BACKGROUND Spleen tyrosine kinase (Syk) is a non-receptor protein tyrosine kinase expressed in a wide range of hematopoietic cells.1 Syk has not only been recognized as a key player in both innate and adaptive immunity, but there is also evidence of a role for Syk in non-immune cells and in the maintenance of vascular integrity,2 as well as the pathogenesis of malignant cancer.3 Syk contains two SH2 domains in tandem, and multiple auto-phosphorylation sites. Syk is activated upon binding of tandem SH2 domains to the immuno-receptor tyrosine-based activating motif (ITAM) of various types of receptors such as Fc-gamm-R, CR3, Dectin-1, and apoptotic cell-recognizing receptor. Syk is critical for the tyrosine phosphorylation of multiple proteins which regulate important pathways downstream of the receptor, such as Ca2+ mobilization, mitogen-activated protein kinase (MAPK) cascades, PI-3 kinase pathway and many other signaling pathways.4
REFERENCES
1. Nilsson, S. et al: Physiol Rev 81:1535–65, 2001.
2. Tremblay, G. B. et al: Mol Endocrinol. 11: 353-365, 1997.
3. Mathews, J & Gustafsson, J. A.: Mol. Interv. 3:281-92, 2003.
4. Tremblay, A. et al: Mol Cell 3, 513–519, 1999.
Products are for research use only. They are not intended for human, animal, or diagnostic applications.
Cat.No.: | CP10233 |
Antigen: | Purified recombinant human Syk fragments expressed in E. coli. |
Isotype: | Mouse IgG1 |
Species & predicted species cross- reactivity ( ): | Human, Mouse |
Applications & Suggested starting dilutions:* | WB 1:1000 IP n/d IHC n/d ICC n/d FACS n/d |
Predicted Molecular Weight of protein: | 72 kDa |
Specificity/Sensitivity: | Detects endogenous Syk proteins without cross-reactivity with other family members. |
Storage: | Store at -20°C, 4°C for frequent use. Avoid repeated freeze-thaw cycles. |
*Optimal working dilutions must be determined by end user.