Anti-BRN4 antibodies enable researchers to detect and measure the BRN4 antigen in biological samples. This target is a reported synonym of the POU3F4 gene, which encodes POU class 3 homeobox 4. This protein is known to function in brain development and the regulation of transcription, among other biological roles. The human version of BRN4 has a canonical amino acid length of 361 residues and a protein mass of 39.4 kilodaltons. It is reported to be localized in the nucleus of cells. BRN4 is a member of the POU transcription factor protein family.