Involved in the regulation of calcium ion homeostasis. Binds to the calcineurin-dependent response element. Transcriptionally regulates PMC1, PMR1, PMR2A and FKS2. Phosphorylated. Dephosphorylated by calcineurin which leads to rapid translocation from the cytoplasm to the nucleus. Phosphorylated by the cyclin-CDK PHO80-PHO85. Present with 1160 molecules/cell in log phase SD medium.