Gamma-aminobutyric acid type B receptor subunit 1
同义词
GABA-B receptor 1; GPRC3A
氨基酸序列
>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
一般功能
G-protein coupled gaba receptor activity
具体功能
Component 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.
跨膜区
592-612
632-652
668-688
711-731
769-789
805-825
834-854
基因序列
>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
Pdb标识
4MQE; 4MQF; 4MR7; 4MR8; 4MR9; 4MRM; 4MS1; 4MS3; 4MS4; 4PAS