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- W2316575052 abstract "This work describes the first rational targeting of tyrosine residues in a protein binding site by small-molecule covalent probes. Specific tyrosine residues in the active site of the mRNA-decapping scavenger enzyme DcpS were modified using reactive sulfonyl fluoride covalent inhibitors. Structure-based molecular design was used to create an alkyne-tagged probe bearing the sulfonyl fluoride warhead, thus enabling the efficient capture of the protein from a complex proteome. Use of the probe in competition experiments with a diaminoquinazoline DcpS inhibitor permitted the quantification of intracellular target occupancy. As a result, diaminoquinazoline upregulators of survival motor neuron protein that are used for the treatment of spinal muscular atrophy were confirmed as inhibitors of DcpS in human primary cells. This work illustrates the utility of sulfonyl fluoride probes designed to react with specific tyrosine residues of a protein and augments the chemical biology toolkit by these probes uses in target validation and molecular pharmacology." @default.
- W2316575052 created "2016-06-24" @default.
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- W2316575052 date "2015-01-29" @default.
- W2316575052 modified "2023-10-02" @default.
- W2316575052 title "Rational Targeting of Active-Site Tyrosine Residues Using Sulfonyl Fluoride Probes" @default.
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- W2316575052 doi "https://doi.org/10.1021/cb5009475" @default.
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