KCNJ5
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| Location (UCSC) | Chr 11: 128.89 – 128.92 Mb | Chr 9: 32.23 – 32.26 Mb | |||||||
| PubMed search | [3] | [4] | |||||||
| View/Edit Human | View/Edit Mouse |
G protein-activated inward rectifier potassium channel 4 (GIRK-4) is a protein that in humans is encoded by the KCNJ5 gene and is a type of G protein-gated ion channel.[5][6]
Function
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. The encoded protein, which has a greater tendency to allow potassium to flow into a cell rather than out of a cell, is controlled by G-proteins. It may associate with other G-protein-activated potassium channel subunits to form a heterotetrameric pore-forming complex.[6]
In humans KCNJ5 is mainly expressed in adrenal gland and pituitary, although it is also detected at low levels in pancreas, spleen, lung, heart and brain.[7] Consistent with this expression pattern, mutations in KCNJ5/Kir3.4 can cause familial hyperaldosteronism type III and a type of long QT syndrome.[8]
Interactions
KCNJ5 has been shown to
See also
- G protein-coupled inwardly-rectifying potassium channel
- Inward-rectifier potassium ion channel
References
- ^ a b c GRCh38: Ensembl release 89: ENSG00000120457 – Ensembl, May 2017
- ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000032034 – 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.
- S2CID 11588492.
- ^ a b "Entrez Gene: KCNJ5 potassium inwardly-rectifying channel, subfamily J, member 5".
- ^ "Gtexportal". GETEX portal.
- ^ Online Mendelian Inheritance in Man (OMIM): potassium channel, inwardly rectifying, subfamily j, member 5; KCNJ5 - 600734
- S2CID 44072628.
- PMID 11741896.
Further reading
- Zhuo ML, Huang Y, Liu DP, Liang CC (April 2005). "KATP channel: relation with cell metabolism and role in the cardiovascular system". The International Journal of Biochemistry & Cell Biology. 37 (4): 751–64. PMID 15694835.
- Tucker SJ, James MR, Adelman JP (July 1995). "Assignment of KATP-1, the cardiac ATP-sensitive potassium channel gene (KCNJ5), to human chromosome 11q24". Genomics. 28 (1): 127–8. PMID 7590741.
- Ashford ML, Bond CT, Blair TA, Adelman JP (1996). "Cloning and functional expression of a rat heart KATP channel". Nature. 378 (6559): 792. PMID 8524415.
- Spauschus A, Lentes KU, Wischmeyer E, Dissmann E, Karschin C, Karschin A (February 1996). "A G-protein-activated inwardly rectifying K+ channel (GIRK4) from human hippocampus associates with other GIRK channels". The Journal of Neuroscience. 16 (3): 930–8. PMID 8558261.
- Iizuka M, Kubo Y, Tsunenari I, Pan CX, Akiba I, Kono T (1996). "Functional characterization and localization of a cardiac-type inwardly rectifying K+ channel". Receptors & Channels. 3 (4): 299–315. PMID 8834003.
- Chan KW, Langan MN, Sui JL, Kozak JA, Pabon A, Ladias JA, Logothetis DE (March 1996). "A recombinant inwardly rectifying potassium channel coupled to GTP-binding proteins". The Journal of General Physiology. 107 (3): 381–97. PMID 8868049.
- Huang CL, Jan YN, Jan LY (April 1997). "Binding of the G protein betagamma subunit to multiple regions of G protein-gated inward-rectifying K+ channels". FEBS Letters. 405 (3): 291–8. S2CID 44072628.
- Kanzaki M, Lindorfer MA, Garrison JC, Kojima I (June 1997). "Activation of the calcium-permeable cation channel CD20 by alpha subunits of the Gi protein". The Journal of Biological Chemistry. 272 (23): 14733–9. PMID 9169438.
- Wischmeyer E, Döring F, Wischmeyer E, Spauschus A, Thomzig A, Veh R, Karschin A (1997). "Subunit interactions in the assembly of neuronal Kir3.0 inwardly rectifying K+ channels". Molecular and Cellular Neurosciences. 9 (3): 194–206. S2CID 8455396.
- Krapivinsky G, Kennedy ME, Nemec J, Medina I, Krapivinsky L, Clapham DE (July 1998). "Gbeta binding to GIRK4 subunit is critical for G protein-gated K+ channel activation". The Journal of Biological Chemistry. 273 (27): 16946–52. PMID 9642257.
- Corey S, Clapham DE (October 1998). "Identification of native atrial G-protein-regulated inwardly rectifying K+ (GIRK4) channel homomultimers". The Journal of Biological Chemistry. 273 (42): 27499–504. PMID 9765280.
- Kennedy ME, Nemec J, Corey S, Wickman K, Clapham DE (January 1999). "GIRK4 confers appropriate processing and cell surface localization to G-protein-gated potassium channels". The Journal of Biological Chemistry. 274 (4): 2571–82. PMID 9891030.
- Schoots O, Wilson JM, Ethier N, Bigras E, Hebert TE, Van Tol HH (December 1999). "Co-expression of human Kir3 subunits can yield channels with different functional properties". Cellular Signalling. 11 (12): 871–83. PMID 10659995.
- He C, Yan X, Zhang H, Mirshahi T, Jin T, Huang A, Logothetis DE (February 2002). "Identification of critical residues controlling G protein-gated inwardly rectifying K(+) channel activity through interactions with the beta gamma subunits of G proteins". The Journal of Biological Chemistry. 277 (8): 6088–96. PMID 11741896.
- Ma D, Zerangue N, Raab-Graham K, Fried SR, Jan YN, Jan LY (February 2002). "Diverse trafficking patterns due to multiple traffic motifs in G protein-activated inwardly rectifying potassium channels from brain and heart". Neuron. 33 (5): 715–29. S2CID 10459917.
- Lavine N, Ethier N, Oak JN, Pei L, Liu F, Trieu P, Rebois RV, Bouvier M, Hebert TE, Van Tol HH (November 2002). "G protein-coupled receptors form stable complexes with inwardly rectifying potassium channels and adenylyl cyclase". The Journal of Biological Chemistry. 277 (48): 46010–9. PMID 12297500.
- Shankar H, Murugappan S, Kim S, Jin J, Ding Z, Wickman K, Kunapuli SP (September 2004). "Role of G protein-gated inwardly rectifying potassium channels in P2Y12 receptor-mediated platelet functional responses". Blood. 104 (5): 1335–43. PMID 15142872.
External links
- KCNJ5+protein,+human at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
- GTEX portal: KCNJ5 expression in human tissue
This article incorporates text from the United States National Library of Medicine, which is in the public domain.