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CASK

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CASK
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesCASK, CAGH39, CAMGUK, CMG, FGS4, LIN2, MICPCH, MRXSNA, TNRC8, calcium/calmodulin-dependent serine protein kinase (MAGUK family), calcium/calmodulin dependent serine protein kinase, hCASK
External IDsOMIM: 300172; MGI: 1309489; HomoloGene: 2736; GeneCards: CASK; OMA:CASK - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001126054
NM_001126055
NM_003688
NM_001367721

NM_001284503
NM_001284504
NM_001284505
NM_009806

RefSeq (protein)

NP_001119526
NP_001119527
NP_003679
NP_001354650

NP_001271432
NP_001271433
NP_001271434
NP_033936

Location (UCSC)Chr X: 41.51 – 41.92 MbChr X: 13.38 – 13.72 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Peripheral plasma membrane protein CASK is a protein that in humans is encoded by the CASK gene.[5][6] This gene is also known by several other names: CMG 2 (CAMGUK protein 2), calcium/calmodulin-dependent serine protein kinase 3 and membrane-associated guanylate kinase 2. CASK gene mutations are the cause of XL-ID with our without nystagmus and MICPCH, an X-linked neurological disorder.

Gene

This gene is located on the short arm of the X chromosome (Xp11.4). It is 404,253 bases in length and lies on the Crick (minus) strand. The encoded protein has 926 amino acids with a predicted molecular weight of 105,123 Daltons.

Function

This protein is a multidomain scaffolding protein with a role in synaptic transmembrane protein anchoring and ion channel trafficking. It interacts with the transcription factor TBR1 and binds to several cell-surface proteins including neurexins and syndecans.

Clinical importance

This gene has been implicated in X-linked mental retardation,[7] including specifically mental retardation and microcephaly with pontine and cerebellar hypoplasia.[8] The role of CASK in disease is primarily associated with a loss of function (under expression) of the CASK gene as a result of a deletion, missense or splice mutation[9]. It appears that mutations in the gene lead to dimished amounts of the protein being coded. As a result, CASK is unable to form complexes with other proteins leading to a cascade of events. Research has shown there is significant down-regulation of the genes involved in pre-synaptic development and of CASK protein interactors[10].

Males affected by CASK variants tend to have more severe symptoms than females due to the X-linked nature of the disease. These genetic issues are often fatal in the womb for male embryos[11][12] or else lead to infant mortality. Females with CASK mutations have variable phenotypes with moderate to severe intellectual disability. CASK missense mutations and some splice mutations can lead to the milder neurodevelopmental phenotype[12].

CASK related disorders are mainly found in girls. The prevalence is unknown but generally thought to be below 400 cases worldwide. Patients are often born healthy but within the first few months of life show progressive microcephaly. Although there can be prenatal decelaration of head circumference growth, the majority of cases will not be diagnosed according to current recommendations for fetal CNS routine assessment.[13]

The exact mode of pathology is not clear, but evidence from mice models indicates CASK deficiency in neurones causes the following effects[14]:

  • reduced levels of associated proteins such as Mint1[15] and neurexin
  • Higher levels of Neuroligin 1
  • Increased glutamate release at synapses and reduced GABA release affecting the E/I balance in maturing neural circuits[16]
  • Down-regulation of GluN2B resulting in disruption of synaptic E/I balance[17]

Even slight changes in CASK expression in humans leads to dysregulation of the formation of presynapses, especially in inhibitory neurones.[18]

Interactions

CASK has been shown to interact with:

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000147044Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000031012Ensembl, 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. ^ Dimitratos SD, Stathakis DG, Nelson CA, Woods DF, Bryant PJ (Nov 1998). "The location of human CASK at Xp11.4 identifies this gene as a candidate for X-linked optic atrophy". Genomics. 51 (2): 308–309. doi:10.1006/geno.1998.5404. PMID 9722958.
  6. ^ "Entrez Gene: CASK Calcium/calmodulin-dependent serine protein kinase (MAGUK family)".
  7. ^ Tarpey PS, Smith R, Pleasance E, Whibley A, Edkins S, Hardy C, O'Meara S, Latimer C, Dicks E, Menzies A, Stephens P, Blow M, Greenman C, Xue Y, Tyler-Smith C, Thompson D, Gray K, Andrews J, Barthorpe S, Buck G, Cole J, Dunmore R, Jones D, Maddison M, Mironenko T, Turner R, Turrell K, Varian J, West S, Widaa S, Wray P, Teague J, Butler A, Jenkinson A, Jia M, Richardson D, Shepherd R, Wooster R, Tejada MI, Martinez F, Carvill G, Goliath R, de Brouwer AP, van Bokhoven H, Van Esch H, Chelly J, Raynaud M, Ropers HH, Abidi FE, Srivastava AK, Cox J, Luo Y, Mallya U, Moon J, Parnau J, Mohammed S, Tolmie JL, Shoubridge C, Corbett M, Gardner A, Haan E, Rujirabanjerd S, Shaw M, Vandeleur L, Fullston T, Easton DF, Boyle J, Partington M, Hackett A, Field M, Skinner C, Stevenson RE, Bobrow M, Turner G, Schwartz CE, Gecz J, Raymond FL, Futreal PA, Stratton MR (May 2009). "A systematic, large-scale resequencing screen of X-chromosome coding exons in mental retardation". Nat. Genet. 41 (5): 535–43. doi:10.1038/ng.367. PMC 2872007. PMID 19377476.
  8. ^ Burglen L, Chantot-Bastaraud S, Garel C, Milh M, Touraine R, Zanni G, Petit F, Afenjar A, Goizet C, Barresi S, Coussement A, Ioos C, Lazaro L, Joriot S, Desguerre I, Lacombe D, des Portes V, Bertini E, Siffroi JP, de Villemeur TB, Rodriguez D (2012). "Spectrum of pontocerebellar hypoplasia in 13 girls and boys with CASK mutations: confirmation of a recognizable phenotype and first description of a male mosaic patient". Orphanet Journal of Rare Diseases. 7 (18): 18. doi:10.1186/1750-1172-7-18. PMC 3351739. PMID 22452838.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  9. ^ Hackett, Anna; Tarpey, Patrick S; Licata, Andrea; Cox, James; Whibley, Annabel; Boyle, Jackie; Rogers, Carolyn; Grigg, John; Partington, Michael; Stevenson, Roger E; Tolmie, John; Yates, John RW; Turner, Gillian; Wilson, Meredith; Futreal, Andrew P (May 2010). "CASK mutations are frequent in males and cause X-linked nystagmus and variable XLMR phenotypes". European Journal of Human Genetics. 18 (5): 544–552. doi:10.1038/ejhg.2009.220. ISSN 1018-4813. PMC 2987321. PMID 20029458.
  10. ^ Becker, Martin; Mastropasqua, Francesca; Reising, Jan Philipp; Maier, Simon; Ho, Mai-Lan; Rabkina, Ielyzaveta; Li, Danyang; Neufeld, Janina; Ballenberger, Lea; Myers, Lynnea; Moritz, Viveka; Kele, Malin; Wincent, Josephine; Willfors, Charlotte; Sitnikov, Rouslan (2020-09-14). "Presynaptic dysfunction in CASK-related neurodevelopmental disorders". Translational Psychiatry. 10 (1): 1–17. doi:10.1038/s41398-020-00994-0. ISSN 2158-3188.
  11. ^ Najm, Juliane; Horn, Denise; Wimplinger, Isabella; Golden, Jeffrey A.; Chizhikov, Victor V.; Sudi, Jyotsna; Christian, Susan L.; Ullmann, Reinhard; Kuechler, Alma; Haas, Carola A.; Flubacher, Armin; Charnas, Lawrence R.; Uyanik, Gökhan; Frank, Ulrich; Klopocki, Eva (September 2008). "Mutations of CASK cause an X-linked brain malformation phenotype with microcephaly and hypoplasia of the brainstem and cerebellum". Nature Genetics. 40 (9): 1065–1067. doi:10.1038/ng.194. ISSN 1546-1718.
  12. ^ a b Moog, Ute; Bierhals, Tatjana; Brand, Kristina; Bautsch, Jan; Biskup, Saskia; Brune, Thomas; Denecke, Jonas; de Die-Smulders, Christine E.; Evers, Christina; Hempel, Maja; Henneke, Marco; Yntema, Helger; Menten, Björn; Pietz, Joachim; Pfundt, Rolph (2015-04-12). "Phenotypic and molecular insights into CASK-related disorders in males". Orphanet Journal of Rare Diseases. 10 (1): 44. doi:10.1186/s13023-015-0256-3. ISSN 1750-1172. PMC 4449965. PMID 25886057.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  13. ^ Gafner, Michal; Boltshauser, Eugen; D'Abrusco, Fulvio; Battini, Roberta; Romaniello, Romina; D'Arrigo, Stefano; Zanni, Ginevra; Leibovitz, Zvi; Yosovich, Keren; Lerman-Sagie, Tally; Cask Study Group* (2022-09-29). "Expanding the natural history of CASK-related disorders to the prenatal period". Developmental Medicine and Child Neurology. doi:10.1111/dmcn.15419. ISSN 1469-8749. PMID 36175354.
  14. ^ Atasoy, Deniz; Schoch, Susanne; Ho, Angela; Nadasy, Krisztina A.; Liu, Xinran; Zhang, Weiqi; Mukherjee, Konark; Nosyreva, Elena D.; Fernandez-Chacon, Rafael; Missler, Markus; Kavalali, Ege T.; Südhof, Thomas C. (2007-02-13). "Deletion of CASK in mice is lethal and impairs synaptic function". Proceedings of the National Academy of Sciences. 104 (7): 2525–2530. doi:10.1073/pnas.0611003104. ISSN 0027-8424. PMC 1892970. PMID 17287346.
  15. ^ Butz, Stefan; Okamoto, Masaya; Südhof, Thomas C. (1998-09-18). "A Tripartite Protein Complex with the Potential to Couple Synaptic Vesicle Exocytosis to Cell Adhesion in Brain". Cell. 94 (6): 773–782. doi:10.1016/S0092-8674(00)81736-5. ISSN 0092-8674.
  16. ^ Saitsu, Hirotomo; Kato, Mitsuhiro; Mizuguchi, Takeshi; Hamada, Keisuke; Osaka, Hitoshi; Tohyama, Jun; Uruno, Katsuhisa; Kumada, Satoko; Nishiyama, Kiyomi; Nishimura, Akira; Okada, Ippei; Yoshimura, Yukiko; Hirai, Syu-ichi; Kumada, Tatsuro; Hayasaka, Kiyoshi (June 2008). "De novo mutations in the gene encoding STXBP1 (MUNC18-1) cause early infantile epileptic encephalopathy". Nature Genetics. 40 (6): 782–788. doi:10.1038/ng.150. ISSN 1546-1718. PMID 18469812.
  17. ^ Mori, Takuma; Kasem, Enas A.; Suzuki-Kouyama, Emi; Cao, Xueshan; Li, Xue; Kurihara, Taiga; Uemura, Takeshi; Yanagawa, Toru; Tabuchi, Katsuhiko (July 2019). "Deficiency of calcium/calmodulin-dependent serine protein kinase disrupts the excitatory-inhibitory balance of synapses by down-regulating GluN2B". Molecular Psychiatry. 24 (7): 1079–1092. doi:10.1038/s41380-018-0338-4. ISSN 1476-5578.
  18. ^ Becker, Martin; Mastropasqua, Francesca; Reising, Jan Philipp; Maier, Simon; Ho, Mai-Lan; Rabkina, Ielyzaveta; Li, Danyang; Neufeld, Janina; Ballenberger, Lea; Myers, Lynnea; Moritz, Viveka; Kele, Malin; Wincent, Josephine; Willfors, Charlotte; Sitnikov, Rouslan (2020-09-14). "Presynaptic dysfunction in CASK-related neurodevelopmental disorders". Translational Psychiatry. 10 (1): 1–17. doi:10.1038/s41398-020-00994-0. ISSN 2158-3188.
  19. ^ a b Leonoudakis D, Conti LR, Anderson S, Radeke CM, McGuire LM, Adams ME, Froehner SC, Yates JR, Vandenberg CA (May 2004). "Protein trafficking and anchoring complexes revealed by proteomic analysis of inward rectifier potassium channel (Kir2.x)-associated proteins". J. Biol. Chem. 279 (21): 22331–46. doi:10.1074/jbc.M400285200. PMID 15024025.
  20. ^ a b c d Leonoudakis D, Conti LR, Radeke CM, McGuire LM, Vandenberg CA (April 2004). "A multiprotein trafficking complex composed of SAP97, CASK, Veli, and Mint1 is associated with inward rectifier Kir2 potassium channels". J. Biol. Chem. 279 (18): 19051–63. doi:10.1074/jbc.M400284200. PMID 14960569.
  21. ^ a b Borg JP, Straight SW, Kaech SM, de Taddéo-Borg M, Kroon DE, Karnak D, Turner RS, Kim SK, Margolis B (November 1998). "Identification of an evolutionarily conserved heterotrimeric protein complex involved in protein targeting". J. Biol. Chem. 273 (48): 31633–6. doi:10.1074/jbc.273.48.31633. PMID 9822620.
  22. ^ Borg JP, Lõpez-Figueroa MO, de Taddèo-Borg M, Kroon DE, Turner RS, Watson SJ, Margolis B (February 1999). "Molecular analysis of the X11-mLin-2/CASK complex in brain". J. Neurosci. 19 (4): 1307–16. doi:10.1523/JNEUROSCI.19-04-01307.1999. PMC 6786035. PMID 9952408.
  23. ^ Schuh K, Uldrijan S, Gambaryan S, Roethlein N, Neyses L (March 2003). "Interaction of the plasma membrane Ca2+ pump 4b/CI with the Ca2+/calmodulin-dependent membrane-associated kinase CASK". J. Biol. Chem. 278 (11): 9778–83. doi:10.1074/jbc.M212507200. PMID 12511555.
  24. ^ Wang GS, Hong CJ, Yen TY, Huang HY, Ou Y, Huang TN, Jung WG, Kuo TY, Sheng M, Wang TF, Hsueh YP (April 2004). "Transcriptional modification by a CASK-interacting nucleosome assembly protein". Neuron. 42 (1): 113–28. doi:10.1016/S0896-6273(04)00139-4. PMID 15066269.
  25. ^ a b Chetkovich DM, Bunn RC, Kuo SH, Kawasaki Y, Kohwi M, Bredt DS (August 2002). "Postsynaptic targeting of alternative postsynaptic density-95 isoforms by distinct mechanisms". J. Neurosci. 22 (15): 6415–25. doi:10.1523/JNEUROSCI.22-15-06415.2002. PMC 6758133. PMID 12151521.
  26. ^ Nix SL, Chishti AH, Anderson JM, Walther Z (December 2000). "hCASK and hDlg associate in epithelia, and their src homology 3 and guanylate kinase domains participate in both intramolecular and intermolecular interactions". J. Biol. Chem. 275 (52): 41192–200. doi:10.1074/jbc.M002078200. PMID 10993877.
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Further reading