Anti-PPWD1 antibodies are used in the immunodetection of the protein peptidylprolyl isomerase domain and WD repeat containing 1. In humans, the canonical protein has a reported length of 646 amino acid residues and a mass of 73.6 kDa. Its subcellular localization is in the nucleus. Up to 2 different isoforms have been reported for this protein. It is notably widely expressed in many tissue types. A member of the Cyclophilin-type PPIase protein family, PPWD1 is a reported PPIase that catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides and may therefore assist protein folding. Synonyms for this target antigen include epididymis secretory sperm binding protein, spliceosome-associated cyclophilin, and peptidylprolyl isomerase domain and WD repeat-containing protein 1. PPWD1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some PPWD1 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. Flow Cytometry, Immunocytochemistry, Immunofluorescence, and Immunohistochemistry are also common applications.