Anti-FBF1 antibodies are used in the immunodetection of the protein Fas binding factor 1. In humans, the canonical protein has a reported length of 1133 amino acid residues and a mass of 125.4 kDa. Its subcellular localization is in the cytoplasm. Up to 6 different isoforms have been reported for this protein. FBF1 is known to be a keratin-binding protein required for epithelial cell polarization. Synonyms for this target antigen include Fas binding protein 1, albatross, protein albatross, and Fas (TNFRSF6) binding factor 1. FBF1 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. Over 70 citations in the literature describe the use of FBF1 antibodies in research. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.