Anti-LNPK antibodies are used in the immunodetection of the protein lunapark, ER junction formation factor. In humans, the canonical protein has a reported length of 428 amino acid residues and a mass of 47.7 kDa. Its subcellular localization is in the ER. Up to 4 different isoforms have been reported for this protein. It is reported to be expressed in neural precursor cells, where it is detected at the growth-cone-like structure and branching sites of neurite-like processes. A member of the Lunapark protein family, LNPK is known to be involved with limb development and the regulation of cell differentiation. Synonyms for this target antigen include 2310011O18Rik, 4921514L11Rik, ER junction formation factor lunapark, limb and neural patterns, protein lunapark, and endoplasmic reticulum junction formation protein lunapark. LNPK gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. Some LNPK antibodies may have been used in research and have associated citations. Immunohistochemistry is a widely used application for these antibodies. In addition, Western Blot is also a common application.