The function of PPM1F (protein phosphatase, Mg2+/Mn2+ dependent 1F, Ensembl gene identifier ENSG00000100034) is as follows. Dephosphorylates and concomitantly deactivates CaM-kinase II activated upon autophosphorylation, and CaM-kinases IV and I activated upon phosphorylation by CaM-kinase kinase. Promotes apoptosis.