======= 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 |}}