Anti-USF3 antibodies are used in the immunodetection of the protein upstream transcription factor family member 3. In humans, the canonical protein has a reported length of 2245 amino acid residues and a mass of 241.7 kDa. Its subcellular localization is in the nucleus. USF3 is reported to be involved in negative regulation of epithelial-mesenchymal transition, the process by which epithelial cells lose their polarity and adhesion properties to become mesenchymal cells with enhanced migration and invasive properties. Synonyms for this target antigen include basic helix-loop-helix domain-containing protein USF3. USF3 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Immunocytochemistry is the most common application for the USF3 antibodies listed below. Immunofluorescence and Immunohistochemistry are also common applications.