Anti-PHAPI antibodies enable researchers to detect and measure the PHAPI antigen in biological samples. This target is a reported synonym of the ANP32A gene, which encodes acidic nuclear phosphoprotein 32 family member A. This protein is known to function in intracellular signal transduction and the regulation of apoptosis, among other biological roles. The human version of PHAPI has a canonical amino acid length of 249 residues and a protein mass of 28.6 kilodaltons. It is reported to be localized in the nucleus, ER, and cytoplasm of cells and widely expressed in many tissue types. Other names for this target antigen include C15orf1, HPPCn, and I1PP2A. Some PHAPI antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunofluorescence, and Immunohistochemistry are also common applications.