= G protein-coupled inwardly rectifying potassium channel
{wiki=G_protein-coupled_inwardly_rectifying_potassium_channel}
G protein-coupled inwardly rectifying potassium channels (GIRKs or K_IR channels) are a type of ion channel that play a crucial role in regulating the electrical activity of cells, particularly in the heart and nervous system. These channels are activated by G protein-coupled receptors (GPCRs) and help mediate the effects of neurotransmitters and hormones on cell excitability.
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