Anti-SEPHS1 antibodies are used in the immunodetection of the protein selenophosphate synthetase 1. In humans, the canonical protein has a reported length of 392 amino acid residues and a mass of 42.9 kDa. Its subcellular localization is in the cell membrane, nucleus, and cytoplasm. Up to 4 different isoforms have been reported for this protein. It is notably widely expressed in many tissue types. A member of the Selenophosphate synthase 1 protein family, SEPHS1 is known to be involved with protein phosphorylation. Synonyms for this target antigen include SPS, SPS1, selenide, water dikinase 1, selenium donor protein 1, selenophosphate synthase 1, and SELD. SEPHS1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some Sephs1 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. Immunofluorescence and Immunohistochemistry are also common applications.