Abstract
The Src family kinases (SFKs) are an important family of tyrosine kinases that are allosterically regulated by their SH2 and SH3 domains. Engagement of SFK SH2 and SH3 domains with their intramolecular ligands leads to reduced kinase activity by stabilizing an inactive ATP-binding site conformation. Disruption of these intramolecular interactions stabilizes a more active ATP-binding site conformation and restores SFK activity. Interestingly, this allosteric relationship is bidirectional in that ATP-competitive ligands that stabilize distinct active site conformations can divergently modulate the abilities of the regulatory SH2 and SH3 domains to participate in intermolecular interactions. Here, we describe a series of assays that profile the bidirectional relationship between the ATP-binding sites and regulatory domains of SFKs. These methods can be used to discover ATP-competitive inhibitors that are selective for distinct ATP-binding site conformations of SFKs and for characterizing the effects that ATP-competitive inhibitors of SFKs have on domains that are distal to their site of interaction.
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Register, A.C., Chakraborty, S., Maly, D.J. (2017). Allosteric Modulation of Src Family Kinases with ATP-Competitive Inhibitors. In: Tan, AC., Huang, P. (eds) Kinase Signaling Networks. Methods in Molecular Biology, vol 1636. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-7154-1_6
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DOI: https://doi.org/10.1007/978-1-4939-7154-1_6
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Publisher Name: Humana Press, New York, NY
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Online ISBN: 978-1-4939-7154-1
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