Potassium Channels (Homo sapiens)

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4, 6, 9, 12, 18...28, 2119205107, 23241143, 15, 16, 25115131417TASK [plasmamembrane]GABAB receptor:GABA[plasma membrane]TASK1/3 heterodimer[plasma membrane]Kv11 subunits ofvoltage gatedpotassium channels[plasma membrane]Kir4.1:Kir5.1heterotetramer[plasma membrane]HCN channels [plasmamembrane]Kv3 subunits ofvoltage gatedpotassium channels[plasma membrane]G-protein Gammasubunits [plasmamembrane]TREK homodimers[plasma membrane]GABA B receptorG-protein beta-gammacomplex [plasmamembrane]Kv9 subunits ofvoltage gatedpotassium channels[plasma membrane]HCN channels [plasmamembrane]kir2x heteroteramer[plasma membrane]HCN channel Homomerof subunt HCN2[plasma membrane]Kir heterotetramers[plasma membrane]G-protein betasubunits (1-3)[plasma membrane]HCN channel Homomerof subunit HCN4[plasma membrane]GABAB receptor[plasma membrane]Kir 4.1/5.1heterotetramer[plasma membrane]HCN channel Homomerof subunit HCN3[plasma membrane]Kir2.1:Kirx.xheterotetramer[plasma membrane]Small conductanceCa2+ activatedpotassium channel[plasma membrane]GABA B receptorG-protein beta-gammaand Kir3 channelcomplex [plasmamembrane]ATP sensitive K+channels-inwardlyrectifying (SUR2)[plasma membrane]TASK 1 homomer[plasma membrane]Kv4 subunits ofvoltage gatedpotassium channels[plasma membrane]THIK1 homodimers[plasma membrane]G-protein beta-gammasubunits [plasmamembrane]Kv10 subunits ofvoltage gatedpotassium channels[plasma membrane]Kv2 subunits ofvoltage gatedpotassium channels[plasma membrane]HCN channel Homomerof subunt HCN2[plasma membrane]Kir channels 2x[plasma membrane]Kv7 subunits ofvoltage gatedpotassium channels[plasma membrane]TWIK2 dimers [plasmamembrane]TREK members [plasmamembrane]ATP sensitivePotassium channels[plasma membrane]Kir3.x channels[plasma membrane]Voltage-gated K+channel betasubunits [plasmamembrane]HCN channel Homomerof subunit HCN1[plasma membrane]Kv8 subunits ofvoltage gatedpotassium channels[plasma membrane]HCN channel Homomerof subunit HCN4[plasma membrane]Potassium transportchannels (Kir 1.1and Kir 4.1/5.1)[plasma membrane]Small conductanceCa2+ activatedpotassium channelsubunits [plasmamembrane]Kirx.x thatinteracts withKir2.1 [plasmamembrane]TWIK channels[plasma membrane]ATP sensitive K+channels-inwardlyrectifying (SUR1)[plasma membrane]ATP sensitivePotassium channels[plasma membrane]TWIK1 dimers [plasmamembrane]Kv5 subunit ofvoltage gatedpotassium channels[plasma membrane]Octamer of Voltagegated K+ channels[plasma membrane]Kv12 subunit ofvoltage gatedpotassium channels[plasma membrane]Kv1 subunits ofvoltage gatedpotassium channels[plasma membrane]TRESK homodimer[plasma membrane]Kir4.2:Kir5.1heterotetramer[plasma membrane]Kir3 heterotetramer[plasma membrane]TALK1 homomer[plasma membrane]BK channel [plasmamembrane]Kv6 subunits ofvoltage gatedpotassium channels[plasma membrane]TALK 2 homomer[plasma membrane]KCNK7 homodimers[plasma membrane]HCN channel bound tocAMP [plasmamembrane]HCN channel Homomerof subunit HCN1[plasma membrane]BK channel betasubunit [plasmamembrane]TALK 1and 2 [plasmamembrane]HCN channel Homomerof subunit HCN3[plasma membrane]cytosolVoltage gatedpotassium channelsubunits Kv1-12[plasma membrane]KIR 1.1 homotetramer[plasma membrane]K+KCNC1 [plasmamembrane]KCNK18 [plasmamembrane]KCNS3 [plasmamembrane]KCNJ12 [plasmamembrane]GABBR1 [plasmamembrane]GNG10 [plasmamembrane]K+KCNV1 [plasmamembrane]TALK 1and 2KCNJ15 [plasmamembrane]KCNAB1 [plasmamembrane]GNG4 [plasmamembrane]KCNN3 [plasmamembrane]KCNH3 [plasmamembrane]K+KCNG4 [plasmamembrane]GABBR2 [plasmamembrane]KCNF1 [plasmamembrane]KCNK1 [plasmamembrane]KCNAB2 [plasmamembrane]KCNJ6 [plasmamembrane]HCN channel bound tocAMPKCND3 [plasmamembrane]K+ATP sensitive K+channels-inwardlyrectifying (SUR1)TASKTRESK homodimerKCNK7 [plasmamembrane]KCNG2 [plasmamembrane]KCNC4 [plasmamembrane]KCNJ9 [plasmamembrane]KCNJ3 [plasmamembrane]KCNQ1 [plasmamembrane]HCN channelsKCNK10 [plasmamembrane]K+KCNJ4 [plasmamembrane]K+KCNC3 [plasmamembrane]KCNJ10 [plasmamembrane]KCNQ5 [plasmamembrane]KCNA3 [plasmamembrane]K+Small conductanceCa2+ activatedpotassium channelTREK homodimersGNG12 [plasmamembrane]GNB2 [plasmamembrane]KCNA5 [plasmamembrane]3',5'-Cyclic AMP[cytosol]KCNS1 [plasmamembrane]HCN3 [plasmamembrane]KCNMB3 [plasmamembrane]KCNJ11 [plasmamembrane]HCN2 [plasmamembrane]KCNAB3 [plasmamembrane]KCNB1 [plasmamembrane]KCNJ16 [plasmamembrane]HCN2 [plasmamembrane]K+KCNH8 [plasmamembrane]KCNK9 [plasmamembrane]KCNJ5 [plasmamembrane]THIK1 homodimersPotassium transportchannels (Kir 1.1and Kir 4.1/5.1)KCNJ1 [plasmamembrane]GNG2 [plasmamembrane]KCNS2 [plasmamembrane]KCNK17 [plasmamembrane]KCNQ3 [plasmamembrane]GNG7 [plasmamembrane]KCNA6 [plasmamembrane]KCNA4 [plasmamembrane]KCNK3 [plasmamembrane]KCNN1 [plasmamembrane]KCNV2 [plasmamembrane]KCNJ16 [plasmamembrane]KCNG3 [plasmamembrane]KCNMB1 [plasmamembrane]K+GABA [extracellularregion]KCND1 [plasmamembrane]KCNJ2 [plasmamembrane]KCNK6 [plasmamembrane]K+ATP sensitive K+channels-inwardlyrectifying (SUR2)TWIK channels3',5'-Cyclic AMPKCNB2 [plasmamembrane]K+KCNG1 [plasmamembrane]KCNJ2 [plasmamembrane]GABA B receptorG-protein beta-gammaand Kir3 channelcomplexHCN4 [plasmamembrane]KCNH2 [plasmamembrane]KCNMB4 [plasmamembrane]GNG5 [plasmamembrane]Octamer of Voltagegated K+ channelsKCND2 [plasmamembrane]KCNA2 [plasmamembrane]KCNJ14 [plasmamembrane]GNG3 [plasmamembrane]KCNN2 [plasmamembrane]KCNJ11 [plasmamembrane]GNG8(2-67) [plasmamembrane]KCNN4GNB1 [plasmamembrane]KCNJ4 [plasmamembrane]KCNA1 [plasmamembrane]KCNK13 [plasmamembrane]KCNK4 [plasmamembrane]KCNH6 [plasmamembrane]KCNH1 [plasmamembrane]K+KCNJ12 [plasmamembrane]HCN1 [plasmamembrane]KCNH5 [plasmamembrane]HCN3 [plasmamembrane]KCNC2 [plasmamembrane]GNGT2 [plasmamembrane]KCNH7 [plasmamembrane]K+GNGT1 [plasmamembrane]K+KCNA7 [plasmamembrane]HCN4 [plasmamembrane]ABCC8 [plasmamembrane]kir2x heteroteramerKCNH4 [plasmamembrane]BK channelABCC9 [plasmamembrane]KCNK16 [plasmamembrane]KCNMB2 [plasmamembrane]KCNQ2 [plasmamembrane]K+KCNJ10 [plasmamembrane]KCNMA1 [plasmamembrane]GNB3 [plasmamembrane]KCNK2 [plasmamembrane]K+HCN1 [plasmamembrane]KCNQ4 [plasmamembrane]KCNJ8 [plasmamembrane]KCNA10 [plasmamembrane]KCNJ8 [plasmamembrane]


Description

Potassium channels are tetrameric ion channels that are widely distributed and are found in all cell types. Potassium channels control resting membrane potential in neurons, contribute to regulation of action potentials in cardiac muscle and help release of insulin form pancreatic beta cells.
Broadly K+ channels are classified into voltage gated K+ channels, Hyperpolarization activated cyclic nucleotide gated K+ channels (HCN), Tandem pore domain K+ channels, Ca2+ activated K+ channels and inwardly rectifying K+ channels.Original Pathway at Reactome: http://www.reactome.org/PathwayBrowser/#DB=gk_current&FOCUS_SPECIES_ID=48887&FOCUS_PATHWAY_ID=1296071

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Ontology Terms

 

Bibliography

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  1. Meuth SG, Kanyshkov T, Melzer N, Bittner S, Kieseier BC, Budde T, Wiendl H.; ''Altered neuronal expression of TASK1 and TASK3 potassium channels in rodent and human autoimmune CNS inflammation.''; PubMed Europe PMC Scholia
  2. Fowler CE, Aryal P, Suen KF, Slesinger PA.; ''Evidence for association of GABA(B) receptors with Kir3 channels and regulators of G protein signalling (RGS4) proteins.''; PubMed Europe PMC Scholia
  3. Kim J, Hoffman DA.; ''Potassium channels: newly found players in synaptic plasticity.''; PubMed Europe PMC Scholia
  4. Norris AJ, Foeger NC, Nerbonne JM.; ''Neuronal voltage-gated K+ (Kv) channels function in macromolecular complexes.''; PubMed Europe PMC Scholia
  5. Hill MA, Yang Y, Ella SR, Davis MJ, Braun AP.; ''Large conductance, Ca2+-activated K+ channels (BKCa) and arteriolar myogenic signaling.''; PubMed Europe PMC Scholia
  6. Alesutan I, Föller M, Sopjani M, Dërmaku-Sopjani M, Zelenak C, Fröhlich H, Velic A, Fraser S, Kemp BE, Seebohm G, Völkl H, Lang F.; ''Inhibition of the heterotetrameric K+ channel KCNQ1/KCNE1 by the AMP-activated protein kinase.''; PubMed Europe PMC Scholia
  7. Han J, Kang D, Kim D.; ''Functional properties of four splice variants of a human pancreatic tandem-pore K+ channel, TALK-1.''; PubMed Europe PMC Scholia
  8. Cramer NP, Best TK, Stoffel M, Siarey RJ, Galdzicki Z.; ''GABAB-GIRK2-mediated signaling in Down syndrome.''; PubMed Europe PMC Scholia
  9. MacKinnon R.; ''New insights into the structure and function of potassium channels.''; PubMed Europe PMC Scholia
  10. Ohya S, Fujimori T, Kimura T, Yamamura H, Imaizumi Y.; ''Novel spliced variants of large-conductance Ca(2+)-activated K(+)-channel β2-subunit in human and rodent pancreas.''; PubMed Europe PMC Scholia
  11. Biel M, Wahl-Schott C, Michalakis S, Zong X.; ''Hyperpolarization-activated cation channels: from genes to function.''; PubMed Europe PMC Scholia
  12. Kréneisz O, Benoit JP, Bayliss DA, Mulkey DK.; ''AMP-activated protein kinase inhibits TREK channels.''; PubMed Europe PMC Scholia
  13. Theilig F, Goranova I, Hirsch JR, Wieske M, Unsal S, Bachmann S, Veh RW, Derst C.; ''Cellular localization of THIK-1 (K(2P)13.1) and THIK-2 (K(2P)12.1) K channels in the mammalian kidney.''; PubMed Europe PMC Scholia
  14. Fallen K, Banerjee S, Sheehan J, Addison D, Lewis LM, Meiler J, Denton JS.; ''The Kir channel immunoglobulin domain is essential for Kir1.1 (ROMK) thermodynamic stability, trafficking and gating.''; PubMed Europe PMC Scholia
  15. Baruscotti M, Bottelli G, Milanesi R, DiFrancesco JC, DiFrancesco D.; ''HCN-related channelopathies.''; PubMed Europe PMC Scholia
  16. Sheng JZ, Ella S, Davis MJ, Hill MA, Braun AP.; ''Openers of SKCa and IKCa channels enhance agonist-evoked endothelial nitric oxide synthesis and arteriolar vasodilation.''; PubMed Europe PMC Scholia
  17. Lafrenière RG, Cader MZ, Poulin JF, Andres-Enguix I, Simoneau M, Gupta N, Boisvert K, Lafrenière F, McLaughlan S, Dubé MP, Marcinkiewicz MM, Ramagopalan S, Ansorge O, Brais B, Sequeiros J, Pereira-Monteiro JM, Griffiths LR, Tucker SJ, Ebers G, Rouleau GA.; ''A dominant-negative mutation in the TRESK potassium channel is linked to familial migraine with aura.''; PubMed Europe PMC Scholia
  18. Hibino H, Inanobe A, Furutani K, Murakami S, Findlay I, Kurachi Y.; ''Inwardly rectifying potassium channels: their structure, function, and physiological roles.''; PubMed Europe PMC Scholia
  19. Dallas ML, Scragg JL, Wyatt CN, Ross F, Hardie DG, Evans AM, Peers C.; ''Modulation of O(2) sensitive K (+) channels by AMP-activated protein kinase.''; PubMed Europe PMC Scholia
  20. Shorter K, Farjo NP, Picksley SM, Randall VA.; ''Human hair follicles contain two forms of ATP-sensitive potassium channels, only one of which is sensitive to minoxidil.''; PubMed Europe PMC Scholia
  21. Shin HG, Lu Z.; ''Mechanism of the voltage sensitivity of IRK1 inward-rectifier K+ channel block by the polyamine spermine.''; PubMed Europe PMC Scholia
  22. Feliciangeli S, Tardy MP, Sandoz G, Chatelain FC, Warth R, Barhanin J, Bendahhou S, Lesage F.; ''Potassium channel silencing by constitutive endocytosis and intracellular sequestration.''; PubMed Europe PMC Scholia
  23. Gestreau C, Heitzmann D, Thomas J, Dubreuil V, Bandulik S, Reichold M, Bendahhou S, Pierson P, Sterner C, Peyronnet-Roux J, Benfriha C, Tegtmeier I, Ehnes H, Georgieff M, Lesage F, Brunet JF, Goridis C, Warth R, Barhanin J.; ''Task2 potassium channels set central respiratory CO2 and O2 sensitivity.''; PubMed Europe PMC Scholia
  24. McKeown L, Swanton L, Robinson P, Jones OT.; ''Surface expression and distribution of voltage-gated potassium channels in neurons (Review).''; PubMed Europe PMC Scholia
  25. Pongs O, Schwarz JR.; ''Ancillary subunits associated with voltage-dependent K+ channels.''; PubMed Europe PMC Scholia
  26. Moroni A, Gorza L, Beltrame M, Gravante B, Vaccari T, Bianchi ME, Altomare C, Longhi R, Heurteaux C, Vitadello M, Malgaroli A, DiFrancesco D.; ''Hyperpolarization-activated cyclic nucleotide-gated channel 1 is a molecular determinant of the cardiac pacemaker current I(f).''; PubMed Europe PMC Scholia
  27. Toyoda H, Saito M, Okazawa M, Hirao K, Sato H, Abe H, Takada K, Funabiki K, Takada M, Kaneko T, Kang Y.; ''Protein kinase G dynamically modulates TASK1-mediated leak K+ currents in cholinergic neurons of the basal forebrain.''; PubMed Europe PMC Scholia
  28. Krenz M, Oldenburg O, Wimpee H, Cohen MV, Garlid KD, Critz SD, Downey JM, Benoit JN.; ''Opening of ATP-sensitive potassium channels causes generation of free radicals in vascular smooth muscle cells.''; PubMed Europe PMC Scholia
  29. Xie K, Allen KL, Kourrich S, Colón-Saez J, Thomas MJ, Wickman K, Martemyanov KA.; ''Gbeta5 recruits R7 RGS proteins to GIRK channels to regulate the timing of neuronal inhibitory signaling.''; PubMed Europe PMC Scholia

History

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CompareRevisionActionTimeUserComment
114844view16:34, 25 January 2021ReactomeTeamReactome version 75
113290view11:36, 2 November 2020ReactomeTeamReactome version 74
112502view15:46, 9 October 2020ReactomeTeamReactome version 73
101414view11:29, 1 November 2018ReactomeTeamreactome version 66
100952view21:06, 31 October 2018ReactomeTeamreactome version 65
100489view19:40, 31 October 2018ReactomeTeamreactome version 64
100034view16:23, 31 October 2018ReactomeTeamreactome version 63
99587view14:57, 31 October 2018ReactomeTeamreactome version 62 (2nd attempt)
93800view13:37, 16 August 2017ReactomeTeamreactome version 61
93337view11:20, 9 August 2017ReactomeTeamreactome version 61
88104view09:34, 26 July 2016RyanmillerOntology Term : 'ion transport pathway' added !
88103view09:33, 26 July 2016RyanmillerOntology Term : 'regulatory pathway' added !
86424view09:17, 11 July 2016ReactomeTeamreactome version 56
83272view10:37, 18 November 2015ReactomeTeamVersion54
81384view12:54, 21 August 2015ReactomeTeamVersion53
76853view08:12, 17 July 2014ReactomeTeamFixed remaining interactions
76558view11:54, 16 July 2014ReactomeTeamFixed remaining interactions
75891view09:54, 11 June 2014ReactomeTeamRe-fixing comment source
75591view10:43, 10 June 2014ReactomeTeamReactome 48 Update
74946view13:47, 8 May 2014AnweshaFixing comment source for displaying WikiPathways description
74590view08:38, 30 April 2014ReactomeTeamNew pathway

External references

DataNodes

View all...
NameTypeDatabase referenceComment
3',5'-Cyclic AMP [cytosol]MetaboliteCHEBI:17489 (ChEBI)
3',5'-Cyclic AMPMetaboliteCHEBI:17489 (ChEBI)
ABCC8 [plasma membrane]ProteinQ09428 (Uniprot-TrEMBL)
ABCC9 [plasma membrane]ProteinO60706 (Uniprot-TrEMBL)
ATP sensitive K+

channels-inwardly

rectifying (SUR1)
ComplexREACT_76659 (Reactome)
ATP sensitive K+

channels-inwardly

rectifying (SUR2)
ComplexREACT_111451 (Reactome)
BK channelComplexREACT_24118 (Reactome) 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.
GABA B receptor

G-protein beta-gamma and Kir3 channel

complex
ComplexREACT_26489 (Reactome)
GABA [extracellular region]MetaboliteCHEBI:16865 (ChEBI)
GABBR1 [plasma membrane]ProteinQ9UBS5 (Uniprot-TrEMBL)
GABBR2 [plasma membrane]ProteinO75899 (Uniprot-TrEMBL)
GNB1 [plasma membrane]ProteinP62873 (Uniprot-TrEMBL)
GNB2 [plasma membrane]ProteinP62879 (Uniprot-TrEMBL)
GNB3 [plasma membrane]ProteinP16520 (Uniprot-TrEMBL)
GNG10 [plasma membrane]ProteinP50151 (Uniprot-TrEMBL)
GNG12 [plasma membrane]ProteinQ9UBI6 (Uniprot-TrEMBL)
GNG2 [plasma membrane]ProteinP59768 (Uniprot-TrEMBL)
GNG3 [plasma membrane]ProteinP63215 (Uniprot-TrEMBL)
GNG4 [plasma membrane]ProteinP50150 (Uniprot-TrEMBL)
GNG5 [plasma membrane]ProteinP63218 (Uniprot-TrEMBL)
GNG7 [plasma membrane]ProteinO60262 (Uniprot-TrEMBL)
GNG8(2-67) [plasma membrane]ProteinQ9UK08 (Uniprot-TrEMBL)
GNGT1 [plasma membrane]ProteinP63211 (Uniprot-TrEMBL)
GNGT2 [plasma membrane]ProteinO14610 (Uniprot-TrEMBL)
HCN channel bound to cAMPComplexREACT_76050 (Reactome)
HCN channelsComplexREACT_76601 (Reactome)
HCN1 [plasma membrane]ProteinO60741 (Uniprot-TrEMBL)
HCN2 [plasma membrane]ProteinQ9UL51 (Uniprot-TrEMBL)
HCN3 [plasma membrane]ProteinQ9P1Z3 (Uniprot-TrEMBL)
HCN4 [plasma membrane]ProteinQ9Y3Q4 (Uniprot-TrEMBL)
K+MetaboliteCHEBI:29103 (ChEBI)
KCNA1 [plasma membrane]ProteinQ09470 (Uniprot-TrEMBL)
KCNA10 [plasma membrane]ProteinQ16322 (Uniprot-TrEMBL)
KCNA2 [plasma membrane]ProteinP16389 (Uniprot-TrEMBL)
KCNA3 [plasma membrane]ProteinP22001 (Uniprot-TrEMBL)
KCNA4 [plasma membrane]ProteinP22459 (Uniprot-TrEMBL)
KCNA5 [plasma membrane]ProteinP22460 (Uniprot-TrEMBL)
KCNA6 [plasma membrane]ProteinP17658 (Uniprot-TrEMBL)
KCNA7 [plasma membrane]ProteinQ96RP8 (Uniprot-TrEMBL)
KCNAB1 [plasma membrane]ProteinQ14722 (Uniprot-TrEMBL)
KCNAB2 [plasma membrane]ProteinQ13303 (Uniprot-TrEMBL)
KCNAB3 [plasma membrane]ProteinO43448 (Uniprot-TrEMBL)
KCNB1 [plasma membrane]ProteinQ14721 (Uniprot-TrEMBL)
KCNB2 [plasma membrane]ProteinQ92953 (Uniprot-TrEMBL)
KCNC1 [plasma membrane]ProteinP48547 (Uniprot-TrEMBL)
KCNC2 [plasma membrane]ProteinQ96PR1 (Uniprot-TrEMBL)
KCNC3 [plasma membrane]ProteinQ14003 (Uniprot-TrEMBL)
KCNC4 [plasma membrane]ProteinQ03721 (Uniprot-TrEMBL)
KCND1 [plasma membrane]ProteinQ9NSA2 (Uniprot-TrEMBL)
KCND2 [plasma membrane]ProteinQ9NZV8 (Uniprot-TrEMBL)
KCND3 [plasma membrane]ProteinQ9UK17 (Uniprot-TrEMBL)
KCNF1 [plasma membrane]ProteinQ9H3M0 (Uniprot-TrEMBL)
KCNG1 [plasma membrane]ProteinQ9UIX4 (Uniprot-TrEMBL)
KCNG2 [plasma membrane]ProteinQ9UJ96 (Uniprot-TrEMBL)
KCNG3 [plasma membrane]ProteinQ8TAE7 (Uniprot-TrEMBL)
KCNG4 [plasma membrane]ProteinQ8TDN1 (Uniprot-TrEMBL)
KCNH1 [plasma membrane]ProteinO95259 (Uniprot-TrEMBL)
KCNH2 [plasma membrane]ProteinQ12809 (Uniprot-TrEMBL)
KCNH3 [plasma membrane]ProteinQ9ULD8 (Uniprot-TrEMBL)
KCNH4 [plasma membrane]ProteinQ9UQ05 (Uniprot-TrEMBL)
KCNH5 [plasma membrane]ProteinQ8NCM2 (Uniprot-TrEMBL)
KCNH6 [plasma membrane]ProteinQ9H252 (Uniprot-TrEMBL)
KCNH7 [plasma membrane]ProteinQ9NS40 (Uniprot-TrEMBL)
KCNH8 [plasma membrane]ProteinQ96L42 (Uniprot-TrEMBL)
KCNJ1 [plasma membrane]ProteinP48048 (Uniprot-TrEMBL)
KCNJ10 [plasma membrane]ProteinP78508 (Uniprot-TrEMBL)
KCNJ11 [plasma membrane]ProteinQ14654 (Uniprot-TrEMBL)
KCNJ12 [plasma membrane]ProteinQ14500 (Uniprot-TrEMBL)
KCNJ14 [plasma membrane]ProteinQ9UNX9 (Uniprot-TrEMBL)
KCNJ15 [plasma membrane]ProteinQ99712 (Uniprot-TrEMBL)
KCNJ16 [plasma membrane]ProteinQ9NPI9 (Uniprot-TrEMBL)
KCNJ2 [plasma membrane]ProteinP63252 (Uniprot-TrEMBL)
KCNJ3 [plasma membrane]ProteinP48549 (Uniprot-TrEMBL)
KCNJ4 [plasma membrane]ProteinP48050 (Uniprot-TrEMBL)
KCNJ5 [plasma membrane]ProteinP48544 (Uniprot-TrEMBL)
KCNJ6 [plasma membrane]ProteinP48051 (Uniprot-TrEMBL)
KCNJ8 [plasma membrane]ProteinQ15842 (Uniprot-TrEMBL)
KCNJ9 [plasma membrane]ProteinQ92806 (Uniprot-TrEMBL)
KCNK1 [plasma membrane]ProteinO00180 (Uniprot-TrEMBL)
KCNK10 [plasma membrane]ProteinP57789 (Uniprot-TrEMBL)
KCNK13 [plasma membrane]ProteinQ9HB14 (Uniprot-TrEMBL)
KCNK16 [plasma membrane]ProteinQ96T55 (Uniprot-TrEMBL)
KCNK17 [plasma membrane]ProteinQ96T54 (Uniprot-TrEMBL)
KCNK18 [plasma membrane]ProteinQ7Z418 (Uniprot-TrEMBL)
KCNK2 [plasma membrane]ProteinO95069 (Uniprot-TrEMBL)
KCNK3 [plasma membrane]ProteinO14649 (Uniprot-TrEMBL)
KCNK4 [plasma membrane]ProteinQ9NYG8 (Uniprot-TrEMBL)
KCNK6 [plasma membrane]ProteinQ9Y257 (Uniprot-TrEMBL)
KCNK7 [plasma membrane]ProteinQ9Y2U2 (Uniprot-TrEMBL)
KCNK9 [plasma membrane]ProteinQ9NPC2 (Uniprot-TrEMBL)
KCNMA1 [plasma membrane]ProteinQ12791 (Uniprot-TrEMBL)
KCNMB1 [plasma membrane]ProteinQ16558 (Uniprot-TrEMBL)
KCNMB2 [plasma membrane]ProteinQ9Y691 (Uniprot-TrEMBL)
KCNMB3 [plasma membrane]ProteinQ9NPA1 (Uniprot-TrEMBL)
KCNMB4 [plasma membrane]ProteinQ86W47 (Uniprot-TrEMBL)
KCNN1 [plasma membrane]ProteinQ92952 (Uniprot-TrEMBL)
KCNN2 [plasma membrane]ProteinQ9H2S1 (Uniprot-TrEMBL)
KCNN3 [plasma membrane]ProteinQ9UGI6 (Uniprot-TrEMBL)
KCNN4ProteinO15554 (Uniprot-TrEMBL)
KCNQ1 [plasma membrane]ProteinP51787 (Uniprot-TrEMBL)
KCNQ2 [plasma membrane]ProteinO43526 (Uniprot-TrEMBL)
KCNQ3 [plasma membrane]ProteinO43525 (Uniprot-TrEMBL)
KCNQ4 [plasma membrane]ProteinP56696 (Uniprot-TrEMBL)
KCNQ5 [plasma membrane]ProteinQ9NR82 (Uniprot-TrEMBL)
KCNS1 [plasma membrane]ProteinQ96KK3 (Uniprot-TrEMBL)
KCNS2 [plasma membrane]ProteinQ9ULS6 (Uniprot-TrEMBL)
KCNS3 [plasma membrane]ProteinQ9BQ31 (Uniprot-TrEMBL)
KCNV1 [plasma membrane]ProteinQ6PIU1 (Uniprot-TrEMBL)
KCNV2 [plasma membrane]ProteinQ8TDN2 (Uniprot-TrEMBL)
Octamer of Voltage gated K+ channelsComplexREACT_76615 (Reactome)
Potassium transport

channels (Kir 1.1

and Kir 4.1/5.1)
ComplexREACT_76764 (Reactome)
Small conductance

Ca2+ activated

potassium channel
ComplexREACT_76180 (Reactome)
TALK 1and 2ComplexREACT_76406 (Reactome)
TASKComplexREACT_76290 (Reactome)
THIK1 homodimersComplexREACT_76759 (Reactome)
TREK homodimersComplexREACT_76233 (Reactome)
TRESK homodimerComplexREACT_76459 (Reactome)
TWIK channelsComplexREACT_76670 (Reactome)
kir2x heteroteramerComplexREACT_76901 (Reactome) Kir 2 channels form heterotetramers of any two of the four subunits.

Annotated Interactions

View all...
SourceTargetTypeDatabase referenceComment
3',5'-Cyclic AMPREACT_75751 (Reactome)
ATP sensitive K+

channels-inwardly

rectifying (SUR1)
mim-catalysisREACT_75911 (Reactome)
ATP sensitive K+

channels-inwardly

rectifying (SUR2)
mim-catalysisREACT_111144 (Reactome)
BK channelmim-catalysisREACT_75757 (Reactome)
GABA B receptor

G-protein beta-gamma and Kir3 channel

complex
mim-catalysisREACT_25066 (Reactome)
HCN channel bound to cAMPArrowREACT_75751 (Reactome)
HCN channel bound to cAMPmim-catalysisREACT_75788 (Reactome)
HCN channelsREACT_75751 (Reactome)
K+ArrowREACT_111144 (Reactome)
K+ArrowREACT_25066 (Reactome)
K+ArrowREACT_75749 (Reactome)
K+ArrowREACT_75757 (Reactome)
K+ArrowREACT_75758 (Reactome)
K+ArrowREACT_75772 (Reactome)
K+ArrowREACT_75788 (Reactome)
K+ArrowREACT_75793 (Reactome)
K+ArrowREACT_75806 (Reactome)
K+ArrowREACT_75810 (Reactome)
K+ArrowREACT_75830 (Reactome)
K+ArrowREACT_75846 (Reactome)
K+ArrowREACT_75857 (Reactome)
K+ArrowREACT_75865 (Reactome)
K+ArrowREACT_75911 (Reactome)
K+ArrowREACT_75935 (Reactome)
K+REACT_111144 (Reactome)
K+REACT_25066 (Reactome)
K+REACT_75749 (Reactome)
K+REACT_75757 (Reactome)
K+REACT_75758 (Reactome)
K+REACT_75772 (Reactome)
K+REACT_75788 (Reactome)
K+REACT_75793 (Reactome)
K+REACT_75806 (Reactome)
K+REACT_75810 (Reactome)
K+REACT_75830 (Reactome)
K+REACT_75846 (Reactome)
K+REACT_75857 (Reactome)
K+REACT_75865 (Reactome)
K+REACT_75911 (Reactome)
K+REACT_75935 (Reactome)
KCNN4mim-catalysisREACT_75793 (Reactome)
Octamer of Voltage gated K+ channelsmim-catalysisREACT_75857 (Reactome)
Potassium transport

channels (Kir 1.1

and Kir 4.1/5.1)
mim-catalysisREACT_75810 (Reactome)
REACT_111144 (Reactome) In muscle cells such as cardiac, skeletal, vascular and nonvascular smooth muscle, ATP sensitive K+ channels assemble as octamers of four Kir 6.x subunits and four low-affinity sulfonyl urea receptor 2 subunits (SUR2). The human gene encoding SUR2 gives rise to two splice variants, SUR2A and SUR2B. These channels are blocked by excess intracellular levels of ATP. When the ATP is low, ATP dissociates and the channel opens to allow K+ efflux ().
REACT_25066 (Reactome) Binding of G beta gamma activates the GIRK/Kir3 channels that allow the efflux of K+ out of the cell resulting in a hyperpolarized membrane potential. This negative membrane potential prevents the activation of voltage dependent Ca2+ channels.
REACT_75749 (Reactome) TALK is activated by increase in pH alkalinity in the extracellular fluid. Potassium is pumped out into the extracellular fluid.
REACT_75751 (Reactome) HCN channels require cAMP binding and hyperpolarization of membrane potential for channel opening.
REACT_75757 (Reactome) Increase in intracellular concentration of Ca2+ ions and membrane depolarization cooperatively activates BKca, which exhibit large unitary conductance. Ca2+ activated potassium channels. Activation leads to K+ efflux which changes the membrane potential, which leads to inactivation voltage activated Ca2+ channels. BKca are involved in regulation of smooth muscle tone, microbial killing in leukocytes and modulation of neurotransmitter release. Activation of BKca channel with increase in intracellular concentration of Ca2+ leads to efflux of K+ into the extracellular space, which contributes to hyperpolarization of the membrane potential.
REACT_75758 (Reactome) Activation of classical kir channels results in K+ efflux which contributes to repolarization and resetting of the membrane potential.
REACT_75772 (Reactome) THIK subfamily has 2 members, THIK1 and THIK 2. THIK 1 forms functional homodimers whereas THIK2 function has not been demonstrated. THIK1 channels are inhibited by halothane. THICK1 channels form K+ leak channels and are not regulated by acidity or alkalanity changes.
REACT_75788 (Reactome) HCN channels are activated upon hyperpolarization of membrane potential and cAMP binding leading to K+ efflux.
REACT_75793 (Reactome) Intermediate conductance K+ channels are restricted to non neuronal tissues like epithelia, blood cells and are activated by intracellular Ca2+ ion concentration. Activation of Ca2+ activated K+ channels with intermediate conductance leads to K+ efflux in to the extracellular space.
REACT_75806 (Reactome) Activation of TWIK channels results in low outward K+ currents.
REACT_75810 (Reactome) Homotetramers of Kir 1.1 function as inwardly rectifying potassium transport channels. Ki 1.1 are found on the apical side of the cells in the ascending limp of loop of henle and upon activation transport K+ into the extracellular space. Heterotetramers of Kir 4.1 and Ki 5.1 are found on the basolateral side of cells in the distal convoluted tube. Activation of kir 4.1 and 5.1 heterotetramers leads to efflux of K+ into the extracellular space.
REACT_75830 (Reactome) Small conductance Ca2+ activated potassium channels (SKca) are solely activated by intracellular Ca2+ concentration. SKca channels form functional tetramers. SKca channels control the contractility of uterus, maintian vascular tone, modulate hormone secretion, control cell volume in red blood cells and activation of microglia and lymphocytes. Actiavtion of SKca channels is triggered by increase in the intracellular Ca2+ ion concentration. Activation of Skca channels leads to relatively small K+ ion effluxes.
REACT_75846 (Reactome) TREK channels are activated by mechanical stretch, pH temperature and arachidonic acid which leads to efflux of K+ into the extracellular space resulting in membrane hyperpolarization.
REACT_75857 (Reactome) Activation of voltage gated potassium channel is triggered by membrane potential changes that is sensed by the channel assembly. Activation of voltage-gated potassium channel leads to selective outward current of K+ ions.
REACT_75865 (Reactome) TRESK is expressed in spinal cord and brain and is involved in K+ efflux. TRESK activation may be mediated by calcineurin.
REACT_75911 (Reactome) In neuroendocrine cells such as pancreatic alpha-, beta-, and delta-cells and in the brain, ATP sensitive K+ channels assemble as octamers of four Kir 6.1, 6.2 subunits and four high-affinity sulfonyl urea receptor 1 subunits (SUR1). These channels are blocked by excess intracellular levels of ATP. When the ATP is low, ATP dissociates and the channel opens to allow K+ efflux.
REACT_75935 (Reactome) TASK are tandem repeat K+ channels that are sensitive to extracellular pH. Activation of TASK results in efflux of K+ into the extracellular space.
Small conductance

Ca2+ activated

potassium channel
mim-catalysisREACT_75830 (Reactome)
TALK 1and 2mim-catalysisREACT_75749 (Reactome)
TASKmim-catalysisREACT_75935 (Reactome)
THIK1 homodimersmim-catalysisREACT_75772 (Reactome)
TREK homodimersmim-catalysisREACT_75846 (Reactome)
TRESK homodimermim-catalysisREACT_75865 (Reactome)
TWIK channelsmim-catalysisREACT_75806 (Reactome)
kir2x heteroteramermim-catalysisREACT_75758 (Reactome)
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