Protein phosphatase 2A is one of the four major Ser/Thr phosphatases, and it is implicated in the negative control of cell growth and division. It consists of a common heteromeric core enzyme, which is composed of a catalytic subunit and a constant regulatory subunit, that associates with a variety of regulatory subunits. The B regulatory subunit might modulate substrate selectivity and catalytic activity. This gene encodes a delta isoform of the regulatory subunit B56 subfamily. Alternatively spliced transcript variants encoding different isoforms have been identified.B56-delta encoded a 602-amino acid protein with a predicted molecular mass of 69,947 Da. This subunit is able to form a functional trimeric PP2A phosphatase when combined with an A and a C subunit.