Anti-Gastrokine 1 antibodies are used for the immunodetection of the protein encoded by the GKN1 gene. In humans, the canonical protein has a reported length of 185 amino acid residues and a mass of 20.3 kDa. Its subcellular localization is in the Golgi, cytoplasm, and is secreted. It is notably expressed in the stomach. A member of the Gastrokine protein family, it is known to have mitogenic activity and may be involved in maintaining the integrity of the gastric mucosal epithelium. Other names for this target antigen include 18 kDa antrum mucosa protein and BRICHOS domain containing 1. Gene orthologs have been identified in the mouse, rat, bovine and chicken species. A number of Gastrokine 1 antibodies have been mentioned in research publications and have associated citations. ELISA is a widely used application for these antibodies. Western Blot and Immunohistochemistry are also common applications.