| ID | Sequence | Length | GC content |
|---|---|---|---|
| AGAGAGCCCCGGAGCCGCGGCGGGAGAGGAACGCGCAGCCAGCCUUGGG… | 2314 nt | 0.5290 | |
| AGAGAGCCCCGGAGCCGCGGCGGGAGAGGAACGCGCAGCCAGCCUUGGG… | 2329 nt | 0.5290 | |
| AGAGAGCCCCGGAGCCGCGGCGGGAGAGGAACGCGCAGCCAGCCUUGGG… | 799 nt | 0.5244 | |
| AGAGAGCCCCGGAGCCGCGGCGGGAGAGGAACGCGCAGCCAGCCUUGGG… | 866 nt | 0.5266 | |
| AGAGAGCCCCGGAGCCGCGGCGGGAGAGGAACGCGCAGCCAGCCUUGGG… | 780 nt | 0.5359 | |
| AGAGAGCCCCGGAGCCGCGGCGGGAGAGGAACGCGCAGCCAGCCUUGGG… | 1023 nt | 0.5200 |
The protein encoded by this gene is a member of the transmembrane 4 superfamily, also known as the tetraspanin family. Most of these members are cell-surface proteins that are characterized by the presence of four hydrophobic domains. The proteins mediate signal transduction events that play a role in the regulation of cell development, activation, growth and motility. The encoded protein is a cell surface glycoprotein that is known to complex with integrins. It may function as a blood platelet activation marker. Deficiency of this protein is associated with Hermansky-Pudlak syndrome. Also this gene has been associated with tumor progression. Alternative splicing results in multiple transcript variants encoding different protein isoforms. [provided by RefSeq, Apr 2012]
A study in mice demonstrated that exosomes isolated from serum after total-body irradiation exacerbated intestinal injury by promoting apoptosis and DNA damage, as indicated by increased markers including the CD63 [Li et al. DOI:10.1038/s41401-021-00615-6]. In human forensic research, the CD63 was validated as a stable exosomal surface marker, showing no significant difference in expression between exosomes isolated from post-mortem body fluids and those from ante-mortem controls, and its expression was sustained under simulated post-mortem conditions for up to 48 hours [Kim et al. DOI:10.3390/diagnostics12092153].