KCND2: Difference between revisions

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'''KCND2''' is a gene that encodes the protein Kv4.2 in humans. Kv4.2 is a voltage-gated potassium channel that plays a crucial role in the regulation of neuronal excitability, particularly in the brain. The KCND2 gene is located on chromosome 7.
 
{{Infobox gene
| name = KCND2
| symbol = KCND2
| HGNCid = 6234
| chromosome = 7
| arm = q
| band = 31.32
}}
 
'''KCND2''' is a gene that encodes a protein known as potassium voltage-gated channel subfamily D member 2. This protein is part of the [[voltage-gated potassium channel]] family, which plays a crucial role in the electrical excitability of [[neurons]] and [[cardiac myocytes]].


== Function ==
== Function ==
The [[protein]] Kv4.2, encoded by the KCND2 gene, is a member of the potassium channel, voltage-gated, shal-related subfamily. These channels are known to significantly influence the properties of neuronal [[action potentials]]. Kv4.2 channels are primarily responsible for the A-type current in neurons, a rapidly inactivating current that helps to regulate the frequency of action potentials.
The KCND2 gene product is involved in the formation of the transient outward potassium current (I<sub>to</sub>), which is important for the repolarization phase of the [[action potential]] in neurons and cardiac cells. This current helps to regulate the duration of the action potential and the frequency of [[neuronal firing]].


== Clinical Significance ==
== Clinical Significance ==
Mutations in the KCND2 gene have been associated with various neurological disorders. For instance, a mutation in this gene has been linked to [[epilepsy]], a neurological disorder characterized by recurrent seizures. Additionally, alterations in the expression of the KCND2 gene have been implicated in the pathogenesis of [[schizophrenia]] and [[bipolar disorder]].
Mutations or dysregulation of the KCND2 gene can lead to various [[neurological disorders]] and [[cardiac arrhythmias]]. Research has shown that alterations in KCND2 expression or function may be associated with conditions such as [[epilepsy]], [[ataxia]], and [[Brugada syndrome]].


== Research ==
== Expression ==
Research into the KCND2 gene and its encoded protein, Kv4.2, is ongoing. Understanding the precise role of this gene in neuronal function and in various neurological disorders could potentially lead to the development of new therapeutic strategies.
KCND2 is predominantly expressed in the [[central nervous system]], particularly in the [[cerebral cortex]], [[hippocampus]], and [[cerebellum]]. It is also expressed in the [[heart]], where it contributes to the cardiac action potential.


[[File:KCND2 gene location on human chromosome 7.png|thumb|right|300px|Location of the KCND2 gene on human chromosome 7.]]
== Interactions ==
KCND2 interacts with several auxiliary subunits and proteins that modulate its function. These include [[KChIP]] proteins, which enhance the surface expression and stability of the channel, and [[DPP6]] and [[DPP10]], which modulate the kinetics and voltage dependence of the channel.


== See Also ==
== See Also ==
* [[Voltage-gated potassium channel]]
* [[Voltage-gated potassium channel]]
* [[Action potential]]
* [[Action potential]]
* [[Neuron]]
* [[Neuronal excitability]]
* [[Epilepsy]]
* [[Cardiac electrophysiology]]
* [[Schizophrenia]]
* [[Bipolar disorder]]


== References ==
== References ==
<references />
{{Reflist}}
 
== External Links ==
* [https://www.ncbi.nlm.nih.gov/gene/3751 KCND2 Gene - NCBI]
* [https://www.genecards.org/cgi-bin/carddisp.pl?gene=KCND2 KCND2 Gene - GeneCards]


[[Category:Genes]]
[[Category:Genes on human chromosome 7]]
[[Category:Neurology]]
[[Category:Ion channels]]
[[Category:Potassium channels]]
[[Category:Neuroscience]]
{{medicine-stub}}
[[Category:Cardiology]]

Latest revision as of 20:21, 30 December 2024


KCND2
Symbol KCND2
HGNC ID 6234
Alternative symbols
Entrez Gene
OMIM
RefSeq
UniProt
Chromosome 7q31.32
Locus supplementary data


KCND2 is a gene that encodes a protein known as potassium voltage-gated channel subfamily D member 2. This protein is part of the voltage-gated potassium channel family, which plays a crucial role in the electrical excitability of neurons and cardiac myocytes.

Function[edit]

The KCND2 gene product is involved in the formation of the transient outward potassium current (Ito), which is important for the repolarization phase of the action potential in neurons and cardiac cells. This current helps to regulate the duration of the action potential and the frequency of neuronal firing.

Clinical Significance[edit]

Mutations or dysregulation of the KCND2 gene can lead to various neurological disorders and cardiac arrhythmias. Research has shown that alterations in KCND2 expression or function may be associated with conditions such as epilepsy, ataxia, and Brugada syndrome.

Expression[edit]

KCND2 is predominantly expressed in the central nervous system, particularly in the cerebral cortex, hippocampus, and cerebellum. It is also expressed in the heart, where it contributes to the cardiac action potential.

Interactions[edit]

KCND2 interacts with several auxiliary subunits and proteins that modulate its function. These include KChIP proteins, which enhance the surface expression and stability of the channel, and DPP6 and DPP10, which modulate the kinetics and voltage dependence of the channel.

See Also[edit]

References[edit]

<references group="" responsive="1"></references>


External Links[edit]