Anti-protein inhibitor of activated STAT, 4 antibodies enable researchers to detect and measure the protein inhibitor of activated STAT, 4 antigen in biological samples. This target is a reported synonym of the PIAS4 gene, which encodes protein inhibitor of activated STAT 4. This protein is known to function in nervous system development and hair follicle development, among other biological roles. The human version of protein inhibitor of activated STAT, 4 has a canonical amino acid length of 510 residues and a protein mass of 56.5 kilodaltons. It is reported to be localized in the nucleus of cells and notably expressed in the testis. protein inhibitor of activated STAT, 4 is a member of the PIAS protein family.