Anti-SMU1 antibodies are used in the immunodetection of the protein SMU1 DNA replication regulator and spliceosomal factor. In humans, the canonical protein has a reported length of 513 amino acid residues and a mass of 57.5 kDa. Its subcellular localization is in the nucleus and cytoplasm. Up to 2 different isoforms have been reported for this protein. It is notably widely expressed in many tissue types. A member of the WD repeat SMU1 protein family, SMU1 is known to be involved in pre-mRNA splicing as a component of the spliceosome. Synonyms for this target antigen include fSAP57, WD40 repeat-containing protein SMU1, DNA replication regulator and spliceosomal factor, brain-enriched WD-repeat protein, and BWD. SMU1 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. Some SMU1 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, Immunofluorescence is also a common application.