ArticleNature communications2025
Chemical tools to define and manipulate interferon-inducible Ubl protease USP18.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Substrate-Selective Inhibition of the SARS-CoV-2 Papain-Like Protease: Inhibition of Hydrolysis of Human Over Viral Substrates.Chemistry (Weinheim an der Bergstrasse, Germany) · 2026Article
- Understanding protein ISGylation, a multifaceted posttranslational modification.Cell chemical biology · 2026Review
- NAE1/UBA3-UBE2M are E1 and E2 enzymes for the URM1 modification.Nature communications · 2026Article
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Abstract
Ubiquitin-specific protease 18 (USP18) is a multifunctional cysteine protease primarily responsible for deconjugating the interferon-inducible ubiquitin-like modifier ISG15 from protein substrates. Here, we report the design and synthesis of activity-based probes (ABPs) that incorporate unnatural amino acids into the C-terminal tail of ISG15, enabling the selective detection of USP18 activity over other ISG15 cross-reactive deubiquitinases (DUBs) such as USP5 and USP14. Combined with a ubiquitin-based DUB ABP, the USP18 ABP is employed in a chemoproteomics screening platform to identify and assess inhibitors of DUBs including USP18. We further demonstrate that USP18 ABPs can be utilized to profile differential activities of USP18 in lung cancer cell lines, providing a strategy that will help define the activity-related landscape of USP18 in different disease states and unravel important (de)ISGylation-dependent biological processes.
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