CD63

CD63 (CD63 Molecule) is a Protein Coding gene. Diseases associated with CD63 include Hermansky-Pudlak Syndrome and Melanoma. Among its related pathways are Response to elevated platelet cytosolic Ca2+ and Innate Immune System. An important paralog of this gene is TSPAN33.

CD63 Molecule

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.

Cell-matrix adhesion Source: UniProtKB
Cell migration Source: UniProtKB
Cellular protein localization Source: MGI
Endosome to melanosome transport Source: UniProtKB
Neutrophil degranulation Source: Reactome
Pigment granule maturation Source: UniProtKB
Platelet degranulation Source: Reactome
Positive regulation of integrin-mediated signaling pathway Source: UniProtKB
Positive regulation of receptor internalization Source: UniProtKB
Protein transport Source: UniProtKB-KW
Regulation of potassium ion transmembrane transport Source: MGI
Regulation of vascular endothelial growth factor signaling pathway Source: UniProtKB

Lysosome membrane; Cell membrane; Extracellular exosome; Late endosome membrane; Multivesicular body; Melanosome; Cell surface. Also found in Weibel-Palade bodies of endothelial cells (PubMed:10793155). Located in platelet dense granules (PubMed:7682577). Detected in a subset of pre-melanosomes. Detected on intralumenal vesicles (ILVs) within multivesicular bodies (PubMed:21962903).

Cytoplasmic: 2-11
Helical: 12-32
Extracellular: 33-51
Helical: 52-72
Cytoplasmic: 73-81
Helical: 82-102
Extracellular: 103-203
Helical: 204-224
Cytoplasmic: 225-238

Palmitoylated at a low, basal level in unstimulated platelets. The level of palmitoylation increases when platelets are activated by thrombin (in vitro).