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Gamma-aminobutyric acid (GABA) A receptor, gamma 2
Symbols GABRG2; CAE2; ECA2; GEFSP3
External IDs OMIM137164 MGI95623 HomoloGene22443 GeneCards: GABRG2 Gene
RNA expression pattern
PBB GE GABRG2 206849 at tn.png
More reference expression data
Species Human Mouse
Entrez 2566 14406
Ensembl ENSG00000113327 ENSMUSG00000020436
UniProt P18507 Q5SUZ1
RefSeq (mRNA) NM_000816 NM_008073
RefSeq (protein) NP_000807 NP_032099
Location (UCSC) Chr 5:
161.43 - 161.52 Mb
Chr 11:
41.75 - 41.84 Mb
PubMed search [1] [2]

Gamma-aminobutyric acid receptor subunit gamma-2 is a protein that in humans is encoded by the GABRG2 gene.

Gamma-aminobutyric acid (GABA), the major inhibitory neurotransmitter in the brain, mediates neuronal inhibition by binding to GABA receptors. The type A GABA receptors are pentameric chloride channels assembled from among many genetic variants of GABA(A) subunits. This gene encodes the gamma 2 subunit of GABA(A) receptor. Mutations in this gene have been associated with epilepsy and febrile seizures. Alternative splicing of this gene results in transcript variants encoding different isoforms.[1]



GABRG2 has been shown to interact with GABARAP[2][3][4] and Dopamine receptor D5.[5]

See also


  1. ^ "Entrez Gene: GABRG2 gamma-aminobutyric acid (GABA) A receptor, gamma 2".  
  2. ^ Nymann-Andersen, Jesper; Wang Hongbing, Chen Li, Kittler Josef T, Moss Stephen J, Olsen Richard W (Mar. 2002). "Subunit specificity and interaction domain between GABA(A) receptor-associated protein (GABARAP) and GABA(A) receptors". J. Neurochem. (England) 80 (5): 815–23. ISSN 0022-3042. PMID 11948245.  
  3. ^ Coyle, Joseph E; Qamar Seema, Rajashankar Kanagalaghatta R, Nikolov Dimitar B (Jan. 2002). "Structure of GABARAP in two conformations: implications for GABA(A) receptor localization and tubulin binding". Neuron (United States) 33 (1): 63–74. ISSN 0896-6273. PMID 11779472.  
  4. ^ Wang, H; Bedford F K, Brandon N J, Moss S J, Olsen R W (Jan. 1999). "GABA(A)-receptor-associated protein links GABA(A) receptors and the cytoskeleton". Nature (ENGLAND) 397 (6714): 69–72. doi:10.1038/16264. ISSN 0028-0836. PMID 9892355.  
  5. ^ Liu, F; Wan Q, Pristupa Z B, Yu X M, Wang Y T, Niznik H B (Jan. 2000). "Direct protein-protein coupling enables cross-talk between dopamine D5 and gamma-aminobutyric acid A receptors". Nature (ENGLAND) 403 (6767): 274–80. doi:10.1038/35002014. ISSN 0028-0836. PMID 10659839.  

Further reading

  • Moss SJ, Doherty CA, Huganir RL (1992). "Identification of the cAMP-dependent protein kinase and protein kinase C phosphorylation sites within the major intracellular domains of the beta 1, gamma 2S, and gamma 2L subunits of the gamma-aminobutyric acid type A receptor.". J. Biol. Chem. 267 (20): 14470–6. PMID 1321150.  
  • Wilcox AS, Warrington JA, Gardiner K, et al. (1992). "Human chromosomal localization of genes encoding the gamma 1 and gamma 2 subunits of the gamma-aminobutyric acid receptor indicates that members of this gene family are often clustered in the genome.". Proc. Natl. Acad. Sci. U.S.A. 89 (13): 5857–61. doi:10.1073/pnas.89.13.5857. PMID 1321425.  
  • Pritchett DB, Sontheimer H, Shivers BD, et al. (1989). "Importance of a novel GABAA receptor subunit for benzodiazepine pharmacology.". Nature 338 (6216): 582–5. doi:10.1038/338582a0. PMID 2538761.  
  • Russek SJ, Farb DH (1995). "Mapping of the beta 2 subunit gene (GABRB2) to microdissected human chromosome 5q34-q35 defines a gene cluster for the most abundant GABAA receptor isoform.". Genomics 23 (3): 528–33. doi:10.1006/geno.1994.1539. PMID 7851879.  
  • Kostrzewa M, Köhler A, Eppelt K, et al. (1997). "Assignment of genes encoding GABAA receptor subunits alpha 1, alpha 6, beta 2, and gamma 2 to a YAC contig of 5q33.". Eur. J. Hum. Genet. 4 (4): 199–204. PMID 8875185.  
  • Wang H, Bedford FK, Brandon NJ, et al. (1999). "GABA(A)-receptor-associated protein links GABA(A) receptors and the cytoskeleton.". Nature 397 (6714): 69–72. doi:10.1038/16264. PMID 9892355.  
  • Bonnert TP, McKernan RM, Farrar S, et al. (1999). "theta, a novel gamma-aminobutyric acid type A receptor subunit.". Proc. Natl. Acad. Sci. U.S.A. 96 (17): 9891–6. doi:10.1073/pnas.96.17.9891. PMID 10449790.  
  • Liu F, Wan Q, Pristupa ZB, et al. (2000). "Direct protein-protein coupling enables cross-talk between dopamine D5 and gamma-aminobutyric acid A receptors.". Nature 403 (6767): 274–80. doi:10.1038/35002014. PMID 10659839.  
  • Baulac S, Huberfeld G, Gourfinkel-An I, et al. (2001). "First genetic evidence of GABA(A) receptor dysfunction in epilepsy: a mutation in the gamma2-subunit gene.". Nat. Genet. 28 (1): 46–8. doi:10.1038/88254. PMID 11326274.  
  • Wallace RH, Marini C, Petrou S, et al. (2001). "Mutant GABA(A) receptor gamma2-subunit in childhood absence epilepsy and febrile seizures.". Nat. Genet. 28 (1): 49–52. doi:10.1038/88259. PMID 11326275.  
  • Jiang S, Yu J, Wang J, et al. (2001). "Complete genomic sequence of 195 Kb of human DNA containing the gene GABRG2.". DNA Seq. 11 (5): 373–82. doi:10.3109/10425170009033988. PMID 11328646.  
  • Harkin LA, Bowser DN, Dibbens LM, et al. (2002). "Truncation of the GABA(A)-receptor gamma2 subunit in a family with generalized epilepsy with febrile seizures plus.". Am. J. Hum. Genet. 70 (2): 530–6. doi:10.1086/338710. PMID 11748509.  
  • Nymann-Andersen J, Wang H, Chen L, et al. (2002). "Subunit specificity and interaction domain between GABA(A) receptor-associated protein (GABARAP) and GABA(A) receptors.". J. Neurochem. 80 (5): 815–23. doi:10.1046/j.0022-3042.2002.00762.x. PMID 11948245.  
  • Kananura C, Haug K, Sander T, et al. (2002). "A splice-site mutation in GABRG2 associated with childhood absence epilepsy and febrile convulsions.". Arch. Neurol. 59 (7): 1137–41. doi:10.1001/archneur.59.7.1137. PMID 12117362.  
  • Trudell J (2002). "Unique assignment of inter-subunit association in GABA(A) alpha 1 beta 3 gamma 2 receptors determined by molecular modeling.". Biochim. Biophys. Acta 1565 (1): 91–6. doi:10.1016/S0005-2736(02)00512-6. PMID 12225856.  
  • Nymann-Andersen J, Wang H, Olsen RW (2002). "Biochemical identification of the binding domain in the GABA(A) receptor-associated protein (GABARAP) mediating dimer formation.". Neuropharmacology 43 (4): 476–81. doi:10.1016/S0028-3908(02)00165-X. PMID 12367594.  
  • Sarto I, Wabnegger L, Dögl E, Sieghart W (2002). "Homologous sites of GABA(A) receptor alpha(1), beta(3) and gamma(2) subunits are important for assembly.". Neuropharmacology 43 (4): 482–91. doi:10.1016/S0028-3908(02)00160-0. PMID 12367595.  
  • Lu J, Chen Y, Zhang Y, et al. (2002). "Mutation screen of the GABA(A) receptor gamma 2 subunit gene in Chinese patients with childhood absence epilepsy.". Neurosci. Lett. 332 (2): 75–8. doi:10.1016/S0304-3940(02)00805-4. PMID 12384214.  
  • Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMID 12477932.  
  • Wang J, Liu S, Haditsch U, et al. (2003). "Interaction of calcineurin and type-A GABA receptor gamma 2 subunits produces long-term depression at CA1 inhibitory synapses.". J. Neurosci. 23 (3): 826–36. PMID 12574411.  

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



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