Anti-KCNE4 antibodies are used in the immunodetection of the protein potassium voltage-gated channel subfamily E regulatory subunit 4. In humans, the canonical protein has a reported length of 221 amino acid residues and a mass of 23.8 kDa. Its subcellular localization is in the membrane. It is reported to be highly expressed in the embryo and adult uterus. A member of the Potassium channel KCNE protein family, KCNE4 is reported to be an ancillary protein that assembles as a beta subunit with a voltage-gated potassium channel complex of pore-forming alpha subunits. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include potassium voltage-gated channel subfamily E member 4, MINK-related peptide 3, cardiac voltage-gated potassium channel accessory subunit 4, and MIRP3. KCNE4 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some KCNE4 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.