======= GABBR2 ======= == Gene Information == * **Official Symbol**: GABBR2 * **Official Name**: gamma-aminobutyric acid type B receptor subunit 2 * **Aliases and Previous Symbols**: N/A * **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=9568|9568]] * **UniProt**: [[https://www.uniprot.org/uniprot/O75899|O75899]] * **Interactions**: [[https://thebiogrid.org/search.php?search=GABBR2&organism=9606|BioGRID]] * **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20GABBR2|Open PubMed]] * **OMIM**: [[https://omim.org/entry/607340|Open OMIM]] == Function Summary == * **Entrez Summary**: The multi-pass membrane protein encoded by this gene belongs to the G-protein coupled receptor 3 family and GABA-B receptor subfamily. The GABA-B receptors inhibit neuronal activity through G protein-coupled second-messenger systems, which regulate the release of neurotransmitters, and the activity of ion channels and adenylyl cyclase. This receptor subunit forms an active heterodimeric complex with GABA-B receptor subunit 1, neither of which is effective on its own. Allelic variants of this gene have been associated with nicotine dependence.[provided by RefSeq, Jan 2010]. * **UniProt Summary**: Component of a heterodimeric G-protein coupled receptor for GABA, formed by GABBR1 and GABBR2 (PubMed:9872316, PubMed:9872744, PubMed:15617512, PubMed:18165688, PubMed:22660477, PubMed:24305054). Within the heterodimeric GABA receptor, only GABBR1 seems to bind agonists, while GABBR2 mediates coupling to G proteins (PubMed:18165688). 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 (PubMed:10075644, PubMed:10773016, PubMed:24305054). Signaling inhibits adenylate cyclase, stimulates phospholipase A2, activates potassium channels, inactivates voltage-dependent calcium-channels and modulates inositol phospholipid hydrolysis (PubMed:10075644, PubMed:9872744, PubMed:10906333, PubMed:10773016). Plays a critical role in the fine-tuning of inhibitory synaptic transmission (PubMed:9872744, PubMed:22660477). 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 (PubMed:9872316, PubMed:10075644, PubMed:9872744, PubMed:22660477). Not only implicated in synaptic inhibition but also in hippocampal long- term potentiation, slow wave sleep, muscle relaxation and antinociception (Probable). {ECO:0000269|PubMed:10075644, ECO:0000269|PubMed:10328880, ECO:0000269|PubMed:15617512, ECO:0000269|PubMed:18165688, ECO:0000269|PubMed:22660477, ECO:0000269|PubMed:24305054, ECO:0000269|PubMed:9872316, ECO:0000269|PubMed:9872744, ECO:0000305}. |ANF receptor| |7tm 3| |GABA receptor complex| |G protein-coupled GABA receptor activity| |G protein-coupled receptor heterodimeric complex| |neuron-glial cell signaling| |negative regulation of adenylate cyclase activity| |negative regulation of cyclase activity| |negative regulation of lyase activity| |gamma-aminobutyric acid signaling pathway| |regulation of adenylate cyclase activity| |regulation of cyclase activity| |regulation of lyase activity| |postsynaptic membrane| |neuron projection| |chemical synaptic transmission| |anterograde trans-synaptic signaling| |trans-synaptic signaling| |synaptic signaling| |protein heterodimerization activity| |cell junction| |negative regulation of catalytic activity| |cell-cell signaling| |negative regulation of molecular function| |G protein-coupled receptor signaling pathway| |integral component of plasma membrane| \\ === CRISPR Data === ^Screen^Score^ |[[:results:exp349|Cytochalasin-B 5μM R07 exp349]]|-1.81| |[[:results:exp160|Ribavirin 10 to 15μM on day4 R04 exp160]]|1.76| |[[:results:exp410|THZ531 0.11 to 0.125μM on day4 R07 exp410]]|1.88| |[[:results:exp412|THZ531 0.11 to 0.125 to 0.35μM on day4 then day6 R07 exp412]]|1.89| |[[:results:exp355|Dinaciclib 0.007μM R07 exp355]]|1.97| No correlation found to any other genes in chemogenomics. Global Fraction of Cell Lines Where Essential: 0/739 ^Tissue^Fraction Of Cell Lines Where Essential^ |1290807.0|0/1| |909776.0|0/1| |bile duct|0/28| |blood|0/28| |bone|0/26| |breast|0/33| |central nervous system|0/56| |cervix|0/4| |colorectal|0/17| |esophagus|0/13| |fibroblast|0/1| |gastric|0/16| |kidney|0/21| |liver|0/20| |lung|0/75| |lymphocyte|0/16| |ovary|0/26| |pancreas|0/24| |peripheral nervous system|0/16| |plasma cell|0/15| |prostate|0/1| |skin|0/24| |soft tissue|0/9| |thyroid|0/2| |upper aerodigestive|0/22| |urinary tract|0/29| |uterus|0/5| == Essentiality in NALM6 == * **Essentiality Rank**: 8106 * **Expression level (log2 read counts)**: -0.1 {{:chemogenomics:nalm6 dist.png?nolink |}}