======= GPR18 ======= == Gene Information == * **Official Symbol**: GPR18 * **Official Name**: G protein-coupled receptor 18 * **Aliases and Previous Symbols**: N/A * **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=2841|2841]] * **UniProt**: [[https://www.uniprot.org/uniprot/Q14330|Q14330]] * **Interactions**: [[https://thebiogrid.org/search.php?search=GPR18&organism=9606|BioGRID]] * **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20GPR18|Open PubMed]] * **OMIM**: [[https://omim.org/entry/602042|Open OMIM]] == Function Summary == * **Entrez Summary**: N/A * **UniProt Summary**: Receptor for endocannabinoid N-arachidonyl glycine (NAGly) (PubMed:16844083, PubMed:24762058, PubMed:27572937). However, conflicting results about the role of NAGly as an agonist are reported (PubMed:27018161). Can also be activated by plant- derived and synthetic cannabinoid agonists (PubMed:24762058). The activity of this receptor is mediated by G proteins which inhibit adenylyl cyclase (PubMed:16844083). May contribute to regulation of the immune system. Is required for normal homeostasis of CD8+ subsets of intraepithelial lymphocytes (IELs) (CD8alphaalpha and CD8alphabeta IELs)in small intstine by supporting preferential migration of CD8alphaalpha T-cells to intraepithelial compartment over lamina propria compartment, and by mediating their reconstitution into small intestine after bone marrow transplant (By similarity). Plays a role in hypotensive responses, mediating reduction in intraocular and blood pressure (By similarity). Mediates NAGly-induced process of reorganization of actin filaments and induction of acrosomal exocytosis (PubMed:27572937). {ECO:0000250|UniProtKB:Q8K1Z6, ECO:0000269|PubMed:16844083, ECO:0000269|PubMed:24762058, ECO:0000269|PubMed:27572937}. |7tm 1| |alpha-beta intraepithelial T cell differentiation| |CD8-positive, alpha-beta intraepithelial T cell differentiation| |CD8-positive, gamma-delta intraepithelial T cell differentiation| |gamma-delta intraepithelial T cell differentiation| |gamma-delta T cell differentiation| |gamma-delta T cell activation| |CD8-positive, alpha-beta T cell differentiation| |CD8-positive, alpha-beta T cell activation| |negative regulation of leukocyte chemotaxis| |positive regulation of Rho protein signal transduction| |positive regulation of cytosolic calcium ion concentration involved in phospholipase C-activating G protein-coupled signaling pathway| |negative regulation of leukocyte migration| |alpha-beta T cell differentiation| |negative regulation of chemotaxis| |negative regulation of tumor necrosis factor production| |alpha-beta T cell activation| |negative regulation of tumor necrosis factor superfamily cytokine production| |positive regulation of Ras protein signal transduction| |positive regulation of small GTPase mediated signal transduction| |phospholipase C-activating G protein-coupled receptor signaling pathway| |regulation of leukocyte chemotaxis| |T cell differentiation| |regulation of Rho protein signal transduction| |cytoplasmic vesicle membrane| |regulation of tumor necrosis factor production| |regulation of tumor necrosis factor superfamily cytokine production| |regulation of leukocyte migration| |regulation of chemotaxis| |T cell activation| |lymphocyte differentiation| |regulation of Ras protein signal transduction| |negative regulation of cell migration| |negative regulation of cytokine production| |negative regulation of cell motility| |positive regulation of cytosolic calcium ion concentration| |negative regulation of cellular component movement| |negative regulation of locomotion| |regulation of cytosolic calcium ion concentration| |leukocyte differentiation| |regulation of small GTPase mediated signal transduction| |negative regulation of response to external stimulus| |lymphocyte activation| |cellular calcium ion homeostasis| |negative regulation of immune system process| |calcium ion homeostasis| |cellular divalent inorganic cation homeostasis| |divalent inorganic cation homeostasis| |cellular metal ion homeostasis| |hemopoiesis| |hematopoietic or lymphoid organ development| |metal ion homeostasis| |cellular cation homeostasis| |cellular ion homeostasis| |immune system development| |regulation of cytokine production| |cation homeostasis| |inorganic ion homeostasis| |G protein-coupled receptor activity| |cellular chemical homeostasis| |ion homeostasis| |regulation of cell migration| |cellular homeostasis| |regulation of cell motility| |leukocyte activation| |regulation of locomotion| |regulation of cellular component movement| |positive regulation of intracellular signal transduction| |cell activation| |regulation of response to external stimulus| |chemical homeostasis| |negative regulation of multicellular organismal process| |G protein-coupled receptor signaling pathway| |integral component of plasma membrane| |negative regulation of response to stimulus| |homeostatic process| |positive regulation of signal transduction| |regulation of immune system process| |positive regulation of cell communication| |positive regulation of signaling| |regulation of intracellular signal transduction| \\ === CRISPR Data === ^Screen^Score^ |[[:results:exp314|Dimethyloxaloylglycine 11μM R07 exp314]]|1.75| |[[:results:exp139|Nicotinamide Riboside 100μM R03 exp139]]|1.86| 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**: 13347 * **Expression level (log2 read counts)**: 4.0 {{:chemogenomics:nalm6 dist.png?nolink |}}