Gamma-aminobutyric acid type B receptor subunit 1

NameGamma-aminobutyric acid type B receptor subunit 1
Synonyms
  • GABA-B receptor 1
  • GPRC3A
Gene NameGABBR1
OrganismHuman
Amino acid sequence
>lcl|BSEQ0000433|Gamma-aminobutyric acid type B receptor subunit 1
MLLLLLLAPLFLRPPGAGGAQTPNATSEGCQIIHPPWEGGIRYRGLTRDQVKAINFLPVD
YEIEYVCRGEREVVGPKVRKCLANGSWTDMDTPSRCVRICSKSYLTLENGKVFLTGGDLP
ALDGARVDFRCDPDFHLVGSSRSICSQGQWSTPKPHCQVNRTPHSERRAVYIGALFPMSG
GWPGGQACQPAVEMALEDVNSRRDILPDYELKLIHHDSKCDPGQATKYLYELLYNDPIKI
ILMPGCSSVSTLVAEAARMWNLIVLSYGSSSPALSNRQRFPTFFRTHPSATLHNPTRVKL
FEKWGWKKIATIQQTTEVFTSTLDDLEERVKEAGIEITFRQSFFSDPAVPVKNLKRQDAR
IIVGLFYETEARKVFCEVYKERLFGKKYVWFLIGWYADNWFKIYDPSINCTVDEMTEAVE
GHITTEIVMLNPANTRSISNMTSQEFVEKLTKRLKRHPEETGGFQEAPLAYDAIWALALA
LNKTSGGGGRSGVRLEDFNYNNQTITDQIYRAMNSSSFEGVSGHVVFDASGSRMAWTLIE
QLQGGSYKKIGYYDSTKDDLSWSKTDKWIGGSPPADQTLVIKTFRFLSQKLFISVSVLSS
LGIVLAVVCLSFNIYNSHVRYIQNSQPNLNNLTAVGCSLALAAVFPLGLDGYHIGRNQFP
FVCQARLWLLGLGFSLGYGSMFTKIWWVHTVFTKKEEKKEWRKTLEPWKLYATVGLLVGM
DVLTLAIWQIVDPLHRTIETFAKEEPKEDIDVSILPQLEHCSSRKMNTWLGIFYGYKGLL
LLLGIFLAYETKSVSTEKINDHRAVGMAIYNVAVLCLITAPVTMILSSQQDAAFAFASLA
IVFSSYITLVVLFVPKMRRLITRGEWQSEAQDTMKTGSSTNNNEEEKSRLLEKENRELEK
IIAEKEERVSELRHQLQSRQQLRSRRHPPTPPEPSGGLPRGPPEPPDRLSCDGSRVHLLY
K
Number of residues961
Molecular Weight108319.4
Theoretical pI8.3
GO Classification
Functions
  • G-protein coupled GABA receptor activity
Processes
  • gamma-aminobutyric acid signaling pathway
  • synaptic transmission
  • adenylate cyclase-inhibiting G-protein coupled receptor signaling pathway
  • negative regulation of adenylate cyclase activity
Components
  • cytoplasm
  • extracellular region
  • postsynaptic membrane
  • plasma membrane
  • cell junction
  • integral component of plasma membrane
  • dendrite
  • G-protein coupled receptor heterodimeric complex
  • presynaptic membrane
General FunctionG-protein coupled gaba receptor activity
Specific FunctionComponent of a heterodimeric G-protein coupled receptor for GABA, formed by GABBR1 and GABBR2. Within the heterodimeric GABA receptor, only GABBR1 seems to bind agonists, while GABBR2 mediates coupling to G proteins. Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of down-stream effectors, such as adenylate cyclase. Signaling inhibits adenylate cyclase, stimulates phospholipase A2, activates potassium channels, inactivates voltage-dependent calcium-channels and modulates inositol phospholipid hydrolysis. Calcium is required for high affinity binding to GABA. Plays a critical role in the fine-tuning of inhibitory synaptic transmission. Pre-synaptic GABA receptor inhibits neurotransmitter release by down-regulating high-voltage activated calcium channels, whereas postsynaptic GABA receptor decreases neuronal excitability by activating a prominent inwardly rectifying potassium (Kir) conductance that underlies the late inhibitory postsynaptic potentials. Not only implicated in synaptic inhibition but also in hippocampal long-term potentiation, slow wave sleep, muscle relaxation and antinociception. Activated by (-)-baclofen, cgp27492 and blocked by phaclofen.Isoform 1E may regulate the formation of functional GABBR1/GABBR2 heterodimers by competing for GABBR2 binding. This could explain the observation that certain small molecule ligands exhibit differential affinity for central versus peripheral sites.
Pfam Domain Function
Transmembrane Regions592-612 632-652 668-688 711-731 769-789 805-825 834-854
GenBank Protein ID3892594
UniProtKB IDQ9UBS5
UniProtKB Entry NameGABR1_HUMAN
Cellular LocationCell membrane
Gene sequence
>lcl|BSEQ0010206|Gamma-aminobutyric acid type B receptor subunit 1 (GABBR1)
ATGTTGCTGCTGCTGCTACTGGCGCCACTCTTCCTCCGCCCCCCGGGCGCGGGCGGGGCG
CAGACCCCCAACGCCACCTCAGAAGGTTGCCAGATCATACACCCGCCCTGGGAAGGGGGC
ATCAGGTACCGGGGCCTGACTCGGGACCAGGTGAAGGCTATCAACTTCCTGCCAGTGGAC
TATGAGATTGAGTATGTGTGCCGGGGGGAGCGCGAGGTGGTGGGGCCCAAGGTCCGCAAG
TGCCTGGCCAACGGCTCCTGGACAGATATGGACACACCCAGCCGCTGTGTCCGAATCTGC
TCCAAGTCTTATTTGACCCTGGAAAATGGGAAGGTTTTCCTGACGGGTGGGGACCTCCCA
GCTCTGGACGGAGCCCGGGTGGATTTCCGGTGTGACCCCGACTTCCATCTGGTGGGCAGC
TCCCGGAGCATCTGTAGTCAGGGCCAGTGGAGCACCCCCAAGCCCCACTGCCAGGTGAAT
CGAACGCCACACTCAGAACGGCGCGCAGTGTACATCGGGGCACTGTTTCCCATGAGCGGG
GGCTGGCCAGGGGGCCAGGCCTGCCAGCCCGCGGTGGAGATGGCGCTGGAGGACGTGAAT
AGCCGCAGGGACATCCTGCCGGACTATGAGCTCAAGCTCATCCACCACGACAGCAAGTGT
GATCCAGGCCAAGCCACCAAGTACCTATATGAGCTGCTCTACAACGACCCTATCAAGATC
ATCCTTATGCCTGGCTGCAGCTCTGTCTCCACGCTGGTGGCTGAGGCTGCTAGGATGTGG
AACCTCATTGTGCTTTCCTATGGCTCCAGCTCACCAGCCCTGTCAAACCGGCAGCGTTTC
CCCACTTTCTTCCGAACGCACCCATCAGCCACACTCCACAACCCTACCCGCGTGAAACTC
TTTGAAAAGTGGGGCTGGAAGAAGATTGCTACCATCCAGCAGACCACTGAGGTCTTCACT
TCGACTCTGGACGACCTGGAGGAACGAGTGAAGGAGGCTGGAATTGAGATTACTTTCCGC
CAGAGTTTCTTCTCAGATCCAGCTGTGCCCGTCAAAAACCTGAAGCGCCAGGATGCCCGA
ATCATCGTGGGACTTTTCTATGAGACTGAAGCCCGGAAAGTTTTTTGTGAGGTGTACAAG
GAGCGTCTCTTTGGGAAGAAGTACGTCTGGTTCCTCATTGGGTGGTATGCTGACAATTGG
TTCAAGATCTACGACCCTTCTATCAACTGCACAGTGGATGAGATGACTGAGGCGGTGGAG
GGCCACATCACAACTGAGATTGTCATGCTGAATCCTGCCAATACCCGCAGCATTTCCAAC
ATGACATCCCAGGAATTTGTGGAGAAACTAACCAAGCGACTGAAAAGACACCCTGAGGAG
ACAGGAGGCTTCCAGGAGGCACCGCTGGCCTATGATGCCATCTGGGCCTTGGCACTGGCC
CTGAACAAGACATCTGGAGGAGGCGGCCGTTCTGGTGTGCGCCTGGAGGACTTCAACTAC
AACAACCAGACCATTACCGACCAAATCTACCGGGCAATGAACTCTTCGTCCTTTGAGGGT
GTCTCTGGCCATGTGGTGTTTGATGCCAGCGGCTCTCGGATGGCATGGACGCTTATCGAG
CAGCTTCAGGGTGGCAGCTACAAGAAGATTGGCTACTATGACAGCACCAAGGATGATCTT
TCCTGGTCCAAAACAGATAAATGGATTGGAGGGTCCCCCCCAGCTGACCAGACCCTGGTC
ATCAAGACATTCCGCTTCCTGTCACAGAAACTCTTTATCTCCGTCTCAGTTCTCTCCAGC
CTGGGCATTGTCCTAGCTGTTGTCTGTCTGTCCTTTAACATCTACAACTCACATGTCCGT
TATATCCAGAACTCACAGCCCAACCTGAACAACCTGACTGCTGTGGGCTGCTCACTGGCT
TTAGCTGCTGTCTTCCCCCTGGGGCTCGATGGTTACCACATTGGGAGGAACCAGTTTCCT
TTCGTCTGCCAGGCCCGCCTCTGGCTCCTGGGCCTGGGCTTTAGTCTGGGCTACGGTTCC
ATGTTCACCAAGATTTGGTGGGTCCACACGGTCTTCACAAAGAAGGAAGAAAAGAAGGAG
TGGAGGAAGACTCTGGAACCCTGGAAGCTGTATGCCACAGTGGGCCTGCTGGTGGGCATG
GATGTCCTCACTCTCGCCATCTGGCAGATCGTGGACCCTCTGCACCGGACCATTGAGACA
TTTGCCAAGGAGGAACCTAAGGAAGATATTGACGTCTCTATTCTGCCCCAGCTGGAGCAT
TGCAGCTCCAGGAAGATGAATACATGGCTTGGCATTTTCTATGGTTACAAGGGGCTGCTG
CTGCTGCTGGGAATCTTCCTTGCTTATGAGACCAAGAGTGTGTCCACTGAGAAGATCAAT
GATCACCGGGCTGTGGGCATGGCTATCTACAATGTGGCAGTCCTGTGCCTCATCACTGCT
CCTGTCACCATGATTCTGTCCAGCCAGCAGGATGCAGCCTTTGCCTTTGCCTCTCTTGCC
ATAGTTTTCTCCTCCTATATCACTCTTGTTGTGCTCTTTGTGCCCAAGATGCGCAGGCTG
ATCACCCGAGGGGAATGGCAGTCGGAGGCGCAGGACACCATGAAGACAGGGTCATCGACC
AACAACAACGAGGAGGAGAAGTCCCGGCTGTTGGAGAAGGAGAACCGTGAACTGGAAAAG
ATCATTGCTGAGAAAGAGGAGCGTGTCTCTGAACTGCGCCATCAACTCCAGTCTCGGCAG
CAGCTCCGCTCCCGGCGCCACCCACCGACACCCCCAGAACCCTCTGGGGGCCTGCCCAGG
GGACCCCCTGAGCCCCCCGACCGGCTTAGCTGTGATGGGAGTCGAGTGCATTTGCTTTAT
AAGTGA
GenBank Gene IDAJ225028
GeneCard IDNot Available
GenAtlas IDGABBR1
HGNC IDHGNC:4070
Chromosome Location6
Locus6p21.31
References
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