Background | CD63 is a member of the transmembrane 4 superfamily, also known as the tetraspanin family. Most of the members are cellsurface proteins that are characterized by the presence of four hydrophobic domains. These proteins mediate signal transduction events that play a role in the regulation of cell development, activation, growth and motility. This protein is a cell surface glycoprotein that is known to complex with integrins. It may function as a blood platelet activation marker. |
Tissue Specificity | Detected in platelets (at protein level). Dysplastic nevi, radial growth phase primary melanomas, hematopoietic cells, tissue macrophages. |
Post Translational Modifications | Palmitoylated at a low, basal level in unstimulated platelets. The level of palmitoylation increases when platelets are activated by thrombin (in vitro). |
Function | Functions as cell surface receptor for TIMP1 and plays a role in the activation of cellular signaling cascades. Plays a role in the activation of ITGB1 and integrin signaling, leading to the activation of AKT, FAK/PTK2 and MAP kinases. Promotes cell survival, reorganization of the actin cytoskeleton, cell adhesion, spreading and migration, via its role in the activation of AKT and FAK/PTK2. Plays a role in VEGFA signaling via its role in regulating the internalization of KDR/VEGFR2. Plays a role in intracellular vesicular transport processes, and is required for normal trafficking of the PMEL luminal domain that is essential for the development and maturation of melanocytes. Plays a role in the adhesion of leukocytes onto endothelial cells via its role in the regulation of SELP trafficking. May play a role in mast cell degranulation in response to Ms4a2/FceRI stimulation, but not in mast cell degranulation in response to other stimuli. |
Database Links | Reactome: R-HSA-114608 |
Cellular Localisation | Cell MembraneMulti-Pass Membrane ProteinLysosome MembraneLate Endosome MembraneEndosomeMultivesicular BodyMelanosomeSecretedExtracellular ExosomeCell SurfaceAlso Found In Weibel-Palade Bodies Of Endothelial CellsLocated In Platelet Dense GranulesDetected In A Subset Of Pre-MelanosomesDetected On Intralumenal Vesicles (Ilvs) Within Multivesicular Bodies |
Protein Name | Cd63 AntigenGranulophysinLysosomal-Associated Membrane Protein 3Lamp-3Melanoma-Associated Antigen Me491Oma81hOcular Melanoma-Associated AntigenTetraspanin-30Tspan-30Cd Antigen Cd63 |
Alternative Names | Anti-Cd63 Antigen antibodyAnti-Granulophysin antibodyAnti-Lysosomal-Associated Membrane Protein 3 antibodyAnti-Lamp-3 antibodyAnti-Melanoma-Associated Antigen Me491 antibodyAnti-Oma81h antibodyAnti-Ocular Melanoma-Associated Antigen antibodyAnti-Tetraspanin-30 antibodyAnti-Tspan-30 antibodyAnti-Cd Antigen Cd63 antibodyAnti-CD63 antibodyAnti-MLA1 antibodyAnti-TSPAN30 antibody |
validated_applications | WB, IF |
gene_identifier | ENSG00000135404 |
Information sourced from Uniprot.org