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BK channel [plasma membrane]
Stable Identifier
R-HSA-418473
Type
Complex
Species
Homo sapiens
Compartment
plasma membrane
Locations in the PathwayBrowser
Expand all
Hemostasis (Homo sapiens)
Platelet homeostasis (Homo sapiens)
Nitric oxide stimulates guanylate cyclase (Homo sapiens)
cGMP effects (Homo sapiens)
PKG1 phosphorylates BK channels (Homo sapiens)
BK channel [plasma membrane] (Homo sapiens)
Neuronal System (Homo sapiens)
Potassium Channels (Homo sapiens)
Ca2+ activated K+ channels (Homo sapiens)
Activation of Ca2+ activated Potassium channels with large conductance (Homo sapiens)
BK channel [plasma membrane] (Homo sapiens)
General
BK channels (also called Maxi-K or slo1) are potassium ion channels. They are activated by changes in membrane electrical potential and increases in intracellular [Ca2+]. Opening of BK channels results in cell membrane hyperpolarization. BK channels are tetramers of dimer subunits formed by the association of a pore-forming alpha subunit, always derived from the same gene KCNMA1, and a modulatory beta subunit, dervied from one of 4 human genes KCNMB11-4. Intracellular calcium regulates the physical association between the alpha and beta subunits.
Participants
components
x 4
BK channel beta subunit [plasma membrane]
(Homo sapiens)
x 4
KCNMA1 [plasma membrane]
(Homo sapiens)
Participates
as an input of
PKG1 phosphorylates BK channels (Homo sapiens)
Inferred To
BK channel [plasma membrane]
(Bos taurus)
BK channel [plasma membrane]
(Canis familiaris)
BK channel [plasma membrane]
(Gallus gallus)
BK channel [plasma membrane]
(Mus musculus)
BK channel [plasma membrane]
(Rattus norvegicus)
BK channel [plasma membrane]
(Sus scrofa)
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