potassium voltage-gated channel subfamily Q member 3
अंतिम अद्यतन 18 Aug 2020
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यह KCNQ3 gene belongs to a large family of genes that provide instructions for making potassium channels. These channels, which transport positively charged atoms (ions) of potassium into and out of cells, play a key role in a cell's ability to generate and transmit electrical signals.
Normal function
यह KCNQ3 gene belongs to a large family of genes that provide instructions for making potassium channels. These channels, which transport positively charged atoms (ions) of potassium into and out of cells, play a key role in a cell's ability to generate and transmit electrical signals.
The specific function of a potassium channel depends on its protein components and its location in the body. Channels made with the KCNQ3 protein are active in nerve cells (neurons) in the brain, where they transport potassium ions out of cells. These channels transmit a particular type of electrical signal called the M-current, which prevents the neuron from continuing to send signals to other neurons. The M-current ensures that the neuron is not constantly active, or excitable.
Potassium channels are made up of several protein components (subunits). Each channel contains four alpha subunits that form the hole (pore) through which potassium ions move. Four alpha subunits from the KCNQ3 gene can form a channel. However, the KCNQ3 alpha subunits can also interact with alpha subunits from the KCNQ2 gene to form a functional potassium channel, and these channels transmit a much stronger M-current.
Conditions referring to this gene or chromosome
Other names
BFNC2
EBN2
KCNQ3_HUMAN
KV7.3
potassium channel subunit alpha KvLQT3
potassium channel, voltage gated KQT-like subfamily Q, member 3
potassium channel, voltage-gated, subfamily Q, member 3
potassium voltage-gated channel subfamily KQT member 3
potassium voltage-gated channel, KQT-like subfamily, member 3
voltage-gated potassium channel subunit Kv7.3
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अधिक पठन और संदर्भ
- potassium voltage-gated channel subfamily Q member 3; MedlinePlus, National Library of Medicine.
- Chung HJ, Jan YN, Jan LY. Polarized axonal surface expression of neuronal KCNQ channels is mediated by multiple signals in the KCNQ2 and KCNQ3 C-terminal domains. Proc Natl Acad Sci U S A. 2006 Jun 6;103(23):8870-5. doi: 10.1073/pnas.0603376103. Epub 2006 May 30.
- Rogawski MA. KCNQ2/KCNQ3 K+ channels and the molecular pathogenesis of epilepsy: implications for therapy. Trends Neurosci. 2000 Sep;23(9):393-8. doi: 10.1016/s0166-2236(00)01629-5.
- Schroeder BC, Kubisch C, Stein V, Jentsch TJ. Moderate loss of function of cyclic-AMP-modulated KCNQ2/KCNQ3 K+ channels causes epilepsy. Nature. 1998 Dec 17;396(6712):687-90. doi: 10.1038/25367.
- Singh NA, Westenskow P, Charlier C, Pappas C, Leslie J, Dillon J, Anderson VE, Sanguinetti MC, Leppert MF; BFNC Physician Consortium. KCNQ2 and KCNQ3 potassium channel genes in benign familial neonatal convulsions: expansion of the functional and mutation spectrum. Brain. 2003 Dec;126(Pt 12):2726-37. doi: 10.1093/brain/awg286. Epub 2003 Oct 8.
- Soldovieri MV, Miceli F, Bellini G, Coppola G, Pascotto A, Taglialatela M. Correlating the clinical and genetic features of benign familial neonatal seizures (BFNS) with the functional consequences of underlying mutations. Channels (Austin). 2007 Jul-Aug;1(4):228-33. doi: 10.4161/chan.4823. Epub 2007 Aug 2.
- Wang HS, Pan Z, Shi W, Brown BS, Wymore RS, Cohen IS, Dixon JE, McKinnon D. KCNQ2 and KCNQ3 potassium channel subunits: molecular correlates of the M-channel. Science. 1998 Dec 4;282(5395):1890-3. doi: 10.1126/science.282.5395.1890.
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