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HAF017). A specific band was detected for ZAP70 at approximately 70 kDa (as indicated). GAPDH is shown as a loading control. This experiment was conducted under reducing conditions and using Western Blot Buffer Group 1." class="big_lightbox" target="_blank">
CTS013). Tissue was stained with the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). Specific labeling was localized to the cytoplasm in epithelial cells. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections." class="big_lightbox" target="_blank">
HAF109). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system." class="big_lightbox" target="_blank">
HAF016). A specific band was detected for ZAP70 at approximately 70 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 2." class="big_lightbox" target="_blank">
CTS013). Tissue was stained using the Anti-Sheep HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS019) and counterstained with hematoxylin (blue). Specific staining was localized to epithelial cell cytoplasm. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections." class="big_lightbox" target="_blank">
HAF016). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system." class="big_lightbox" target="_blank">
Species: Hu Applications: WB, Simple Western, IHC Host: Sheep Polyclonal
Zap-70, a Syk-family protein tyrosine kinase, plays a critical role in mediating T cell signal transduction in response to T cell receptor (TCR) activation (1). TCR-mediated activation of the Src-family kinases, Lck and Fyn, results in tyrosine phosphorylation of the TCR zeta and CD3 chains. These domains serve as targets for binding of ZAP-70 via its tandem SH2 domains. This binding correlates with activation of ZAP-70, a critical event in T cell activation (2). Following TCR engagement, ZAP-70 is phosphorylated on several tyrosine residues, presumably by two mechanisms: an autophosphorylation and a trans-phosphorylation by the Src-family tyrosine kinase, Lck. Phosphorylation of Tyr319 is required for full activation and increased positive downstream regulation by ZAP-70 (3).