Anti-PPP2R2A antibodies are used in the immunodetection of the protein protein phosphatase 2 regulatory subunit Balpha. In humans, the canonical protein has a reported length of 447 amino acid residues and a mass of 51.7 kDa. Alternative splicing is reported to yield 2 different isoforms for this protein. It is reported to be expressed in all tissues examined. A member of the Phosphatase 2A regulatory subunit B protein family, it is known to be involved with protein dephosphorylation. Synonyms for this target antigen include B55ALPHA, PR52A, PR55A, PR55alpha, serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform, and B55A.