Summary

Name GPR183
Full Name G-protein coupled receptor 183
Synonyms Epstein-Barr virus-induced G-protein coupled receptor 2, EBI2, EBV-induced G-protein coupled receptor 2, hEBI2 | EBI2
Primary ID P32249
Links - -
Type protein
Relations 6
Function G-protein coupled receptor expressed in lymphocytes that acts as a chemotactic receptor for B-cells, T-cells, splenic dendritic cells, monocytes/macrophages and astrocytes (By similarity). Receptor for oxysterol 7-alpha,25-dihydroxycholesterol (7-alpha,25-OHC) and other related oxysterols (PubMed:21796212, PubMed:22875855, PubMed:22930711). Mediates cell positioning and movement of a number of cells by binding the 7-alpha,25-OHC ligand that forms a chemotactic gradient (By similarity). Binding of 7-alpha,25-OHC mediates the correct localization of B-cells during humoral immune responses (By similarity). Guides B-cell movement along the B-cell zone-T-cell zone boundary and later to interfollicular and outer follicular regions (By similarity). Its specific expression during B-cell maturation helps position B-cells appropriately for mounting T-dependent antibody responses (By similarity). Collaborates with CXCR5 to mediate B-cell migration; probably by forming a heterodimer with CXCR5 that affects the interaction between of CXCL13 and CXCR5 (PubMed:22913878). Also acts as a chemotactic receptor for some T-cells upon binding to 7-alpha,25-OHC ligand (By similarity). Promotes follicular helper T (Tfh) cells differentiation by positioning activated T-cells at the follicle-T-zone interface, promoting contact of newly activated CD4 T-cells with activated dendritic cells and exposing them to Tfh-cell-promoting inducible costimulator (ICOS) ligand (By similarity). Expression in splenic dendritic cells is required for their homeostasis, localization and ability to induce B- and T-cell responses

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Relations

Regulator Mechanism target score
+ up-regulates activity img/direct-activation.png binding GNA12 0.264
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding GNAI1 0.393
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png chemical activation GPR183 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding GNAO1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding GNAI3 0.406
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding GNAZ 0.252
Publications: 1 Organism: Homo Sapiens