The function of CPPED1 (calcineurin like phosphoesterase domain containing 1, Ensembl gene identifier ENSG00000103381) is as follows. Protein phosphatase that dephosphorylates AKT family kinase specifically at 'Ser-473', blocking cell cycle progression and promoting cell apoptosis. May play an inhibitory role in glucose uptake by adipocytes. {ECO:0000269|PubMed:23799035, ECO:0000269|PubMed:23939394}.