Synonyms ATP-sensitive inward rectifier potassium channel 11, beta-cell inward rectifier, BIR + [7] |
Introduction Inward rectifier potassium channel that forms the pore of ATP-sensitive potassium channels (KATP), regulating potassium permeability as a function of cytoplasmic ATP and ADP concentrations in many different cells (PubMed:29286281, PubMed:34815345). 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 (By similarity). In pancreatic cells, it forms KATP channels with ABCC8/SUR1 (PubMed:29286281, PubMed:34815345). Can form cardiac and smooth muscle-type KATP channels with ABCC9. |
Target |
Mechanism ABCC9 agonists [+1] |
Active Org. |
Originator Org. |
Active Indication |
Inactive Indication- |
Drug Highest PhaseApproved |
First Approval Ctry. / Loc. United States |
First Approval Date18 Oct 1979 |
Target |
Mechanism BSEP inhibitors [+2] |
Active Org. |
Originator Org. |
Active Indication |
Inactive Indication |
Drug Highest PhaseApproved |
First Approval Ctry. / Loc. Japan |
First Approval Date02 Mar 1971 |
Target |
Mechanism Kir6.2 agonists [+1] |
Active Org. |
Originator Org. |
Active Indication |
Inactive Indication- |
Drug Highest PhaseApproved |
First Approval Ctry. / Loc. United States |
First Approval Date31 May 1957 |
Start Date06 Apr 2026 |
Sponsor / Collaborator- |
Start Date01 Jul 2025 |
Sponsor / Collaborator- |
Start Date01 Apr 2025 |
Sponsor / Collaborator- |