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Official Full Name: protein phosphatase 2 regulatory subunit B'alpha<br />Also known as: B56A; PR61A; B56alpha<br />The product of this gene belongs to the phosphatase 2A regulatory subunit B family. Protein phosphatase 2A is one of four major serine/threonine phosphatases involved in the negative control of cell growth and division. It consists of a common heteromeric core enzyme consisting of a catalytic subunit and a constant regulatory subunit in association with multiple regulatory subunits. The B regulatory subunit likely modulates substrate selectivity and catalytic activity. This gene encodes the alpha isoform of the B56 subfamily of regulatory subunits. Alternative transcript variants encoding different isoforms of this gene have been found.