| ID | Sequence | Length | GC content |
|---|---|---|---|
| AGUUUCAGACAAGCCUGCUUGCCGGAGCUCAGCAGACACCAGGCCUUCC… | 2421 nt | 0.6349 | |
| AAACCGGCUUUGUAAGCCCCGAUUCCUCACCCAGAACCGGCUCUCCAUU… | 2356 nt | 0.6329 | |
| CUGCUGCUCCCACACUCCCAGCCCACCCAUCCACGUUGACUCAUGUGAG… | 2553 nt | 0.6114 |
This gene encodes an enzyme belonging to the protein tyrosine kinase family, and it plays a role in T-cell development and lymphocyte activation. This enzyme, which is phosphorylated on tyrosine residues upon T-cell antigen receptor (TCR) stimulation, functions in the initial step of TCR-mediated signal transduction in combination with the Src family kinases, Lck and Fyn. This enzyme is also essential for thymocyte development. Mutations in this gene cause selective T-cell defect, a severe combined immunodeficiency disease characterized by a selective absence of CD8-positive T-cells. Two transcript variants that encode different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
A study in mice demonstrated that the ZAP70 protein was up-regulated in lung tissue following thoracic irradiation, as validated by immunohistochemistry, indicating its involvement in Th1 and Th2 differentiation pathways during radiation-induced lung injury [Li et al. DOI:10.2147/JIR.S322736]. In human monozygotic twins, differential methylation of the ZAP70 gene at a CpG site was associated with lower leisure-time physical activity in heavier co-twins [Kibble et al. DOI:10.1098/rsos.200872].