Anti-Kir1.4 antibodies are protein reagents that detect specific antigens. The Kir1.4 antigen is another term for the human protein potassium inwardly rectifying channel subfamily J member 13, encoded by the KCNJ13 gene. The protein is known to function in the transport of ions, among other biological roles. Canonically, it has an amino acid length of 360 residues and a mass of 40.5 kilodaltons. Its subcellular localization is in the membrane and it is reported to be highly expressed in the small intestine. The Kir1.4 protein is a member of the Inward rectifier-type potassium channel (TC 1.A.2.1) protein family. Other alias names for Kir1.4 include KIR7.1 and LCA16.