function:May be responsible for potassium buffering action of glial cells in the brain. 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. The inward rectification is mainly due to the blockage of outward current by internal magnesium. Can be blocked by extracellular barium and cesium.,similarity:Belongs to the inward rectifier-type potassium channel family.,subunit:Seems to form heterodimer with Kir5.1/KCNJ16. Interacts with INADL.,
Membrane ; Multi-pass membrane protein. Basolateral cell membrane . In kidney distal convoluted tubules, located in the basolateral membrane where it colocalizes with KCNJ16. .
Expressed in kidney (at protein level).
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