Anti-ELAPOR1 antibodies are used in the immunodetection of the protein endosome-lysosome associated apoptosis and autophagy regulator 1. In humans, the canonical protein has a reported length of 1013 amino acid residues and a mass of 111.4 kDa. Its subcellular localization is in the ER, Golgi, lysosomes, and cell membrane. Up to 4 different isoforms have been reported for this protein. It is reported to be expressed in normal endometrium but overexpressed in endometroid tumors. A member of the ELAPOR protein family, ELAPOR1 is believed to protect cells from cell death by inducing cytosolic vacuolization and up-regulating the autophagy pathway. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include estrogen-induced gene 121 protein and maba1. ELAPOR1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.