Term Information

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Accession
GO:0086095
Name
positive regulation of IKACh channel activity by G protein-coupled acetylcholine receptor signaling pathway involved in negative regulation of heart rate
Ontology
biological_process
Synonyms
muscarinic receptor signaling pathway involved in activation of IKACH, positive regulation of IKACh channel activity by G-protein coupled acetylcholine receptor signaling, Gbeta/gamma-coupled muscarinic receptor signaling pathway involved in negative regulation of heart rate, cardiac muscarinic receptor signaling via Gbeta/gamma, muscarinic receptor signaling pathway involved in ion channel activation
Alternate IDs
None
Definition
A G protein-coupled acetylcholine receptor signaling pathway that contributes to a decrease in frequency or rate of heart contraction through activation of the IKACh potassium channel. Binding of acetylcholine to a G protein-coupled acetylcholine receptor (muscarinic receptor) on the surface of the signal-receiving cell results in liberation of the G-beta/gamma complex from the alpha subunit. The G-beta/gamma complex binds directly to the inward-rectifying potassium channel IKACh. Once the ion channel is activated, potassium ions (K+) flow out of the cell and cause it to hyperpolarize. In its hyperpolarized state, action potentials cannot be fired as quickly as possible, which slows the heart rate. Source: GOC:BHF, Wikipedia:G_protein-gated_ion_channel, GOC:mtg_cardiac_conduct_nov11
Comment
None
History
See term history for GO:0086095 at QuickGO
Chem. react.
None
Subset
gocheck_do_not_annotate
Include "regulates"
For more information, please see the ontology relation documentation.

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Parents of positive regulation of IKACh channel activity by G protein-coupled acetylcholine receptor signaling pathway involved in negative regulation of heart rate (GO:0086095)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
positive regulation of IKACh channel activity by G protein-coupled acetylcholine receptor signaling pathway involved in negative regulation of heart rate [is_a relation] is_a  G protein-coupled acetylcholine receptor signaling pathway involved in negative regulation of heart rate (GO:0086033)
positive regulation of IKACh channel activity by G protein-coupled acetylcholine receptor signaling pathway involved in negative regulation of heart rate [is_a relation] is_a  positive regulation of G-protein activated inward rectifier potassium channel activity (GO:1900129)
positive regulation of IKACh channel activity by G protein-coupled acetylcholine receptor signaling pathway involved in negative regulation of heart rate [RO:0002213 relation] RO:0002213  G-protein activated inward rectifier potassium channel activity (GO:0015467)

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