NameGamma-aminobutyric acid receptor subunit alpha-2
Synonyms
  • GABA(A) receptor subunit alpha-2
Gene NameGABRA2
OrganismHuman
Amino acid sequence
>lcl|BSEQ0037005|Gamma-aminobutyric acid receptor subunit alpha-2
MKTKLNIYNMQFLLFVFLVWDPARLVLANIQEDEAKNNITIFTRILDRLLDGYDNRLRPG
LGDSITEVFTNIYVTSFGPVSDTDMEYTIDVFFRQKWKDERLKFKGPMNILRLNNLMASK
IWTPDTFFHNGKKSVAHNMTMPNKLLRIQDDGTLLYTMRLTVQAECPMHLEDFPMDAHSC
PLKFGSYAYTTSEVTYIWTYNASDSVQVAPDGSRLNQYDLLGQSIGKETIKSSTGEYTVM
TAHFHLKRKIGYFVIQTYLPCIMTVILSQVSFWLNRESVPARTVFGVTTVLTMTTLSISA
RNSLPKVAYATAMDWFIAVCYAFVFSALIEFATVNYFTKRGWAWDGKSVVNDKKKEKASV
MIQNNAYAVAVANYAPNLSKDPVLSTISKSATTPEPNKKPENKPAEAKKTFNSVSKIDRM
SRIVFPVLFGTFNLVYWATYLNREPVLGVSP
Number of residues451
Molecular Weight51325.85
Theoretical pI9.41
GO Classification
Functions
  • chloride channel activity
  • GABA-A receptor activity
  • benzodiazepine receptor activity
  • inhibitory extracellular ligand-gated ion channel activity
Processes
  • regulation of neurotransmitter levels
  • synaptic transmission
  • transmembrane transport
  • ion transmembrane transport
  • chloride transmembrane transport
  • regulation of membrane potential
  • neurological system process
  • response to drug
  • neurotransmitter transport
  • gamma-aminobutyric acid signaling pathway
Components
  • plasma membrane
  • cell junction
  • integral component of plasma membrane
  • neuron projection
  • axon
  • postsynaptic membrane
  • chloride channel complex
  • GABA-A receptor complex
  • integral component of synaptic vesicle membrane
General FunctionInhibitory extracellular ligand-gated ion channel activity
Specific FunctionGABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
Pfam Domain Function
Transmembrane Regions252-273 279-300 313-334 420-441
GenBank Protein ID386422
UniProtKB IDP47869
UniProtKB Entry NameGBRA2_HUMAN
Cellular LocationCell junction
Gene sequence
>lcl|BSEQ0010268|Gamma-aminobutyric acid receptor subunit alpha-2 (GABRA2)
ATGAAGACAAAATTGAACATCTACAACATGCAGTTCCTGCTTTTTGTTTTCTTGGTGTGG
GACCCTGCCAGGTTGGTGCTGGCTAACATCCAAGAAGATGAGGCTAAAAATAACATTACC
ATCTTTACGAGAATTCTTGACAGACTTCTGGATGGTTACGATAATCGGCTTAGACCAGGA
CTGGGAGACAGTATTACTGAAGTCTTCACTAACATCTACGTGACCAGTTTTGGCCCTGTC
TCAGATACAGATATGGAATATACAATTGATGTTTTCTTTCGACAAAAATGGAAAGATGAA
CGTTTAAAATTTAAAGGTCCTATGAATATCCTTCGACTAAACAATTTAATGGCTAGCAAA
ATCTGGACTCCAGATACCTTTTTTCACAATGGGAAAAAATCAGTAGCTCATAATATGACA
ATGCCAAATAAGTTGCTTCGAATTCAGGATGATGGGACTCTGCTGTATACCATGAGGCTT
ACAGTTCAAGCTGAATGCCCAATGCACTTGGAGGATTTCCCAATGGATGCTCATTCATGT
CCTCTGAAATTTGGCAGCTATGCATATACAACTTCAGAGGTCACTTATATTTGGACTTAC
AATGCATCTGATTCAGTACAGGTTGCTCCTGATGGCTCTAGGTTAAATCAATATGACCTG
CTGGGCCAATCAATCGGAAAGGAGACAATTAAATCCAGTACAGGTGAATATACTGTAATG
ACAGCTCATTTCCACCTGAAAAGAAAAATTGGGTATTTTGTGATTCAAACCTATCTGCCT
TGCATCATGACTGTCATTCTCTCCCAAGTTTCATTCTGGCTTAACAGAGAATCTGTGCCT
GCAAGAACTGTGTTTGGAGTAACAACTGTCCTAACAATGACAACTCTAAGCATCAGTGCT
CGGAATTCTCTCCCCAAAGTGGCTTATGCAACTGCCATGGACTGGTTTATTGCTGTTTGT
TATGCATTTGTGTTCTCTGCCCTAATTGAATTTGCAACTGTTAATTACTTCACCAAAAGA
GGATGGGCTTGGGATGGGAAGAGTGTAGTAAATGACAAGAAAAAAGAAAAGGCTTCCGTT
ATGATACAGAACAACGCTTATGCAGTGGCTGTTGCCAATTATGCCCCGAATCTTTCAAAA
GATCCAGTTCTCTCCACCATCTCCAAGAGTGCAACCACGCCAGAACCCAACAAGAAGCCA
GAAAACAAGCCAGCTGAAGCAAAGAAAACTTTCAACAGTGTTAGCAAAATTGACAGAATG
TCCAGAATAGTTTTTCCAGTTTTGTTTGGTACCTTTAATTTAGTTTACTGGGCTACATAT
TTAAACAGAGAACCTGTATTAGGGGTCAGTCCTTGA
GenBank Gene IDS62907
GeneCard IDNot Available
GenAtlas IDGABRA2
HGNC IDHGNC:4076
Chromosome Location4
Locus4p12
References
  1. Hadingham KL, Wingrove P, Le Bourdelles B, Palmer KJ, Ragan CI, Whiting PJ: Cloning of cDNA sequences encoding human alpha 2 and alpha 3 gamma-aminobutyric acidA receptor subunits and characterization of the benzodiazepine pharmacology of recombinant alpha 1-, alpha 2-, alpha 3-, and alpha 5-containing human gamma-aminobutyric acidA receptors. Mol Pharmacol. 1993 Jun;43(6):970-5. 8391122
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  4. Edenberg HJ, Dick DM, Xuei X, Tian H, Almasy L, Bauer LO, Crowe RR, Goate A, Hesselbrock V, Jones K, Kwon J, Li TK, Nurnberger JI Jr, O'Connor SJ, Reich T, Rice J, Schuckit MA, Porjesz B, Foroud T, Begleiter H: Variations in GABRA2, encoding the alpha 2 subunit of the GABA(A) receptor, are associated with alcohol dependence and with brain oscillations. Am J Hum Genet. 2004 Apr;74(4):705-14. Epub 2004 Mar 12. 15024690