Cited by 953Click Chemistry and ApplicationsAdvanced Proteomics Techniques and ApplicationsChemical Synthesis and Analysis

The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.

Proteome-wide covalent ligand discovery in native biological systems

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Abstract

Small molecules are powerful tools for investigating protein function and can serve as leads for new therapeutics. Most human proteins, however, lack small-molecule ligands, and entire protein classes are considered 'undruggable'. Fragment-based ligand discovery can identify small-molecule probes for proteins that have proven difficult to target using high-throughput screening of complex compound libraries. Although reversibly binding ligands are commonly pursued, covalent fragments provide an alternative route to small-molecule probes, including those that can access regions of proteins that are difficult to target through binding affinity alone. Here we report a quantitative analysis of cysteine-reactive small-molecule fragments screened against thousands of proteins in human proteomes and cells. Covalent ligands were identified for >700 cysteines found in both druggable proteins and proteins deficient in chemical probes, including transcription factors, adaptor/scaffolding proteins, and uncharacterized proteins. Among the atypical ligand-protein interactions discovered were compounds that react preferentially with pro- (inactive) caspases. We used these ligands to distinguish extrinsic apoptosis pathways in human cell lines versus primary human T cells, showing that the former is largely mediated by caspase-8 while the latter depends on both caspase-8 and -10. Fragment-based covalent ligand discovery provides a greatly expanded portrait of the ligandable proteome and furnishes compounds that can illuminate protein functions in native biological systems.

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Crossref · 10.1038/nature18002

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Metadata

Authors
Backus, K. M., Correia, B. E., Lum, K. M., Forli, S., Horning, B. D., González-Páez, G. E., Chatterjee, S., Lanning, B. R., Teijaro, J. R., Olson, A. J., Wolan, D. W., & Cravatt, B. F.
Affiliations
Scripps Research Institute (US)
Corresponding author
  • Backus, Keriann M.
  • Cravatt, Benjamin F.
Venue
Nature
Published
2016-06-15
Volume
534
Issue
7608
Pages
570-574
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2430132928
Cited by
940
References
43
Citations by year
2026: 109 · 2025: 114 · 2024: 114 · 2023: 134 · 2022: 82 · 2021: 94 · 2020: 87 · 2019: 69 · 2018: 61 · 2017: 54 · 2016: 18
FWCI
31.01
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • National Cancer Institute (CA-087660, R37CA087660, R01CA087660)
  • National Institute of General Medical Sciences (GM069832, GM-090294, GM108208, R01GM090294, F32GM108208, R01GM069832)
Topics
  • Physical Sciences › Chemistry › Organic Chemistry › Click Chemistry and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Physical Sciences › Chemistry › Organic Chemistry › Chemical Synthesis and Analysis
Keywords
covalent ligands, chemical probes, undruggable proteins, transcription factors, caspase-8, caspase-10, extrinsic apoptotic pathway, T cells, protein function
MeSH terms
Cells, Cultured, Cysteine, Drug Evaluation, Preclinical, Enzyme Precursors, Humans, Ligands, Peptide Fragments, T-Lymphocytes, Transcription Factors, Apoptosis, Proteome, Caspase 8, Caspase 10, Small Molecule Libraries

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