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{{cs1 config|name-list-style=vanc}}
{{DISPLAYTITLE:Na<sub>v</sub>1.2}}
{{Short description|Protein-coding gene in the species Homo sapiens}}
{{DISPLAYTITLE:SCN2A}}
{{Infobox_gene}}
{{Infobox_gene}}


'''Na<sub>v</sub>α1.2''', also known as the '''sodium channel, voltage-gated, type II, alpha subunit''' is a [[protein]] that in humans is encoded by the '''SCN2A''' [[gene]].<ref name="entrez"/> Functional sodium channels contain an ion conductive alpha subunit and one or more regulatory beta subunits. Sodium channels which contain the Na<sub>v</sub>α1.2 subunit are called '''Na<sub>v</sub>1.2''' channels.
'''Sodium channel protein type 2 subunit alpha''', is a [[protein]] that in humans is encoded by the ''SCN2A'' [[gene]].<ref name="entrez"/> Functional [[sodium channel]]s contain an ion conductive alpha subunit and one or more regulatory beta subunits. Sodium channels which contain sodium channel protein type 2 subunit alpha are sometimes called '''Na<sub>v</sub>1.2''' channels.


== Function ==
== Function ==
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== Clinical significance ==
== Clinical significance ==


Mutations in this gene have been implicated in cases of [[autism]],<ref name=Murtha_2012>{{cite journal|last=Sanders SJ|first=Stephan J.|author2=Murtha MT |author3=Gupta AR |author4=Murdoch JR |author5=Raubeson MJ |author6=Willsey AJ |author7=Ercan-Sencicek AG | title = De novo mutations revealed by whole-exome sequencing are strongly associated with autism | journal = Nature | year = 2012 | doi = 10.1038/nature10945 |pmid=22495306|display-authors=etal | volume=485 |issue=7397| pages=237–241|pmc=3667984 }}</ref> [[infantile spasm]]s bitemporal glucose hypometabolism <ref name="pmid23827426">{{cite journal |vauthors=Sundaram SK, Chugani HT, Tiwari VN, Huq AH | title = SCN2A Mutation Is Associated With Infantile Spasms and Bitemporal Glucose Hypometabolism | journal = Pediatr. Neurol. | volume = 49 | issue = 1 | pages = 46–9 |date=July 2013 | pmid = 23827426 | doi = 10.1016/j.pediatrneurol.2013.03.002 | pmc=3868437}}</ref>, and [[bipolar disorder]].<ref name = Stahl_2019>{{cite journal|last=Bipolar Disorder Working Group of the Psychiatric Genomics Consortium| title = Genome-wide association study identifies 30 loci associated with bipolar disorder | journal = Nature Genetics | year = 2019 | doi = 10.1038/s41588-019-0397-8 |pmid= 31043756 |display-authors=etal | volume=51 | issue = 5 | pages=793–803| hdl= 10481/58017 | hdl-access= free | pmc= 6956732 }}</ref>
Mutations in this gene have been implicated in cases of [[autism]],<ref name=Murtha_2012>{{cite journal|last=Sanders SJ|first=Stephan J.|author2=Murtha MT |author3=Gupta AR |author4=Murdoch JR |author5=Raubeson MJ |author6=Willsey AJ |author7=Ercan-Sencicek AG | title = De novo mutations revealed by whole-exome sequencing are strongly associated with autism | journal = Nature | year = 2012 | doi = 10.1038/nature10945 |pmid=22495306|display-authors=etal | volume=485 |issue=7397| pages=237–241|pmc=3667984 |bibcode=2012Natur.485..237S}}</ref> [[infantile spasm]]s, bitemporal glucose hypometabolism,<ref name="pmid23827426">{{cite journal |vauthors=Sundaram SK, Chugani HT, Tiwari VN, Huq AH | title = SCN2A Mutation Is Associated With Infantile Spasms and Bitemporal Glucose Hypometabolism | journal = Pediatr. Neurol. | volume = 49 | issue = 1 | pages = 46–9 |date=July 2013 | pmid = 23827426 | doi = 10.1016/j.pediatrneurol.2013.03.002 | pmc=3868437}}</ref> and [[bipolar disorder]].<ref name = Stahl_2019>{{cite journal|last=Bipolar Disorder Working Group of the Psychiatric Genomics Consortium| title = Genome-wide association study identifies 30 loci associated with bipolar disorder | journal = Nature Genetics | year = 2019 | doi = 10.1038/s41588-019-0397-8 |pmid= 31043756 |display-authors=etal | volume=51 | issue = 5 | pages=793–803| hdl= 10481/58017 | hdl-access= free | pmc= 6956732 }}</ref>


==See also==
==See also==
* [[Sodium channel]]
* [[Paralytic (gene)|''paralytic'']] - SCN2A ortholog in ''Drosophila''
* [[Paralytic (gene)|''paralytic'']] - SCN2A ortholog in ''Drosophila''


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*{{cite journal |vauthors=Catterall WA, Goldin AL, Waxman SG |title=International Union of Pharmacology. XLVII. Nomenclature and structure-function relationships of voltage-gated sodium channels. |journal=Pharmacol. Rev. |volume=57 |issue= 4 |pages= 397–409 |year= 2006 |pmid= 16382098 |doi= 10.1124/pr.57.4.4 |s2cid=7332624 |url=https://semanticscholar.org/paper/2e6f7e97c54bc8cd20f0c9a6efb0deb6f5b5e20b }}
*{{cite journal |vauthors=Catterall WA, Goldin AL, Waxman SG |title=International Union of Pharmacology. XLVII. Nomenclature and structure-function relationships of voltage-gated sodium channels. |journal=Pharmacol. Rev. |volume=57 |issue= 4 |pages= 397–409 |year= 2006 |pmid= 16382098 |doi= 10.1124/pr.57.4.4 |s2cid=7332624 |url=https://semanticscholar.org/paper/2e6f7e97c54bc8cd20f0c9a6efb0deb6f5b5e20b }}
*{{cite journal |vauthors=Lu CM, Han J, Rado TA, Brown GB |title=Differential expression of two sodium channel subtypes in human brain. |journal=FEBS Lett. |volume=303 |issue= 1 |pages= 53–8 |year= 1992 |pmid= 1317301 |doi=10.1016/0014-5793(92)80476-W |s2cid=29330026 }}
*{{cite journal |vauthors=Lu CM, Han J, Rado TA, Brown GB |title=Differential expression of two sodium channel subtypes in human brain. |journal=FEBS Lett. |volume=303 |issue= 1 |pages= 53–8 |year= 1992 |pmid= 1317301 |doi=10.1016/0014-5793(92)80476-W |s2cid=29330026 }}
*{{cite journal |vauthors=Ahmed CM, Ware DH, Lee SC, etal |title=Primary structure, chromosomal localization, and functional expression of a voltage-gated sodium channel from human brain |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=89 |issue= 17 |pages= 8220–4 |year= 1992 |pmid= 1325650 |doi=10.1073/pnas.89.17.8220 | pmc=49889 }}
*{{cite journal |vauthors=Ahmed CM, Ware DH, Lee SC, etal |title=Primary structure, chromosomal localization, and functional expression of a voltage-gated sodium channel from human brain |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=89 |issue= 17 |pages= 8220–4 |year= 1992 |pmid= 1325650 |doi=10.1073/pnas.89.17.8220 | pmc=49889 |bibcode=1992PNAS...89.8220A |doi-access=free }}
*{{cite journal |vauthors=Han JA, Lu CM, Brown GB, Rado TA |title=Direct amplification of a single dissected chromosomal segment by polymerase chain reaction: a human brain sodium channel gene is on chromosome 2q22-q23 |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=88 |issue= 2 |pages= 335–9 |year= 1991 |pmid= 1846440 |doi=10.1073/pnas.88.2.335 | pmc=50805 }}
*{{cite journal |vauthors=Han JA, Lu CM, Brown GB, Rado TA |title=Direct amplification of a single dissected chromosomal segment by polymerase chain reaction: a human brain sodium channel gene is on chromosome 2q22-q23 |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=88 |issue= 2 |pages= 335–9 |year= 1991 |pmid= 1846440 |doi=10.1073/pnas.88.2.335 | pmc=50805 |bibcode=1991PNAS...88..335H |doi-access=free }}
*{{cite journal |vauthors=Litt M, Luty J, Kwak M, etal |title=Localization of a human brain sodium channel gene (SCN2A) to chromosome 2 |journal=Genomics |volume=5 |issue= 2 |pages= 204–8 |year= 1989 |pmid= 2571571 |doi=10.1016/0888-7543(89)90047-5 }}
*{{cite journal |vauthors=Litt M, Luty J, Kwak M, etal |title=Localization of a human brain sodium channel gene (SCN2A) to chromosome 2 |journal=Genomics |volume=5 |issue= 2 |pages= 204–8 |year= 1989 |pmid= 2571571 |doi=10.1016/0888-7543(89)90047-5 }}
*{{cite journal |vauthors=Bonaldo MF, Lennon G, Soares MB |title=Normalization and subtraction: two approaches to facilitate gene discovery |journal=Genome Res. |volume=6 |issue= 9 |pages= 791–806 |year= 1997 |pmid= 8889548 |doi=10.1101/gr.6.9.791 |doi-access=free }}
*{{cite journal |vauthors=Bonaldo MF, Lennon G, Soares MB |title=Normalization and subtraction: two approaches to facilitate gene discovery |journal=Genome Res. |volume=6 |issue= 9 |pages= 791–806 |year= 1997 |pmid= 8889548 |doi=10.1101/gr.6.9.791 |doi-access=free }}
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*{{cite journal |vauthors=Kasai N, Fukushima K, Ueki Y, etal |title=Genomic structures of SCN2A and SCN3A - candidate genes for deafness at the DFNA16 locus |journal=Gene |volume=264 |issue= 1 |pages= 113–22 |year= 2001 |pmid= 11245985 |doi=10.1016/S0378-1119(00)00594-1 }}
*{{cite journal |vauthors=Kasai N, Fukushima K, Ueki Y, etal |title=Genomic structures of SCN2A and SCN3A - candidate genes for deafness at the DFNA16 locus |journal=Gene |volume=264 |issue= 1 |pages= 113–22 |year= 2001 |pmid= 11245985 |doi=10.1016/S0378-1119(00)00594-1 }}
*{{cite journal |vauthors=Malacarne M, Gennaro E, Madia F, etal |title=Benign Familial Infantile Convulsions: Mapping of a Novel Locus on Chromosome 2q24 and Evidence for Genetic Heterogeneity |journal=Am. J. Hum. Genet. |volume=68 |issue= 6 |pages= 1521–6 |year= 2001 |pmid= 11326335 |doi=10.1086/320596 | pmc=1226140 }}
*{{cite journal |vauthors=Malacarne M, Gennaro E, Madia F, etal |title=Benign Familial Infantile Convulsions: Mapping of a Novel Locus on Chromosome 2q24 and Evidence for Genetic Heterogeneity |journal=Am. J. Hum. Genet. |volume=68 |issue= 6 |pages= 1521–6 |year= 2001 |pmid= 11326335 |doi=10.1086/320596 | pmc=1226140 }}
*{{cite journal |vauthors=Sugawara T, Tsurubuchi Y, Agarwala KL, etal |title=A missense mutation of the Na+ channel αII subunit gene Nav1.2 in a patient with febrile and afebrile seizures causes channel dysfunction |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=98 |issue= 11 |pages= 6384–9 |year= 2001 |pmid= 11371648 |doi= 10.1073/pnas.111065098 | pmc=33477 }}
*{{cite journal |vauthors=Sugawara T, Tsurubuchi Y, Agarwala KL, etal |title=A missense mutation of the Na+ channel αII subunit gene Nav1.2 in a patient with febrile and afebrile seizures causes channel dysfunction |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=98 |issue= 11 |pages= 6384–9 |year= 2001 |pmid= 11371648 |doi= 10.1073/pnas.111065098 | pmc=33477 |bibcode=2001PNAS...98.6384S |doi-access=free }}
*{{cite journal |vauthors=Heron SE, Crossland KM, Andermann E, etal |title=Sodium-channel defects in benign familial neonatal-infantile seizures |journal=Lancet |volume=360 |issue= 9336 |pages= 851–2 |year= 2002 |pmid= 12243921 |doi=10.1016/S0140-6736(02)09968-3 |s2cid=6105850 }}
*{{cite journal |vauthors=Heron SE, Crossland KM, Andermann E, etal |title=Sodium-channel defects in benign familial neonatal-infantile seizures |journal=Lancet |volume=360 |issue= 9336 |pages= 851–2 |year= 2002 |pmid= 12243921 |doi=10.1016/S0140-6736(02)09968-3 |s2cid=6105850 }}
*{{cite journal |vauthors=Strausberg RL, Feingold EA, Grouse LH, etal |title=Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=99 |issue= 26 |pages= 16899–903 |year= 2003 |pmid= 12477932 |doi= 10.1073/pnas.242603899 | pmc=139241 }}
*{{cite journal |vauthors=Strausberg RL, Feingold EA, Grouse LH, etal |title=Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=99 |issue= 26 |pages= 16899–903 |year= 2003 |pmid= 12477932 |doi= 10.1073/pnas.242603899 | pmc=139241 |bibcode=2002PNAS...9916899M |doi-access=free }}
*{{cite journal |vauthors=Weiss LA, Escayg A, Kearney JA, etal |title=Sodium channels SCN1A, SCN2A and SCN3A in familial autism |journal=Mol. Psychiatry |volume=8 |issue= 2 |pages= 186–94 |year= 2003 |pmid= 12610651 |doi= 10.1038/sj.mp.4001241 |doi-access= free }}
*{{cite journal |vauthors=Weiss LA, Escayg A, Kearney JA, etal |title=Sodium channels SCN1A, SCN2A and SCN3A in familial autism |journal=Mol. Psychiatry |volume=8 |issue= 2 |pages= 186–94 |year= 2003 |pmid= 12610651 |doi= 10.1038/sj.mp.4001241 |s2cid=16606651 |doi-access= }}
*{{cite journal |vauthors=Yu FH, Westenbroek RE, Silos-Santiago I, etal |title=Sodium channel beta4, a new disulfide-linked auxiliary subunit with similarity to beta2 |journal=J. Neurosci. |volume=23 |issue= 20 |pages= 7577–85 |year= 2003 |pmid= 12930796 |pmc=6740763 |doi= 10.1523/JNEUROSCI.23-20-07577.2003}}
*{{cite journal |vauthors=Yu FH, Westenbroek RE, Silos-Santiago I, etal |title=Sodium channel beta4, a new disulfide-linked auxiliary subunit with similarity to beta2 |journal=J. Neurosci. |volume=23 |issue= 20 |pages= 7577–85 |year= 2003 |pmid= 12930796 |pmc=6740763 |doi= 10.1523/JNEUROSCI.23-20-07577.2003}}
*{{cite journal |vauthors=McEwen DP, Meadows LS, Chen C, etal |title=Sodium channel beta1 subunit-mediated modulation of Nav1.2 currents and cell surface density is dependent on interactions with contactin and ankyrin |journal=J. Biol. Chem. |volume=279 |issue= 16 |pages= 16044–9 |year= 2004 |pmid= 14761957 |doi= 10.1074/jbc.M400856200 |doi-access= free }}
*{{cite journal |vauthors=McEwen DP, Meadows LS, Chen C, etal |title=Sodium channel beta1 subunit-mediated modulation of Nav1.2 currents and cell surface density is dependent on interactions with contactin and ankyrin |journal=J. Biol. Chem. |volume=279 |issue= 16 |pages= 16044–9 |year= 2004 |pmid= 14761957 |doi= 10.1074/jbc.M400856200 |doi-access= free }}
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== External links ==
== External links ==
Patient Organizations

[https://www.scn2afoundation.org/ The SCN2A Foundation]

[https://scn2aaustralia.org SCN2A Asia Pacific]

[https://scn2a.de SCN2A Germany e. V.]

* {{MeshName|SCN2A+protein,+human}}
* {{MeshName|SCN2A+protein,+human}}
* {{PDBe-KB2|Q99250|Sodium channel protein type 2 subunit alpha}}
* {{PDBe-KB2|Q99250|Sodium channel protein type 2 subunit alpha}}

Latest revision as of 01:31, 24 December 2023

SCN2A
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesSCN2A, BFIC3, BFIS3, BFNIS, EIEE11, HBA, HBSCI, HBSCII, NAC2, Na(v)1.2, Nav1.2, SCN2A1, SCN2A2, sodium voltage-gated channel alpha subunit 2, DEE11, EA9
External IDsOMIM: 182390; MGI: 98248; HomoloGene: 75001; GeneCards: SCN2A; OMA:SCN2A - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001040142
NM_001040143
NM_021007
NM_001371246
NM_001371247

NM_001099298
NM_001346679
NM_001346680

RefSeq (protein)

NP_001035232
NP_001035233
NP_066287
NP_001358175
NP_001358176

NP_001092768
NP_001333608
NP_001333609

Location (UCSC)Chr 2: 165.19 – 165.39 MbChr 2: 65.45 – 65.6 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Sodium channel protein type 2 subunit alpha, is a protein that in humans is encoded by the SCN2A gene.[5] Functional sodium channels contain an ion conductive alpha subunit and one or more regulatory beta subunits. Sodium channels which contain sodium channel protein type 2 subunit alpha are sometimes called Nav1.2 channels.

Function

[edit]

Voltage-gated sodium channels are transmembrane glycoprotein complexes composed of a large alpha subunit with four domains including 24 transmembrane segments and one or more regulatory beta subunits. They are responsible for the generation and propagation of action potentials in neurons and muscle. This gene encodes one member of the sodium channel alpha subunit gene family. It is heterogeneously expressed in the brain, and mutations in this gene have been linked to several seizure disorders. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some of these variants has not been determined.[5]

Clinical significance

[edit]

Mutations in this gene have been implicated in cases of autism,[6] infantile spasms, bitemporal glucose hypometabolism,[7] and bipolar disorder.[8]

See also

[edit]

References

[edit]
  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000136531Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000075318Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ a b "Entrez Gene: SCN2A sodium channel, voltage-gated, type II, alpha subunit".
  6. ^ Sanders SJ SJ, Murtha MT, Gupta AR, Murdoch JR, Raubeson MJ, Willsey AJ, Ercan-Sencicek AG, et al. (2012). "De novo mutations revealed by whole-exome sequencing are strongly associated with autism". Nature. 485 (7397): 237–241. Bibcode:2012Natur.485..237S. doi:10.1038/nature10945. PMC 3667984. PMID 22495306.
  7. ^ Sundaram SK, Chugani HT, Tiwari VN, Huq AH (July 2013). "SCN2A Mutation Is Associated With Infantile Spasms and Bitemporal Glucose Hypometabolism". Pediatr. Neurol. 49 (1): 46–9. doi:10.1016/j.pediatrneurol.2013.03.002. PMC 3868437. PMID 23827426.
  8. ^ Bipolar Disorder Working Group of the Psychiatric Genomics Consortium, et al. (2019). "Genome-wide association study identifies 30 loci associated with bipolar disorder". Nature Genetics. 51 (5): 793–803. doi:10.1038/s41588-019-0397-8. hdl:10481/58017. PMC 6956732. PMID 31043756.

Further reading

[edit]
[edit]

Patient Organizations

The SCN2A Foundation

SCN2A Asia Pacific

SCN2A Germany e. V.

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