Various embodiments of the present invention are related to kinase-directed, activity-based probes (“KABPs”) that bind to, and label, kinases. Each KABP includes a binding group that is recognized and bound by one or more kinases, a reactive group that tightly, and generally irreversibly, binds to the kinase, a tag group that provides a detectable label for the kinase-KABP pair, or that serves as a chemical handle for subsequent procedures and processes, and a linker group that links the tag group to one or more of the reactive group and the binding group, spacing the tag group from the reactive and binding groups. Additional embodiments of the present invention are directed to methods for identifying kinases within, and isolating kinases from, living cells by use of one or more KABPs.
本发明的各种实施例涉及定向酶活性的探针(“KABPs”),它们能够结合并标记酶。每个KABP包括一个结合基团,该结合基团被一个或多个酶识别和结合,一个反应基团,它紧密、通常是不可逆地结合到酶上,一个标签基团,为酶-KABP配对提供可检测的标签,或者作为后续程序和过程的
化学手柄,以及一个连接基团,将标签基团与一个或多个反应基团和结合基团连接起来,将标签基团与反应和结合基团分隔开来。本发明的其他实施例涉及使用一个或多个KABP在活细胞内识别和分离酶的方法。