Anti-IRK4 antibodies are protein reagents that detect specific antigens. The IRK4 antigen is another term for the human protein potassium inwardly rectifying channel subfamily J member 14, encoded by the KCNJ14 gene. The protein is known to function in the transport of ions, among other biological roles. Canonically, it has an amino acid length of 436 residues and a mass of 47.8 kilodaltons. Its subcellular localization is in the membrane and it is noted to be expressed preferentially in retina. The IRK4 protein is a member of the Inward rectifier-type potassium channel (TC 1.A.2.1) protein family.