Phospho-NFAT4 (Ser165) Antibody detects endogenous levels of NFAT4 only when phosphorylated at Serine 165. The product of this gene is a member of the nuclear factors of activated T cells DNA-binding transcription complex. This complex consists of at least two components: a preexisting cytosolic component that translocates to the nucleus upon T cell receptor (TCR) stimulation and an inducible nuclear component.