KCNK3

Protein-coding gene in the species Homo sapiens

KCNK3

Available structures

PDB

Ortholog search: PDBe RCSB

List of PDB id codes
6RV2, 6RV3, 6RV4

Identifiers

Aliases

KCNK3, K2p3.1, OAT1, PPH4, TASK, TASK-1, TBAK1, potassium two pore domain channel subfamily K member 3, TASK1

External IDs

OMIM: 603220 MGI: 1100509 HomoloGene: 1692 GeneCards: KCNK3

Gene location (Human)

Chr.	Chromosome 2 (human)^[1]

Band	2p23.3	Start	26,692,722 bp^[1]
Band	2p23.3	End	26,733,420 bp^[1]

Gene location (Mouse)

Chr.	Chromosome 5 (mouse)^[2]

Band	5 B1\|5 16.68 cM	Start	30,745,514 bp^[2]
Band	5 B1\|5 16.68 cM	End	30,782,615 bp^[2]

RNA expression pattern

Bgee

Human

Mouse (ortholog)

Top expressed in

left adrenal gland

adrenal cortex

lower lobe of lung

right lung

pons

upper lobe of lung

upper lobe of left lung

cerebellar vermis

body of pancreas

frontal pole

Top expressed in

adrenal gland

brown adipose tissue

myocardium of ventricle

right ventricle

cerebellar cortex

facial motor nucleus

cardiac muscles

cerebellar vermis

interventricular septum

left ventricle

More reference expression data

BioGPS


More reference expression data

Gene ontology
Molecular function	S100 protein binding potassium channel activity protein homodimerization activity open rectifier potassium channel activity potassium ion leak channel activity ion channel activity protein heterodimerization activity growth factor activity protein C-terminus binding protein binding
Cellular component	integral component of membrane membrane plasma membrane integral component of plasma membrane extracellular space
Biological process	cochlea development ion transport cellular response to zinc ion potassium ion transport ion transmembrane transport brain development cardiac conduction potassium ion transmembrane transport cellular response to hypoxia negative regulation of cytosolic calcium ion concentration chemical synaptic transmission stabilization of membrane potential regulation of signaling receptor activity
Sources:Amigo / QuickGO

Orthologs

Species

Human

Mouse

Entrez


3777


16527

Ensembl


ENSG00000171303


ENSMUSG00000049265

UniProt


O14649


O35111

RefSeq (mRNA)


NM_002246


NM_010608

RefSeq (protein)


NP_002237


NP_034738

Location (UCSC)

Chr 2: 26.69 – 26.73 Mb

Chr 5: 30.75 – 30.78 Mb

PubMed search

^[3]

^[4]

Wikidata

View/Edit Human

View/Edit Mouse

Potassium channel subfamily K member 3 is a protein that in humans is encoded by the KCNK3 gene.^[5]^[6]^[7]^[8]

This gene encodes K_2P3.1, one of the members of the superfamily of potassium channel proteins containing two pore-forming P domains. K_2P3.1 is an outwardly rectifying channel that is sensitive to changes in extracellular pH and is inhibited by extracellular acidification. Also referred to as an acid-sensitive potassium channel, it is activated by the anesthetics halothane and isoflurane. Although three transcripts are detected in northern blots, there is currently no sequence available to confirm transcript variants for this gene.^[8]

Interactive pathway map

Click on genes, proteins and metabolites below to link to respective articles.^{[§ 1]}

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|alt=Nicotine Activity on Dopaminergic Neurons edit]]

Nicotine Activity on Dopaminergic Neurons edit

^ The interactive pathway map can be edited at WikiPathways: "NicotineDopaminergic_WP1602".

Interactions

KCNK3 has been shown to interact with YWHAB^[9] and S100A10.^[10]

References

^ ^a ^b ^c GRCh38: Ensembl release 89: ENSG00000171303 – Ensembl, May 2017
^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000049265 – Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ Duprat F, Lesage F, Fink M, Reyes R, Heurteaux C, Lazdunski M (Dec 1997). "TASK, a human background K+ channel to sense external pH variations near physiological pH". EMBO J. 16 (17): 5464–71. doi:10.1093/emboj/16.17.5464. PMC 1170177. PMID 9312005.
^ Lesage F, Lazdunski M (Oct 1998). "Mapping of human potassium channel genes TREK-1 (KCNK2) and TASK (KCNK3) to chromosomes 1q41 and 2p23". Genomics. 51 (3): 478–9. doi:10.1006/geno.1998.5397. PMID 9721223.
^ Goldstein SA, Bayliss DA, Kim D, Lesage F, Plant LD, Rajan S (Dec 2005). "International Union of Pharmacology. LV. Nomenclature and molecular relationships of two-P potassium channels". Pharmacol Rev. 57 (4): 527–40. doi:10.1124/pr.57.4.12. PMID 16382106. S2CID 7356601.
^ ^a ^b "Entrez Gene: KCNK3 potassium channel, subfamily K, member 3".
^ O'Kelly, Ita; Butler Margaret H; Zilberberg Noam; Goldstein Steve A N (Nov 2002). "Forward transport. 14-3-3 binding overcomes retention in endoplasmic reticulum by dibasic signals". Cell. 111 (4). United States: 577–88. doi:10.1016/S0092-8674(02)01040-1. ISSN 0092-8674. PMID 12437930. S2CID 15898814.
^ Girard, Christophe; Tinel Norbert; Terrenoire Cécile; Romey Georges; Lazdunski Michel; Borsotto Marc (Sep 2002). "p11, an annexin II subunit, an auxiliary protein associated with the background K+ channel, TASK-1". EMBO J. 21 (17). England: 4439–48. doi:10.1093/emboj/cdf469. ISSN 0261-4189. PMC 125412. PMID 12198146.

External links

KCNK3+protein,+human at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

This article incorporates text from the United States National Library of Medicine, which is in the public domain.

Membrane transport protein: ion channels (TC 1A)

Ca²⁺: Calcium channel

Ligand-gated	Inositol trisphosphate receptor 1 2 3 Ryanodine receptor 1 2 3
Voltage-gated	L-type/Ca_vα 1.1 1.2 1.3 1.4 N-type/Ca_vα2.2 P-type/Ca_vα 2.1 Q-type/Ca_vα2.1 R-type/Ca_vα2.3 T-type/Ca_vα 3.1 3.2 3.3 α₂δ-subunits 1 2 β-subunits β1 β2 β3 β4 γ-subunits γ1 γ2 γ3 γ4 Cation channels of sperm 1 2 3 4 Two-pore channel 1 2

Na⁺: Sodium channel

Constitutively active	Epithelial sodium channel α β γ δ
Proton-gated	Amiloride-sensitive cation channel 1 2 3 4
Voltage-gated	Na_vα 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 7A Na_vβ 1 2 3 4

K⁺: Potassium channel

Calcium-activated	BK channel α1 β1 β2 β3 β4 SK channel SK1 SK2 SK3 IK channel IK1 K_Ca 1.1 2.1 2.2 2.3 3.1 4.1 4.2 5.1
Inward-rectifier	K_ATP K_ir 1.1 2.1 2.2 2.3 2.4 2.6 GIRK/K_ir 3.1 3.2 3.3 3.4 K_ir 4.1 4.2 5.1 6.1 6.2 7.1
Tandem pore domain	K2P 1 2 3 4 5 6 7 9 10 12 13 15 16 17 18
Voltage-gated	K_vα1-6 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 2.1 2.2 3.1 3.2 3.3 3.4 4.1 4.2 4.3 5.1 6.1 6.2 6.3 6.4 K_vα7-12 7.1 7.2 7.3 7.4 7.5 8.1 8.2 9.1 9.2 9.3 10.1 10.2 11.1/hERG 11.2 11.3 12.1 12.2 12.3 K_vβ 1 2 3 KCNIP 1 2 3 4 minK/ISK minK/ISK-like MiRP 1 2 3 Shaker (gene)

Miscellaneous

Cl⁻: Chloride channel	Calcium-activated chloride channels Anoctamin ANO1 Bestrophin 1 2 Chloride Channel Accessory 1 2 3 4 CFTR CLCN 1 2 3 4 5 6 7 KA KB CLIC 1 2 3 4 5 6 L1 CLNS 1A 1B
H⁺: Proton channel	HVCN1
M⁺: CNG cation channel	α 1 2 3 4 β 1 2 3 HCN FC 1 2 3 4
M⁺: TRP cation channel	TRPA (1) TRPC 1 2 3 4 4AP 5 6 7 TRPM 1 2 3 4 5 6 7 8 TRPML 1 2 3 TRPN TRPP 1 2 TRPV 1 2 3 4 5 6
H₂O (+ solutes): Porin	Aquaporin 0 1 2 3 4 5 6 7 8 9 Voltage-dependent anion channel 1 2 3 General bacterial porin family
Cytoplasm: Gap junction	Connexin A GJA1 GJA3 GJA4 GJA5 GJA8 GJA9 GJA10 B GJB1 GJB2 GJB3 GJB4 GJB5 GJB6 GJB7 C GJC1 GJC2 GJC3 D GJD2 GJD3 GJD4 Innexin