G-protein gated K+ channel (inwardly-rectifying atrial K+ channel)

Function

• I{K+.ACh} is activated by G beta-gamma dissociated from G-alpha by activation of atrial muscarinic M2 receptors

More general terms

• inwardly-rectifying K+ channel
• phosphoprotein
• multisubunit protein

Components

• inwardly-rectifying K+ channel J5; G protein-activated inward rectifier K+ channel 4; GIRK4; K+ channel, inwardly rectifying subfamily J member 5; inward rectifier K+ channel Kir3.4; heart KATP channel; KATP-1; cardiac inward rectifier; CIR (KCNJ5, GIRK4)