| Function | Inhibitory receptor that plays a role in the modulation of immune responses. Suppresses T-cell activation by promoting the generation of mature immunoregulatory dendritic cells. Upon binding to its ligands PVR/CD155 or NECTIN2/CD112, which are expressed on antigen-presenting cells, sends inhibitory signals to the T-cell or NK cell. Mechanistically, interaction with ligand leads to phosphorylation of the cytoplasmic tail by Src family tyrosine kinases such as FYN or LCK, allowing subsequent binding to adapter GRB2 and SHIP1/INPP5D. In turn, inhibits PI3K and MAPK signaling cascades. In addition, associates with beta-arrestin-2/ARRB2 to recruit SHIP1/INPP5D that suppresses autoubiquitination of TRAF6 and subsequently inhibits NF-kappa-B signaling pathway. Acts also as a receptor for NECTIN4 to inhibit NK cell cytotoxicity. |
| Protein Name | T-Cell Immunoreceptor With Ig And Itim DomainsV-Set And Immunoglobulin Domain-Containing Protein 9V-Set And Transmembrane Domain-Containing Protein 3 |
| Cellular Localisation | Cell MembraneSingle-Pass Type I Membrane ProteinClustered To The Immunological Synapse Where It Disrupts Granule Polarization And Cytotoxicity Of Nk Cells Once Engaged With Pvr |
| Alternative Protein Names | T-Cell Immunoreceptor With Ig And Itim Domains proteinV-Set And Immunoglobulin Domain-Containing Protein 9 proteinV-Set And Transmembrane Domain-Containing Protein 3 proteinTIGIT proteinVSIG9 proteinVSTM3 protein |
Information sourced from Uniprot.org
