Predicted to enable phosphoprotein phosphatase activity and protein phosphatase activator activity. Acts upstream of or within positive regulation of protein dephosphorylation. Predicted to be part of protein phosphatase type 2A complex. Predicted to be active in cytosol and nucleus. Is expressed in several structures, including brain; ovary; and spleen. Human ortholog(s) of this gene implicated in autosomal dominant non-syndromic intellectual disability 35. Orthologous to human PPP2R5D (protein phosphatase 2 regulatory subunit B'delta). [provided by Alliance of Genome Resources, Apr 2022]