Anti-TMPRSS9 antibodies are used in the immunodetection of the protein transmembrane serine protease 9. In humans, the canonical protein has a reported length of 1059 amino acid residues and a mass of 114 kDa. Its subcellular localization is in the cell membrane. It is reported to be expressed in fetal human tissues, such as kidney, liver, lung and brain, and in a variety of tumor cell lines. A member of the Peptidase S1 protein family, TMPRSS9 is known to be involved with proteolysis. Post-translational modifications have been described, including protein cleavage and glycosylation. Synonyms for this target antigen include polyserase-1, polyserase-I, polyserine protease 1, transmembrane protease, serine 9, and transmembrane protease serine 9. TMPRSS9 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. These TMPRSS9 antibodies are widely used in Western Blot experiments, among other applications.