Anti-FOXA1 antibodies are used in the immunodetection of the protein forkhead box A1. In humans, the canonical protein has a reported length of 472 amino acid residues and a mass of 49.1 kDa. Its subcellular localization is in the nucleus. Up to 2 different isoforms have been reported for this protein. It is reported to be highly expressed in prostate and ESR1-positive breast tumors. FOXA1 is reported to be a transcription factor that is involved in embryonic development, establishment of tissue-specific gene expression and regulation of gene expression in differentiated tissues. Synonyms for this target antigen include TCF3A, hepatocyte nuclear factor 3-alpha, HNF-3-alpha, HNF-3A, TCF-3A, and HNF3A. FOXA1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Over 100 citations in the literature describe the use of FOXA1 antibodies in research. Western Blot is a widely used application for these antibodies. Flow Cytometry, Immunocytochemistry, Immunofluorescence, and Immunohistochemistry are also common applications.