Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it. Their voltage dependence is regulated by the concentration of extracellular potassium; as external potassium is raised, the voltage range of the channel opening shifts to more positive voltages. . This is the function of KCNJ14 (potassium inwardly rectifying channel subfamily J member 14, Ensembl gene identifier ENSG00000182324).