ArticleJournal of the American Chemical Society2024
Scalable Thiol Reactivity Profiling Identifies Azetidinyl Oxadiazoles as Cysteine-Targeting Electrophiles.
Article in Journal of the American Chemical Society, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Nutrient deprivation enhances the cytotoxic effects of a sulfonamide-chalcone hybrid in PC-3 prostate cancer cells.Molecular and cellular biochemistry · 2026Article
- Normalizing Covalent Potency for Electrophilicity with Ligand Reactivity Efficiency.Journal of medicinal chemistry · 2026Review
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Authors and funding
7 authors.
Funding
Abstract
Cysteine reactive groups are a mainstay in the design of covalent drugs and probe molecules, yet only a handful of electrophiles are routinely used to target this amino acid. Here, we report the development of scalable thiol reactivity (STRP), a method which enables the facile interrogation of large chemical libraries for intrinsic reactivity with cysteine. High throughput screening using STRP identified the azetidinyl oxadiazole as a moiety that selectively reacts with cysteine through a ring opening-based mechanism, capable of covalently engaging cysteine residues broadly across the human proteome. We show the utility of this reactive group with the discovery of an azetidinyl oxadiazole containing a small molecule that augments the catalytic activity of the deubiquitinase UCHL1 in vitro and in cells by covalently modifying a cysteine distal to its enzymatic active site. This study adds a novel cysteine targeting group to the electrophilic lexicon and provides robust methodology to rapidly surveil libraries for reactivity with cysteine.
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