Anti-serine protease 23 antibodies are used for the immunodetection of the protein encoded by the PRSS23 gene. In humans, the canonical protein has a reported length of 383 amino acid residues and a mass of 43 kDa. It is known to be a secreted protein. Alternative splicing is reported to yield 2 different isoforms for this protein. A member of the Peptidase S1 protein family, it is known to be involved with proteolysis. Post-translational modifications have been described, including glycosylation. Other names for this target antigen include SPUVE, ZSIG13, protease, serine 23, putative secreted protein Zsig13, serine protease, umbilical endothelium, and SIG13. Gene orthologs have been identified in the mouse, rat, bovine, frog, chimpanzee and chicken species. Some serine protease 23 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, Immunohistochemistry is also a common application.