Anti-SCAF4 antibodies are used in the immunodetection of the protein SR-related CTD associated factor 4. In humans, the canonical protein has a reported length of 1147 amino acid residues and a mass of 125.9 kDa. Its subcellular localization is in the nucleus. Up to 3 different isoforms have been reported for this protein. It is notably widely expressed in many tissue types. SCAF4 is known to be an anti-terminator protein required to prevent early mRNA termination during transcription. Synonyms for this target antigen include CTD-binding SR-like protein rA4, SR-like CTD-associated factor 4, pre-mRNA splicing SR protein rA4, splicing factor serine alanine 15, and SR-related and CTD-associated factor 4. SCAF4 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some SCAF4 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunocytochemistry, and Immunohistochemistry are also common applications.