Anti-TMEM9 antibodies are used in the immunodetection of the protein transmembrane protein 9. In humans, the canonical protein has a reported length of 183 amino acid residues and a mass of 20.6 kDa. Its subcellular localization is in the lysosomes. It is reported to be highly expressed in adrenal gland, thyroid gland, testis, ovary and prostate. A member of the TMEM9 protein family, TMEM9 is reported to be a transmembrane protein that binds to and facilitates the assembly of lysosomal proton-transporting V-type ATPase (v-ATPase), resulting in enhanced lysosomal acidification and trafficking. Post-translational modifications have been described, including N-glycosylation. Synonyms for this target antigen include dermal papilla-derived protein 4, v-ATPase assembly regulator TMEM9, and proton-transporting V-type ATPase complex assembly regulator TMEM9. TMEM9 gene orthologs have been reported in the mouse, rat, bovine, zebrafish, chimpanzee and chicken species. ELISA is the most common application for the TMEM9 antibodies listed below. Western Blot and Immunohistochemistry are also common applications.