Gamma-aminobutyric acid receptor subunit alpha-1

NameGamma-aminobutyric acid receptor subunit alpha-1
Synonyms
  • GABA(A) receptor subunit alpha-1
Gene NameGABRA1
OrganismHuman
Amino acid sequence
>lcl|BSEQ0010561|Gamma-aminobutyric acid receptor subunit alpha-1
MRKSPGLSDCLWAWILLLSTLTGRSYGQPSLQDELKDNTTVFTRILDRLLDGYDNRLRPG
LGERVTEVKTDIFVTSFGPVSDHDMEYTIDVFFRQSWKDERLKFKGPMTVLRLNNLMASK
IWTPDTFFHNGKKSVAHNMTMPNKLLRITEDGTLLYTMRLTVRAECPMHLEDFPMDAHAC
PLKFGSYAYTRAEVVYEWTREPARSVVVAEDGSRLNQYDLLGQTVDSGIVQSSTGEYVVM
TTHFHLKRKIGYFVIQTYLPCIMTVILSQVSFWLNRESVPARTVFGVTTVLTMTTLSISA
RNSLPKVAYATAMDWFIAVCYAFVFSALIEFATVNYFTKRGYAWDGKSVVPEKPKKVKDP
LIKKNNTYAPTATSYTPNLARGDPGLATIAKSATIEPKEVKPETKPPEPKKTFNSVSKID
RLSRIAFPLLFGIFNLVYWATYLNREPQLKAPTPHQ
Number of residues456
Molecular Weight51801.395
Theoretical pI9.61
GO Classification
Functions
  • chloride channel activity
  • inhibitory extracellular ligand-gated ion channel activity
  • GABA-A receptor activity
  • drug binding
Processes
  • response to drug
  • gamma-aminobutyric acid signaling pathway
  • cellular response to histamine
  • synaptic transmission, GABAergic
  • synaptic transmission
  • transmembrane transport
  • ion transmembrane transport
  • chloride transmembrane transport
  • regulation of membrane potential
  • neurological system process
  • transport
Components
  • chloride channel complex
  • postsynaptic membrane
  • GABA-A receptor complex
  • GABA receptor complex
  • plasma membrane
  • cell junction
  • integral component of plasma membrane
  • synapse
  • neuron projection
General FunctionInhibitory extracellular ligand-gated ion channel activity
Specific FunctionComponent of the heteropentameric receptor for GABA, the major inhibitory neurotransmitter in the vertebrate brain. Functions also as histamine receptor and mediates cellular responses to histamine. Functions as receptor for diazepines and various anesthetics, such as pentobarbital; these are bound at a separate allosteric effector binding site. Functions as ligand-gated chloride channel (By similarity).
Pfam Domain Function
Transmembrane Regions252-273 279-300 313-334 422-443
GenBank Protein ID31631
UniProtKB IDP14867
UniProtKB Entry NameGBRA1_HUMAN
Cellular LocationCell junction
Gene sequence
>lcl|BSEQ0010562|Gamma-aminobutyric acid receptor subunit alpha-1 (GABRA1)
ATGAGGAAAAGTCCAGGTCTGTCTGACTGTCTTTGGGCCTGGATCCTCCTTCTGAGCACA
CTGACTGGAAGAAGCTATGGACAGCCGTCATTACAAGATGAACTTAAAGACAATACCACT
GTCTTCACCAGGATTTTGGACAGACTCCTAGATGGTTATGACAATCGCCTGAGACCAGGA
TTGGGAGAGCGTGTAACCGAAGTGAAGACTGATATCTTCGTCACCAGTTTCGGACCCGTT
TCAGACCATGATATGGAATATACAATAGATGTATTTTTCCGTCAAAGCTGGAAGGATGAA
AGGTTAAAATTTAAAGGACCTATGACAGTCCTCCGGTTAAATAACCTAATGGCAAGTAAA
ATCTGGACTCCGGACACATTTTTCCACAATGGAAAGAAGTCAGTGGCCCACAACATGACC
ATGCCCAACAAACTCCTGCGGATCACAGAGGATGGCACCTTGCTGTACACCATGAGGCTG
ACAGTGAGAGCTGAATGTCCGATGCATTTGGAGGACTTCCCTATGGATGCCCATGCTTGC
CCACTAAAATTTGGAAGTTATGCTTATACAAGAGCAGAAGTTGTTTATGAATGGACCAGA
GAGCCAGCACGCTCAGTGGTTGTAGCAGAAGATGGATCACGTCTAAACCAGTATGACCTT
CTTGGACAAACAGTAGACTCTGGAATTGTCCAGTCAAGTACAGGAGAATATGTTGTTATG
ACCACTCATTTCCACTTGAAGAGAAAGATTGGCTACTTTGTTATTCAAACATACCTGCCA
TGCATAATGACAGTGATTCTCTCACAAGTCTCCTTCTGGCTCAACAGAGAGTCTGTACCA
GCAAGAACTGTCTTTGGAGTAACAACTGTGCTCACCATGACAACATTGAGCATCAGTGCC
AGAAACTCCCTCCCTAAGGTGGCTTATGCAACAGCTATGGATTGGTTTATTGCCGTGTGC
TATGCCTTTGTGTTCTCAGCTCTGATTGAGTTTGCCACAGTAAACTATTTCACTAAGAGA
GGTTATGCATGGGATGGCAAAAGTGTGGTTCCAGAAAAGCCAAAGAAAGTAAAGGATCCT
CTTATTAAGAAAAACAACACTTACGCTCCAACAGCAACCAGCTACACCCCTAATTTGGCC
AGGGGCGACCCGGGCTTAGCCACCATTGCTAAAAGTGCAACCATAGAACCTAAAGAGGTC
AAGCCCGAAACAAAACCACCAGAACCCAAGAAAACCTTTAACAGTGTCAGCAAAATTGAC
CGACTGTCAAGAATAGCCTTCCCGCTGCTATTTGGAATCTTTAACTTAGTCTACTGGGCT
ACGTATTTAAACAGAGAGCCTCAGCTAAAAGCCCCCACACCACATCAATAG
GenBank Gene IDX13584
GeneCard IDNot Available
GenAtlas IDGABRA1
HGNC IDHGNC:4075
Chromosome Location5
Locus5q34-q35
References
  1. Schofield PR, Pritchett DB, Sontheimer H, Kettenmann H, Seeburg PH: Sequence and expression of human GABAA receptor alpha 1 and beta 1 subunits. FEBS Lett. 1989 Feb 27;244(2):361-4. 2465923
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  3. Garrett KM, Duman RS, Saito N, Blume AJ, Vitek MP, Tallman JF: Isolation of a cDNA clone for the alpha subunit of the human GABA-A receptor. Biochem Biophys Res Commun. 1988 Oct 31;156(2):1039-45. 2847710
  4. Lachance-Touchette P, Brown P, Meloche C, Kinirons P, Lapointe L, Lacasse H, Lortie A, Carmant L, Bedford F, Bowie D, Cossette P: Novel alpha1 and gamma2 GABAA receptor subunit mutations in families with idiopathic generalized epilepsy. Eur J Neurosci. 2011 Jul;34(2):237-49. doi: 10.1111/j.1460-9568.2011.07767.x. Epub 2011 Jun 30. 21714819
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  6. Cossette P, Liu L, Brisebois K, Dong H, Lortie A, Vanasse M, Saint-Hilaire JM, Carmant L, Verner A, Lu WY, Wang YT, Rouleau GA: Mutation of GABRA1 in an autosomal dominant form of juvenile myoclonic epilepsy. Nat Genet. 2002 Jun;31(2):184-9. Epub 2002 May 6. 11992121
  7. Maljevic S, Krampfl K, Cobilanschi J, Tilgen N, Beyer S, Weber YG, Schlesinger F, Ursu D, Melzer W, Cossette P, Bufler J, Lerche H, Heils A: A mutation in the GABA(A) receptor alpha(1)-subunit is associated with absence epilepsy. Ann Neurol. 2006 Jun;59(6):983-7. 16718694