- Daftar gen penyandi protein pada manusia/2
- KCNC2
- Voltage-gated potassium channel
- List of human protein-coding genes 2
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- TCF7L2
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KCNC2 GudangMovies21 Rebahinxxi LK21
Potassium voltage-gated channel subfamily C member 2 is a protein that in humans is encoded by the KCNC2 gene. The protein encoded by this gene is a voltage-gated potassium channel subunit (Kv3.2).
Expression pattern
Kv3.1 and Kv3.2 channels are prominently expressed in neurons that fire at high frequency. Kv3.2 channels are prominently expressed in brain (fast-spiking GABAergic interneurons of the neocortex, hippocampus, and caudate nucleus; terminal fields of thalamocortical projections), and in retinal ganglion cells.
Physiological role
Kv3.1/Kv3.2 conductance is necessary and kinetically optimized for high-frequency action potential generation. Sometimes in heteromeric complexes with Kv3.1; important for the high-frequency firing of fast spiking GABAergic interneurons and retinal ganglion cells; and GABA release via regulation of action potential duration in presynaptic terminals.
Pharmacological properties
Kv3.2 currents in heterologous systems are highly sensitive to external tetraethylammonium (TEA) or 4-aminopyridine (4-AP) (IC50 values are 0.1 mM for both of the drugs). This can be useful in identifying native channels.
Transcript variants
There are four transcript variants of Kv3.2 gene: Kv3.2a, Kv3.2b, Kv3.2c, Kv3.2d. Kv3.2 isoforms differ only in their C-terminal sequence.
References
External links
Kv3.2+Potassium+Channel at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
KCNC2+protein,+human at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
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