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- W4308612173 abstract "DNA-binding proteins are promising therapeutic targets but are notoriously difficult to drug. Here, we evaluate a chemoproteomic DNA interaction platform as a complementary strategy for parallelized compound profiling. To enable this approach, we determined the proteomic binding landscape of 92 immobilized DNA sequences. Perturbation-induced activity changes of captured transcription factors in disease-relevant settings demonstrated functional relevance of the enriched subproteome. Chemoproteomic profiling of >300 cysteine-directed compounds against a coverage optimized bead mixture, which specifically captures >150 DNA binders, revealed competition of several DNA-binding proteins, including the transcription factors ELF1 and ELF2. We also discovered the first compound that displaces the DNA-repair complex MSH2-MSH3 from DNA. Compound binding to cysteine 252 on MSH3 was confirmed using chemoproteomic reactive cysteine profiling. Overall, these results suggested that chemoproteomic DNA bead pull-downs enable the specific readout of transcription factor activity and can identify functional hotspots on DNA binders toward expanding the druggable proteome." @default.
- W4308612173 created "2022-11-13" @default.
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- W4308612173 date "2022-11-01" @default.
- W4308612173 modified "2023-09-27" @default.
- W4308612173 title "Chemoproteomic profiling to identify activity changes and functional inhibitors of DNA-binding proteins" @default.
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- W4308612173 doi "https://doi.org/10.1016/j.chembiol.2022.10.008" @default.
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