Abstract
Recognition of phosphotyrosine-containing sequences by SH2 domains confers specificity in tyrosine kinase pathways. By assessing interactions between isolated SH2 domains and their binding proteins, it is possible to gain insight into otherwise inaccessible complex cellular systems. Far-Western, pull-down, and fluorescence polarization (FP) have been frequently used for characterization of phosphotyrosine signaling. Here, we outline standard protocols for these established assays using recombinant SH2 domain, emphasizing the importance of appropriate sample preparation and assay controls.
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Acknowledgments
We thank Joshua Jadwin for his assistance with editing this chapter, and Bruce Mayer for his continuous encouragement and support. This study was partly supported by grant CA1154966 from the National Institutes of Health and Quest for CURES (QFC) grant from the Leukemia and Lymphoma Society (to K.M.).
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Machida, K., Liu, B. (2017). Binding Assays Using Recombinant SH2 Domains: Far-Western, Pull-Down, and Fluorescence Polarization. In: Machida, K., Liu, B. (eds) SH2 Domains. Methods in Molecular Biology, vol 1555. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-6762-9_17
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DOI: https://doi.org/10.1007/978-1-4939-6762-9_17
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