Anti-KCNE5 antibodies are used in the immunodetection of the protein potassium voltage-gated channel subfamily E regulatory subunit 5. In humans, the canonical protein has a reported length of 142 amino acid residues and a mass of 15 kDa. Its subcellular localization is in the membrane. It is reported to be highly expressed in heart, skeletal muscle, brain, spinal cord and placenta. A member of the Potassium channel KCNE protein family, it is known to be involved with muscle contraction. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include potassium voltage-gated channel subfamily E regulatory beta subunit 5, AMME syndrome candidate gene 2 protein, AMMECR2 protein, KCNE1-like, and KCNE1L.