Anti-POU1F1a antibodies enable researchers to detect and measure the POU1F1a antigen in biological samples. This target is a reported synonym of the POU1F1 gene, which encodes POU class 1 homeobox 1. This protein is known to function in the regulation of cell proliferation and the regulation of transcription, among other biological roles. The human version of POU1F1a has a canonical amino acid length of 291 residues and a protein mass of 32.9 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the nucleus of cells and notably expressed in the pituitary gland. Other names for this target antigen include CPHD1, GHF-1, and PIT1.