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The 17A2 antibody reacts with the mouse CD3 complex, comprised of CD3 epsilon, CD3 gamma and CD3 delta. These integral membrane protein chains assemble with additional chains of the T cell receptor (TCR), as well as CD3 zeta chain, to form the T cell receptor – CD3 complex. Together with co-receptors CD4 or CD8, the complex serves to recognize antigens bound to MHC molecules on antigen-presenting cells. Such interactions promote T cell receptor signaling (T cell activation) and can result in a number of cellular responses including proliferation, differentiation, production of cytokines or activation-induced cell death. CD3 is differentially expressed during thymocyte-to-T cell development and on all mature T cells.
The 17A2 antibody is a widely used phenotypic marker for mouse T cells. In addition, as the CD3e chain within the TCR complex contains intracellular signaling domains, binding of 17A2 antibody to CD3 can induce cell activation (use format suitable for functional assays). A recent publication of the crystal structure of a murine CD3e-mitogenic antibody complex provides further insight into the action of commonly used agonist antibodies (Fernandes, R.A. et al. 2012. Journal of Biological Chemistry. 287: 13324-13335).
Recent Publications:
Perez J, Dansou B, Herve R, Levi C, Tamouza H, Vandermeersch S, Demey-Thomas E, Haymann JP, Zafrani L, Klatzmann D, Boissier MC, Letavernier E and Baud L. 2015. J Immunol. doi: 10.4049/jimmunol.1500749. (Flow Cytometry)
| Name | violetFluor™ 450 Anti-Mouse CD3 (17A2) |
|---|---|
| Cat. No. | 75-0032 |
| Alternative Names | CD3 epsilon |
| Gene ID | 12502 |
| Clone | 17A2 |
| Isotype | Rat IgG2b, kappa |
| Reactivity | Mouse |
| Cross Reactivity | |
| Format | violetFluor™ |
| Applications | Flow Cytometry |
| Citations* | Joetham A, Ohnishi H, Okamoto M, Takeda K, Schedel M, Domenico J, Dakhama A, and Gelfand EW. 2012. J. Biol. Chem. 287:17100-17108. (in vitro activation) Kasahara S and Clark, EA. 2012. J. Leukoc. Biol. 91:437-448. (in vitro activation) Xiao J, Julianty A, Wen J, Smith SV, Park PW, Ford ML, Haller CA, and Chaikof EL. 2012. Arterioscler. Thromb. Vasc. Biol. 32:386-396. (in vivo T cell depletion) Bas A, Swamy M, Abeler-Dorner L, Williams G, Pang DJ, Barbee SD, and Hayday AC. 2011 Proc. Natl. Acad. Sci. 108: 4376-4381. (Immunohistochemistry - Paraffin embedded sections) Miescher GC, Schreyer M, and MacDonald HR. 1989. Immunol. Lett. 23: 113-118. (Origination of clone 17A2, Functional Assay, Immunohistochemistry, Immunoprecipitation) |
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