Cited by 796Cancer, Hypoxia, and MetabolismUbiquitin and proteasome pathwaysErythropoietin and Anemia Treatment

HIF-1α binding to VHL is regulated by stimulus-sensitive proline hydroxylation

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Yu, Fang, White, Sarah B., Zhao, Quan, Lee, Frank S.·2001·Proceedings of the National Academy of Sciences

Abstract

Hypoxia-inducible factor-1α (HIF-1α) 1 is a global transcriptional regulator of the hypoxic response. Under normoxic conditions, HIF-1α is recognized by the von Hippel-Lindau tumor-suppressor protein (VHL), a component of an E3 ubiquitin ligase complex. This interaction thereby promotes the rapid degradation of HIF-1α. Under hypoxic conditions, HIF-1α is stabilized. We have previously shown that VHL binds in a hypoxia-sensitive manner to a 27-aa segment of HIF-1α, and that this regulation depends on a posttranslational modification of HIF-1α. Through a combination of in vivo coimmunoprecipitation assays using VHL and a panel of point mutants of HIF-1α in this region, as well as MS and in vitro binding assays, we now provide evidence that this modification, which occurs under normoxic conditions, is hydroxylation of Pro-564 of HIF-1α. The data furthermore show that this proline hydroxylation is the primary regulator of VHL binding.

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Crossref · 10.1073/pnas.181341498

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  • Hif-1α is hydroxylated on two conserved proline residues by PHD1-3, allowing VHL to bind, ubiquitinate, and target Hif-1α for proteasomal degradation.

    “Hif-1α is hydroxylated on two highly conserved proline residues by prolyl hydroxylase enzymes (PHD1-3), which in turn allows the von Hippel–Lindau protein, an E3 ubiquitin ligase, to bind, ubiquitinate, and target Hif-1α for proteasomal degradation [41–43].”
  • Under normoxic conditions, the VHL-HIF1α interaction is mediated through a hydroxyproline residue on HIF1α.

    “Under normoxic conditions, the VHL–HIF1α interaction is mediated through a hydroxyproline residue on HIF1α [49].”

    From Advances in targeted degradation of endogenous proteins (2019) · cites this paper as [49]

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Authors
Yu, F., White, S. B., Zhao, Q., & Lee, F. S.
Affiliations
  • University of Pennsylvania (US)
  • Harvard University (US)
Corresponding author
Lee, Frank S.
Venue
Proceedings of the National Academy of Sciences
Published
2001-08-14
Volume
98
Issue
17
Pages
9630-9635
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2011562442
Cited by
796
References
22
Citations by year
2026: 21 · 2025: 29 · 2024: 23 · 2023: 38 · 2022: 20 · 2021: 27 · 2020: 27 · 2019: 16 · 2018: 18 · 2017: 22 · 2016: 24 · 2015: 30 · 2014: 32 · 2013: 36 · 2012: 28
FWCI
17.55
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • W. W. Smith Charitable Trust
  • National Institutes of Health (5r01dk055672-04)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK55672)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Health Sciences › Medicine › Hematology › Erythropoietin and Anemia Treatment
Keywords
HIF-1α, von Hippel-Lindau protein, proline hydroxylation, HIF-1α degradation, hypoxia, protein-protein interaction, E3 ubiquitin ligase, post-translational modification, transcriptional regulation
MeSH terms
Amino Acid Sequence, Animals, Chlorocebus aethiops, Cobalt, DNA-Binding Proteins, HeLa Cells, Humans, Hydroxylation, Hydroxyproline, Ligases, Molecular Sequence Data, Nuclear Proteins, Peptide Fragments, Proline, Protein Binding, Protein Processing, Post-Translational, Proteins, Recombinant Fusion Proteins, Transcription Factors, Transfection, Cell Hypoxia, Point Mutation, COS Cells, Tumor Suppressor Proteins, Ubiquitin-Protein Ligases, Macromolecular Substances, Hypoxia-Inducible Factor 1, Von Hippel-Lindau Tumor Suppressor Protein, Hypoxia-Inducible Factor 1, alpha Subunit

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