Anti-PCSK1N antibodies are used in the immunodetection of the protein proprotein convertase subtilisin/kexin type 1 inhibitor. In humans, the canonical protein has a reported length of 260 amino acid residues and a mass of 27.4 kDa. Its subcellular localization is in the Golgi and is secreted. It is reported to be expressed in the brain and pancreas. PCSK1N is believed to function in the control of the neuroendocrine secretory pathway. Post-translational modifications have been described, including O-glycosylation and protein cleavage. Synonyms for this target antigen include PEN, PROSAAS, SAAS, SCG8, SgVIII, granin-like neuroendocrine peptide, pro-SAAS, and BigLEN. PCSK1N gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. Immunofluorescence is the most common application for the PCSK1N antibodies listed below. ELISA, Western Blot, and Immunohistochemistry are also common applications.