Cited by 2,609Protein Degradation and InhibitorsUbiquitin and proteasome pathwaysChemical Synthesis and Analysis

The DOI matches its Crossref record; 25 of the 25 references it cites were found in a registry or an index.

Protacs: Chimeric molecules that target proteins to the Skp1–Cullin–F box complex for ubiquitination and degradation

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Abstract

The intracellular levels of many proteins are regulated by ubiquitin-dependent proteolysis. One of the best-characterized enzymes that catalyzes the attachment of ubiquitin to proteins is a ubiquitin ligase complex, Skp1-Cullin-F box complex containing Hrt1 (SCF). We sought to artificially target a protein to the SCF complex for ubiquitination and degradation. To this end, we tested methionine aminopeptidase-2 (MetAP-2), which covalently binds the angiogenesis inhibitor ovalicin. A chimeric compound, protein-targeting chimeric molecule 1 (Protac-1), was synthesized to recruit MetAP-2 to SCF. One domain of Protac-1 contains the IκBα phosphopeptide that is recognized by the F-box protein β-TRCP, whereas the other domain is composed of ovalicin. We show that MetAP-2 can be tethered to SCF β -TRCP , ubiquitinated, and degraded in a Protac-1-dependent manner. In the future, this approach may be useful for conditional inactivation of proteins, and for targeting disease-causing proteins for destruction.

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Crossref · 10.1073/pnas.141230798

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Metadata

Authors
Sakamoto, K. M., Kim, K. B., Kumagai, A., Mercurio, F., Crews, C. M., & Deshaies, R. J.
Affiliations
California Institute of Technology (US)
Corresponding author
Deshaies, Raymond J.
Venue
Proceedings of the National Academy of Sciences
Published
2001-07-03
Volume
98
Issue
15
Pages
8554-8559
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2151683271
Cited by
2,609
References
25
Citations by year
2026: 355 · 2025: 435 · 2024: 399 · 2023: 309 · 2022: 278 · 2021: 224 · 2020: 193 · 2019: 118 · 2018: 75 · 2017: 48 · 2016: 28 · 2015: 15 · 2014: 13 · 2013: 9 · 2012: 10
FWCI
2.79
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • Leukemia and Lymphoma Society
  • University of California, Los Angeles
  • Jonsson Comprehensive Cancer Center
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Physical Sciences › Chemistry › Organic Chemistry › Chemical Synthesis and Analysis
Keywords
PROTACs, chimeric molecules, SCF ubiquitin ligase, β-TrCP, ubiquitination, protein degradation, targeted protein degradation
MeSH terms
NF-KappaB Inhibitor alpha, Aminopeptidases, Animals, Cell Extracts, Cell Line, Transformed, DNA-Binding Proteins, Humans, Metalloendopeptidases, Ovum, Peptide Synthases, Protein Binding, Recombinant Fusion Proteins, Ubiquitins, Xenopus laevis, I-kappa B Proteins, SKP Cullin F-Box Protein Ligases

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