| ID | Sequence | Length | GC content |
|---|---|---|---|
| CUCUGUAAAAUAAAUGCGCUGGGCCGGAUCUUUUCUGAGUUCUCUUCUC… | 3177 nt | 0.5345 | |
| GAUUUGCGCAGAAUGAGCGGCUGAGGAUGGAAGGGCUGCAAGAUCCACC… | 3031 nt | 0.5572 | |
| AACUUUCCCCCCUCGGCGCCCCACCGGCUCCCGCGCGCCUCCCCUCGCG… | 2106 nt | 0.5256 | |
| AACUUUCCCCCCUCGGCGCCCCACCGGCUCCCGCGCGCCUCCCCUCGCG… | 1995 nt | 0.5228 |
The CD8 antigen is a cell surface glycoprotein found on most cytotoxic T lymphocytes that mediates efficient cell-cell interactions within the immune system. The CD8 antigen acts as a coreceptor with the T-cell receptor on the T lymphocyte to recognize antigens displayed by an antigen presenting cell in the context of class I MHC molecules. The coreceptor functions as either a homodimer composed of two alpha chains or as a heterodimer composed of one alpha and one beta chain. Both alpha and beta chains share significant homology to immunoglobulin variable light chains. This gene encodes the CD8 alpha chain. Multiple transcript variants encoding different isoforms have been found for this gene. The major protein isoforms of this gene differ by the presence or absence of a transmembrane domain and thus differ in being a membrane-anchored or secreted protein. [provided by RefSeq, May 2020]
A study in humans identified the CD8A as a core immune-related differentially expressed gene significantly downregulated in patients with severe burns and blunt trauma [Chen et al. DOI:10.3389/fgene.2022.1038222]. Its downregulation was negatively correlated with upregulated NKT cells and was associated with a worse prognosis in burn patients, while receiver operating characteristic curve analysis indicated the CD8A has good diagnostic potential for both conditions. A study in human skin tissue demonstrated that the proportion of CD8+ T cells was significantly lower in burn tissue compared to non-burn skin [Labuz et al. DOI:10.7554/eLife.82626].