|Other Names||Gamma-aminobutyric acid type B receptor subunit 2, GABA-B receptor 2, GABA-B-R2, GABA-BR2, GABABR2, Gb2, G-protein coupled receptor 51, HG20, GABBR2, GPR51, GPRC3B|
|Format||Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.|
|Precautions||This product is for research use only. Not for use in diagnostic or therapeutic procedures.|
|Function||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. 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.|
|Cellular Location||Cell membrane; Multi-pass membrane protein. Cell junction, synapse, postsynaptic cell membrane; Multi-pass membrane protein. Note=Coexpression of GABBR1 and GABBR2 is required for GABBR1 maturation and transport to the plasma membrane. In contrast, GABBR2 does not depend on GABBR1 for transport to the cell membrane|
|Tissue Location||Highly expressed in brain, especially in cerebral cortex, thalamus, hippocampus, frontal, occipital and temporal lobe, occipital pole and cerebellum, followed by corpus callosum, caudate nucleus, spinal cord, amygdala and medulla Weakly expressed in heart, testis and skeletal muscle|
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The multi-pass membrane protein encoded by this genebelongs to the G-protein coupled receptor 3 family and GABA-Breceptor subfamily. The GABA-B receptors inhibit neuronal activitythrough G protein-coupled second-messenger systems, which regulatethe release of neurotransmitters, and the activity of ion channelsand adenylyl cyclase. This receptor subunit forms an activeheterodimeric complex with GABA-B receptor subunit 1, neither ofwhich is effective on its own. Allelic variants of this gene havebeen associated with nicotine dependence.
Oblak, A.L., et al. J. Neurochem. 114(5):1414-1423(2010)Letra, A., et al. Am. J. Med. Genet. A 152A (7), 1701-1710 (2010) :Rose, J.E., et al. Mol. Med. 16 (7-8), 247-253 (2010) :Jugessur, A., et al. PLoS ONE 5 (7), E11493 (2010) :Yokoyama, K., et al. Nephron Clin Pract 115 (4), C237-C243 (2010) :
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