ArticleOrganic letters2024
Design and Semisynthesis of Biselectrophile-Functionalized Ubiquitin Probes To Investigate Transthioesterification Reactions.
Article in Organic letters, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Synthetic Strategies for Activity-Based Probes to Decode Ubiquitin-Like Modifiers.Chemistry (Weinheim an der Bergstrasse, Germany) · 2026Review
- Internal Ubiquitin Electrophiles for Covalent Trapping and Inhibition of Deubiquitinases.Chembiochem : a European journal of chemical biology · 2025Article
- Chemical Tools for Probing the Ub/Ubl Conjugation Cascades.Chembiochem : a European journal of chemical biology · 2025Review
- Article
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Authors and funding
8 authors.
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Abstract
Ubiquitin (Ub) regulates a wide array of cellular processes through post-translational modification of protein substrates. Ub is conjugated at its C-terminus to target proteins via an enzymatic cascade in which covalently bound Ub thioesters are transferred from E1 activating enzymes to E2 conjugating enzymes, and then to certain E3 protein ligases. These transthioesterification reactions proceed via transient tetrahedral intermediates. A variety of chemical strategies have been used to capture E1-Ub-E2 and E2-Ub-E3 mimics, but these introduce modifications that disrupt atomic spacing at the linkage point relative to the native tetrahedral intermediate. We have developed a biselectrophilic PSAN warhead that can be installed in place of the conserved C-terminal glycine in Ub and used to form ternary protein complexes linked via cyanomethyldithioacetals that closely mimic the native tetrahedral intermediates. Investigation of the reactivity of the warhead and substituted analogues led to an effective semisynthetic route to Ub
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