Anti-PR domain 4 antibodies are used in antigen-specific immunodetection in biological samples. The target PR domain 4 is a known alias name of the protein PR/SET domain 4, encoded by the PRDM4 gene in humans. This 801-amino acid residue protein is believed to function as a a transcription factor involved in cell differentiation. It is localized to the nucleus of the cell. In terms of tissue expression, it is reported to be expressed in many tissues.