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External IDsGeneCards: [1]
RefSeq (mRNA)



RefSeq (protein)



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Potassium voltage-gated channel subfamily KQT member 5 is a protein that in humans is encoded by the KCNQ5 gene.[1][2][3][4]

This gene is a member of the KCNQ potassium channel gene family that is differentially expressed in subregions of the brain and in skeletal muscle. The protein encoded by this gene yields currents that activate slowly with depolarization and can form heteromeric channels with the protein encoded by the KCNQ3 gene. Currents expressed from this protein have voltage dependences and inhibitor sensitivities in common with M-currents. They are also inhibited by M1 muscarinic receptor activation. Three alternatively spliced transcript variants encoding distinct isoforms have been found for this gene, but the full-length nature of only one has been determined.[4]


KCNQ5 has been shown to interact with KvLQT3.[5]

See also


  1. Lerche C, Scherer CR, Seebohm G, Derst C, Wei AD, Busch AE, Steinmeyer K (Aug 2000). "Molecular cloning and functional expression of KCNQ5, a potassium channel subunit that may contribute to neuronal M-current diversity". J Biol Chem. 275 (29): 22395–400. doi:10.1074/jbc.M002378200. PMID 10787416.
  2. Schroeder BC, Hechenberger M, Weinreich F, Kubisch C, Jentsch TJ (Sep 2000). "KCNQ5, a novel potassium channel broadly expressed in brain, mediates M-type currents". J Biol Chem. 275 (31): 24089–95. doi:10.1074/jbc.M003245200. PMID 10816588.
  3. Gutman GA, Chandy KG, Grissmer S, Lazdunski M, McKinnon D, Pardo LA, Robertson GA, Rudy B, Sanguinetti MC, Stuhmer W, Wang X (Dec 2005). "International Union of Pharmacology. LIII. Nomenclature and molecular relationships of voltage-gated potassium channels". Pharmacol Rev. 57 (4): 473–508. doi:10.1124/pr.57.4.10. PMID 16382104.
  4. 4.0 4.1 "Entrez Gene: KCNQ5 potassium voltage-gated channel, KQT-like subfamily, member 5".
  5. Yus-Nájera, E; Muñoz A; Salvador N; Jensen B S; Rasmussen H B; Defelipe J; Villarroel A (2003). "Localization of KCNQ5 in the normal and epileptic human temporal neocortex and hippocampal formation". Neuroscience. United States. 120 (2): 353–64. doi:10.1016/S0306-4522(03)00321-X. ISSN 0306-4522. PMID 12890507.

Further reading

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