background:
KCNJ9 belongs to the inward rectifier-type potassium channel family and is controlled by G proteins. It associates with another G-protein-activated potassium channel to form a heteromultimeric pore-forming complex. 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.
Function:
This receptor is controlled by G proteins. 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.
Subunit:
Associates with GIRK1 to form a G-protein-activated heteromultimer pore-forming unit
Subcellular Location:
Membrane; Multi-pass membrane protein.
Similarity:
Belongs to the inward rectifier-type potassium channel (TC 1.A.2.1) family. KCNJ9 subfamily.
Database links:
UniProtKB/Swiss-Prot: Q92806.2
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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