Flow cytometric analysis of Jurkat cells with ZAP70/SYK (phospho Y319) monoclonal antibody, clone A3 (FITC ) (Cat # MAB23430). Untreated (red) or treated with pervanadate (green) or concentration-matched Rabbit (G9) mAb IgG Isotype Control (PE Conjugate) for cells untreated (black) or treated with pervanadate (blue).
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
Other Designations:
syk-related tyrosine kinase,zeta-chain (TCR) associated protein kinase (70 kD),zeta-chain associated protein kinase 70kDa,zeta-chain associated protein kinase, 70kD