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CHRNA9:CHRNA10:AcCho transports Ca2+ from the extracellular region to the cytosol
Stable Identifier
R-HSA-9663785
Type
Reaction [transition]
Species
Homo sapiens
Compartment
plasma membrane
ReviewStatus
5/5
Locations in the PathwayBrowser
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Sensory Perception (Homo sapiens)
Sensory processing of sound (Homo sapiens)
Sensory processing of sound by outer hair cells of the cochlea (Homo sapiens)
Acetylcholine inhibits contraction of outer hair cells (Homo sapiens)
CHRNA9:CHRNA10:AcCho transports Ca2+ from the extracellular region to the cytosol (Homo sapiens)
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In response to binding acetylcholine (AcCho), the CHRNA9:CHRNA10 receptor transports calcium ions from the extracellular region to the cytosol (inferred from rat homologs). CHRNA9:CHRNA10 receptors are clustered at cholinergic synapses in the basal region of outer hair cells (OHCs) (inferred from rat homologs). The influx of calcium causes opening of SK2 channels (KCNN2) and BK channels (KCNMA1:KCNMB1), efflux of potassium ions, hyperpolarization, and inhibition of contraction of the OHCs.
Participants
Input
Ca2+ [extracellular region]
Output
Ca2+ [cytosol]
Participates
as an event of
Acetylcholine inhibits contraction of outer hair cells (Homo sapiens)
Catalyst Activity
calcium channel activity of CHRNA9:CHRNA10:AcCho [plasma membrane]
Physical Entity
CHRNA9:CHRNA10:AcCho [plasma membrane]
(Homo sapiens)
Activity
calcium channel activity (GO:0005262)
Inferred From
Chrna9:Chrna10:AcCho transports calcium ions from the extracellular region to the cytosol (Rattus norvegicus)
Cross References
Rhea
29671
Authored
May, B (2019-10-08)
Reviewed
Dallos, P (2020-09-14)
Furness, DN (2020-09-14)
Created
May, B (2019-10-12)
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