Anti-lipase I antibodies are used for the immunodetection of the protein encoded by the LIPI gene. In humans, the canonical protein has a reported length of 460 amino acid residues and a mass of 52.9 kDa. Its subcellular localization is in the cell membrane and is secreted. Alternative splicing is reported to yield 8 different isoforms for this protein. It is notably expressed in the testis. A member of the Lipase protein family, it is known to be involved with the metabolism of lipids. Post-translational modifications have been described, including glycosylation. Other names for this target antigen include LPD lipase, cancer/testis antigen 17, lipase, member I, membrane-associated phosphatidic acid-selective phospholipase A1-beta, and lipase member I. Gene orthologs have been identified in the mouse, rat, bovine, frog, chimpanzee and chicken species. Western Blot is a widely used application for the lipase I antibodies listed below. In addition, ELISA is also a common application.