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'''CASPR''' also known as '''Contactin associated protein 1''', '''Paranodin''' and '''CASPR1''' is a [[protein]] that in humans is encoded by the CNTNAP1 [[gene]].<ref name="entrez">{{cite web | title = Entrez Gene: Contactin associated protein 1 | url = https://www.ncbi.nlm.nih.gov/gene/8506 }}</ref> | '''CASPR''' also known as '''Contactin associated protein 1''', '''Paranodin''' and '''CASPR1''' is a [[protein]] that in humans is encoded by the CNTNAP1 [[gene]].<ref name="entrez">{{cite web | title = Entrez Gene: Contactin associated protein 1 | url = https://www.ncbi.nlm.nih.gov/gene/8506 }}</ref> | ||
CASPR is a part of the [[neurexin]] family of proteins, hence its another name "'''Neurexin IV'''".<ref>{{Cite web|url=https://omim.org/entry/602346|title=OMIM Entry- * 602346 - CONTACTIN-ASSOCIATED PROTEIN 1; CNTNAP1|website=omim.org|language=en-us|access-date=2017-04-27}}</ref> CASPR is a membrane protein found in the neuronal membrane in the [[paranodal]] section of the axon in [[myelinated]] neurons, between the [[Nodes of Ranvier]] containing Na+ channels, and juxtaparanode, which contains K+ channels.<ref name="ref1">{{cite journal|url=http://www.jneurosci.org/content/20/22/8354|title=Contactin-Associated Protein (Caspr) and Contactin Form a Complex That Is Targeted to the Paranodal Junctions during Myelination|first1=Jose C.|last1=Rios|first2=Carmen V.|last2=Melendez-Vasquez|first3=Steven|last3=Einheber|first4=Marc|last4=Lustig|first5=Martin|last5=Grumet|first6=John|last6=Hemperly|first7=Elior|last7=Peles|first8=James L.|last8=Salzer|date=15 November 2000|publisher=|journal=J. Neurosci.|volume=20|issue=22|pages=8354–8364|via=www.jneurosci.org|pmid=11069942}}</ref> During myelination, caspr associates with contactin in a ''cis'' complex,<ref name="ref1"/> though its precise role in myelination is not yet understood. | CASPR is a part of the [[neurexin]] family of proteins, hence its another name "'''Neurexin IV'''".<ref>{{Cite web|url=https://omim.org/entry/602346|title=OMIM Entry- * 602346 - CONTACTIN-ASSOCIATED PROTEIN 1; CNTNAP1|website=omim.org|language=en-us|access-date=2017-04-27}}</ref> CASPR is a membrane protein found in the neuronal membrane in the [[paranodal]] section of the axon in [[myelinated]] neurons, between the [[Nodes of Ranvier]] containing Na+ channels, and juxtaparanode, which contains K+ channels.<ref name="ref1">{{cite journal|url=http://www.jneurosci.org/content/20/22/8354|title=Contactin-Associated Protein (Caspr) and Contactin Form a Complex That Is Targeted to the Paranodal Junctions during Myelination|first1=Jose C.|last1=Rios|first2=Carmen V.|last2=Melendez-Vasquez|first3=Steven|last3=Einheber|first4=Marc|last4=Lustig|first5=Martin|last5=Grumet|first6=John|last6=Hemperly|first7=Elior|last7=Peles|first8=James L.|last8=Salzer|date=15 November 2000|publisher=|journal=J. Neurosci.|volume=20|issue=22|pages=8354–8364|via=www.jneurosci.org|pmid=11069942}}</ref> During myelination, caspr associates with contactin in a ''cis'' complex,<ref name="ref1"/> though its precise role in myelination is not yet understood. | ||
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== References == | == References == | ||
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== Further reading == | == Further reading == | ||
{{refbegin | 2}} | {{refbegin | 2}} | ||
* {{cite journal | vauthors = Martins-de-Souza D, Guest PC, Mann DM, Roeber S, Rahmoune H, Bauder C, Kretzschmar H, Volk B, Baborie A, Bahn S | title = Proteomic analysis identifies dysfunction in cellular transport, energy, and protein metabolism in different brain regions of atypical frontotemporal lobar degeneration | journal = Journal of Proteome Research | volume = 11 | issue = 4 | pages = 2533–43 | date = April 2012 | pmid = 22360420 | doi = 10.1021/pr2012279 }} | * {{cite journal | vauthors = Martins-de-Souza D, Guest PC, Mann DM, Roeber S, Rahmoune H, Bauder C, Kretzschmar H, Volk B, Baborie A, Bahn S | title = Proteomic analysis identifies dysfunction in cellular transport, energy, and protein metabolism in different brain regions of atypical frontotemporal lobar degeneration | journal = Journal of Proteome Research | volume = 11 | issue = 4 | pages = 2533–43 | date = April 2012 | pmid = 22360420 | doi = 10.1021/pr2012279 }} | ||
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* {{cite journal | vauthors = Charles P, Tait S, Faivre-Sarrailh C, Barbin G, Gunn-Moore F, Denisenko-Nehrbass N, Guennoc AM, Girault JA, Brophy PJ, Lubetzki C | title = Neurofascin is a glial receptor for the paranodin/Caspr-contactin axonal complex at the axoglial junction | journal = Current Biology | volume = 12 | issue = 3 | pages = 217–20 | date = February 2002 | pmid = 11839274 | doi = 10.1016/S0960-9822(01)00680-7 }} | * {{cite journal | vauthors = Charles P, Tait S, Faivre-Sarrailh C, Barbin G, Gunn-Moore F, Denisenko-Nehrbass N, Guennoc AM, Girault JA, Brophy PJ, Lubetzki C | title = Neurofascin is a glial receptor for the paranodin/Caspr-contactin axonal complex at the axoglial junction | journal = Current Biology | volume = 12 | issue = 3 | pages = 217–20 | date = February 2002 | pmid = 11839274 | doi = 10.1016/S0960-9822(01)00680-7 }} | ||
* {{cite journal | vauthors = Nie DY, Zhou ZH, Ang BT, Teng FY, Xu G, Xiang T, Wang CY, Zeng L, Takeda Y, Xu TL, Ng YK, Faivre-Sarrailh C, Popko B, Ling EA, Schachner M, Watanabe K, Pallen CJ, Tang BL, Xiao ZC | title = Nogo-A at CNS paranodes is a ligand of Caspr: possible regulation of K(+) channel localization | journal = The EMBO Journal | volume = 22 | issue = 21 | pages = 5666–78 | date = November 2003 | pmid = 14592966 | pmc = 275427 | doi = 10.1093/emboj/cdg570 }} | * {{cite journal | vauthors = Nie DY, Zhou ZH, Ang BT, Teng FY, Xu G, Xiang T, Wang CY, Zeng L, Takeda Y, Xu TL, Ng YK, Faivre-Sarrailh C, Popko B, Ling EA, Schachner M, Watanabe K, Pallen CJ, Tang BL, Xiao ZC | title = Nogo-A at CNS paranodes is a ligand of Caspr: possible regulation of K(+) channel localization | journal = The EMBO Journal | volume = 22 | issue = 21 | pages = 5666–78 | date = November 2003 | pmid = 14592966 | pmc = 275427 | doi = 10.1093/emboj/cdg570 }} | ||
{{refend}} | |||
{{ | ==External links== | ||
* {{UCSC gene info|CNTNAP1}} | |||
{{NLM content}} | {{NLM content}} | ||
Latest revision as of 09:07, 4 January 2019
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CASPR also known as Contactin associated protein 1, Paranodin and CASPR1 is a protein that in humans is encoded by the CNTNAP1 gene.[1] CASPR is a part of the neurexin family of proteins, hence its another name "Neurexin IV".[2] CASPR is a membrane protein found in the neuronal membrane in the paranodal section of the axon in myelinated neurons, between the Nodes of Ranvier containing Na+ channels, and juxtaparanode, which contains K+ channels.[3] During myelination, caspr associates with contactin in a cis complex,[3] though its precise role in myelination is not yet understood.
Function
The gene product was initially identified as a 190-kD protein associated with the contactin-PTPRZ1 complex. The 1,384-amino acid protein, also designated p190 or CASPR for 'contactin-associated protein,' includes an extracellular domain with several putative protein-protein interaction domains, a putative transmembrane domain, and a 74-amino acid cytoplasmic domain. Northern blot analysis showed that the gene is transcribed predominantly in brain as a transcript of 6.2 kb, with weak expression in several other tissues tested. The architecture of its extracellular domain is similar to that of neurexins, and this protein may be the signaling subunit of contactin, enabling recruitment and activation of intracellular signaling pathways in neurons. [provided by RefSeq, Jan 2009].
Mutations in CNTNAP1 cause arthrogryposis multiplex congenita .[4]
References
- ↑ "Entrez Gene: Contactin associated protein 1".
- ↑ "OMIM Entry- * 602346 - CONTACTIN-ASSOCIATED PROTEIN 1; CNTNAP1". omim.org. Retrieved 2017-04-27.
- ↑ 3.0 3.1 Rios, Jose C.; Melendez-Vasquez, Carmen V.; Einheber, Steven; Lustig, Marc; Grumet, Martin; Hemperly, John; Peles, Elior; Salzer, James L. (15 November 2000). "Contactin-Associated Protein (Caspr) and Contactin Form a Complex That Is Targeted to the Paranodal Junctions during Myelination". J. Neurosci. 20 (22): 8354–8364. PMID 11069942 – via www.jneurosci.org.
- ↑ Laquérriere A, Maluenda J, Camus A, Fontenas L, Dieterich K, Nolent F, et al. (May 2014). "Mutations in CNTNAP1 and ADCY6 are responsible for severe arthrogryposis multiplex congenita with axoglial defects". Human Molecular Genetics. 23 (9): 2279–89. doi:10.1093/hmg/ddt618. PMID 24319099.
Further reading
- Martins-de-Souza D, Guest PC, Mann DM, Roeber S, Rahmoune H, Bauder C, Kretzschmar H, Volk B, Baborie A, Bahn S (April 2012). "Proteomic analysis identifies dysfunction in cellular transport, energy, and protein metabolism in different brain regions of atypical frontotemporal lobar degeneration". Journal of Proteome Research. 11 (4): 2533–43. doi:10.1021/pr2012279. PMID 22360420.
- Velez Edwards DR, Naj AC, Monda K, North KE, Neuhouser M, Magvanjav O, Kusimo I, Vitolins MZ, Manson JE, O'Sullivan MJ, Rampersaud E, Edwards TL (March 2013). "Gene-environment interactions and obesity traits among postmenopausal African-American and Hispanic women in the Women's Health Initiative SHARe Study". Human Genetics. 132 (3): 323–36. doi:10.1007/s00439-012-1246-3. PMC 3704217. PMID 23192594.
- Li R, Zhang B, Zheng Y (December 1997). "Structural determinants required for the interaction between Rho GTPase and the GTPase-activating domain of p190". The Journal of Biological Chemistry. 272 (52): 32830–5. doi:10.1074/jbc.272.52.32830. PMID 9407060.
- Lee JY, Park AK, Lee KM, Park SK, Han S, Han W, Noh DY, Yoo KY, Kim H, Chanock SJ, Rothman N, Kang D (September 2009). "Candidate gene approach evaluates association between innate immunity genes and breast cancer risk in Korean women". Carcinogenesis. 30 (9): 1528–31. doi:10.1093/carcin/bgp084. PMID 19372141.
- Peles E, Nativ M, Lustig M, Grumet M, Schilling J, Martinez R, Plowman GD, Schlessinger J (March 1997). "Identification of a novel contactin-associated transmembrane receptor with multiple domains implicated in protein-protein interactions". The EMBO Journal. 16 (5): 978–88. doi:10.1093/emboj/16.5.978. PMC 1169698. PMID 9118959.
- Hur JY, Teranishi Y, Kihara T, Yamamoto NG, Inoue M, Hosia W, Hashimoto M, Winblad B, Frykman S, Tjernberg LO (April 2012). "Identification of novel γ-secretase-associated proteins in detergent-resistant membranes from brain". The Journal of Biological Chemistry. 287 (15): 11991–2005. doi:10.1074/jbc.M111.246074. PMC 3320946. PMID 22315232.
- Venken K, Meuleman J, Irobi J, Ceuterick C, Martini R, De Jonghe P, Timmerman V (August 2001). "Caspr1/Paranodin/Neurexin IV is most likely not a common disease-causing gene for inherited peripheral neuropathies". NeuroReport. 12 (11): 2609–14. doi:10.1097/00001756-200108080-00063. PMID 11496158.
- Charles P, Tait S, Faivre-Sarrailh C, Barbin G, Gunn-Moore F, Denisenko-Nehrbass N, Guennoc AM, Girault JA, Brophy PJ, Lubetzki C (February 2002). "Neurofascin is a glial receptor for the paranodin/Caspr-contactin axonal complex at the axoglial junction". Current Biology. 12 (3): 217–20. doi:10.1016/S0960-9822(01)00680-7. PMID 11839274.
- Nie DY, Zhou ZH, Ang BT, Teng FY, Xu G, Xiang T, Wang CY, Zeng L, Takeda Y, Xu TL, Ng YK, Faivre-Sarrailh C, Popko B, Ling EA, Schachner M, Watanabe K, Pallen CJ, Tang BL, Xiao ZC (November 2003). "Nogo-A at CNS paranodes is a ligand of Caspr: possible regulation of K(+) channel localization". The EMBO Journal. 22 (21): 5666–78. doi:10.1093/emboj/cdg570. PMC 275427. PMID 14592966.
External links
- Human CNTNAP1 genome location and CNTNAP1 gene details page in the UCSC Genome Browser.
This article incorporates text from the United States National Library of Medicine, which is in the public domain.
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