KCNJ14

From Wikipedia, the free encyclopedia

Potassium inwardly-rectifying channel, subfamily J, member 14

Identifiers

KCNJ14; IRK4; KIR2.4; MGC46111

External IDs

OMIM: 603953 MGI: 2384820 HomoloGene: 27086

Gene ontology
Molecular Function:	• inward rectifier potassium channel activity • voltage-gated ion channel activity • potassium ion binding
Cellular Component:	• voltage-gated potassium channel complex • membrane • integral to membrane
Biological Process:	• ion transport • potassium ion transport

RNA expression pattern

More reference expression data

Orthologs

Human

Mouse

Refseq

NM_013348 (mRNA)
NP_037480 (protein)

NM_145963 (mRNA)
NP_666075 (protein)

Location

Chr 19: 53.65 - 53.66 Mb

Chr 7: 45.68 - 45.69 Mb

Pubmed search

[1]

[2]

Potassium inwardly-rectifying channel, subfamily J, member 14 (KCNJ14), also known as K_ir2.4, is a human gene.^[1]

Potassium channels are present in most mammalian cells, where they participate in a wide range of physiologic responses. The protein encoded by this gene is an integral membrane protein and inward-rectifier type potassium channel, and probably has a role in controlling the excitability of motor neurons. Two transcript variants encoding the same protein have been found for this gene.^[1]

1 See also
2 References
3 Further reading
4 External links

[edit] See also

Inward-rectifier potassium ion channel

[edit] References

^ ^a ^b Entrez Gene: KCNJ14 potassium inwardly-rectifying channel, subfamily J, member 14.

[edit] Further reading

Kubo Y, Adelman JP, Clapham DE, et al. (2006). "International Union of Pharmacology. LIV. Nomenclature and molecular relationships of inwardly rectifying potassium channels.". Pharmacol. Rev. 57 (4): 509–26. doi:10.1124/pr.57.4.11. PMID 16382105.
Bonaldo MF, Lennon G, Soares MB (1997). "Normalization and subtraction: two approaches to facilitate gene discovery.". Genome Res. 6 (9): 791–806. PMID 8889548.
Töpert C, Döring F, Wischmeyer E, et al. (1998). "Kir2.4: a novel K+ inward rectifier channel associated with motoneurons of cranial nerve nuclei.". J. Neurosci. 18 (11): 4096–105. PMID 9592090.
Töpert C, Döring F, Derst C, et al. (2000). "Cloning, structure and assignment to chromosome 19q13 of the human Kir2.4 inwardly rectifying potassium channel gene (KCNJ14).". Mamm. Genome 11 (3): 247–9. PMID 10723734.
Hughes BA, Kumar G, Yuan Y, et al. (2000). "Cloning and functional expression of human retinal kir2.4, a pH-sensitive inwardly rectifying K(+) channel.". Am. J. Physiol., Cell Physiol. 279 (3): C771–84. PMID 10942728.
Nagase T, Kikuno R, Ohara O (2002). "Prediction of the coding sequences of unidentified human genes. XXII. The complete sequences of 50 new cDNA clones which code for large proteins.". DNA Res. 8 (6): 319–27. PMID 11853319.
Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMID 12477932.
Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMID 15489334.
Fang Y, Schram G, Romanenko VG, et al. (2005). "Functional expression of Kir2.x in human aortic endothelial cells: the dominant role of Kir2.2.". Am. J. Physiol., Cell Physiol. 289 (5): C1134–44. doi:10.1152/ajpcell.00077.2005. PMID 15958527.
Tennant BP, Cui Y, Tinker A, Clapp LH (2007). "Functional expression of inward rectifier potassium channels in cultured human pulmonary smooth muscle cells: evidence for a major role of Kir2.4 subunits.". J. Membr. Biol. 213 (1): 19–29. doi:10.1007/s00232-006-0037-y. PMID 17347781.

[edit] External links

MeSH KCNJ14+protein,+human

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

v • d • e Membrane transport protein: ion channels

Ca²⁺: Calcium channel	Voltage-dependent calcium channel (L-type/Ca_vα(1.1, 1.2, 1.3, 1.4), N-type, P-type/Ca_vα(2.1), Q-type, R-type, T-type, α₂δ-subunits (1, 2), β-subunits (β1, β2, β3, β4), γ-subunits (γ1, γ2, γ3, γ4) Inositol triphosphate receptor • Ryanodine receptor • Cation channels of sperm • Two-pore channel

Na⁺: Sodium channel	Na_vα (1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.9, 7A) • Na_vβ (1, 2, 3, 4) • Epithelial sodium channel

K⁺: Potassium channel	Voltage-gated (K_vα (1.1, 1.2, 1.3, 1.4, 1.5, 2.1, 3.1, 3.4, 4.1, 4.2, 4.3, 6.1, 7.1, 7.2, 7.3, 7.4, 7.5, 9.3, 10.1, 11.1/hERG) • K_vβ (1, 2), Shaker gene, KCNE1) Calcium-activated (BK channel: α1, β1, β2, β3, β4; SK channel: SK1, SK2, SK3, SK4) Inward-rectifier K_ir (1.1, 2.1, 2.2, 2.3, 2.4, GIRK, 3.1, 3.2, 3.3, 3.4, 4.1, 4.2, 5.1, 6.1, 6.2, 7.1) Tandem pore domain K2P (1, 2, 3, 4, 6, 9, 15, 17)

Cl^-: Chloride channel	Cystic fibrosis transmembrane conductance regulator

Porin	Aquaporin (1, 2, 3, 4, 5, 7, 8, 9) • Voltage-dependent anion channel (1)

Cations: TRP	TRPA (1) • TRPC (1, 2, 3, 4, 4AP, 5, 6, 7) • TRPM (1, 2, 3, 4, 5, 6, 7, 8) • TRPML (Mucolipin-1) • TRPP (1, 2) • TRPV (1, 2, 3, 4, 5, 6)

Other/general	Voltage-gated ion channel • Ligand-gated ion channel • Cyclic nucleotide-gated ion channel (α1, α2, α3, β1, β3, H1, H2, H3, H4) • Stretch-activated ion channel