Cited by 1,558Cancer, Hypoxia, and MetabolismKruppel-like factors researchErythropoietin and Anemia Treatment

Asparagine Hydroxylation of the HIF Transactivation Domain: A Hypoxic Switch

Lando, David, Peet, Daniel J., Whelan, Dean A., Gorman, Jeffrey J., Whitelaw, Murray L.·2002·Science

Abstract

The hypoxia-inducible factors (HIFs) 1α and 2α are key mammalian transcription factors that exhibit dramatic increases in both protein stability and intrinsic transcriptional potency during low-oxygen stress. This increased stability is due to the absence of proline hydroxylation, which in normoxia promotes binding of HIF to the von Hippel–Lindau (VHL tumor suppressor) ubiquitin ligase. We now show that hypoxic induction of the COOH-terminal transactivation domain (CAD) of HIF occurs through abrogation of hydroxylation of a conserved asparagine in the CAD. Inhibitors of Fe(II)- and 2-oxoglutarate–dependent dioxygenases prevented hydroxylation of the Asn, thus allowing the CAD to interact with the p300 transcription coactivator. Replacement of the conserved Asn by Ala resulted in constitutive p300 interaction and strong transcriptional activity. Full induction of HIF-1α and -2α, therefore, relies on the abrogation of both Pro and Asn hydroxylation, which during normoxia occur at the degradation and COOH-terminal transactivation domains, respectively.

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Crossref · 10.1126/science.1068592

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Authors
Lando, D., Peet, D. J., Whelan, D. A., Gorman, J. J., & Whitelaw, M. L.
Affiliations
  • Adelaide University (AU)
  • Commonwealth Scientific and Industrial Research Organisation (AU)
Corresponding author
Whitelaw, Murray L.
Venue
Science
Published
2002-02
Volume
295
Issue
5556
Pages
858-861
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1973092951
Cited by
1,558
References
28
Citations by year
2026: 25 · 2025: 31 · 2024: 34 · 2023: 46 · 2022: 46 · 2021: 48 · 2020: 43 · 2019: 50 · 2018: 50 · 2017: 48 · 2016: 58 · 2015: 58 · 2014: 58 · 2013: 67 · 2012: 58
FWCI
49.10
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Kruppel-like factors research
  • Health Sciences › Medicine › Hematology › Erythropoietin and Anemia Treatment
Keywords
hypoxia-inducible factor, HIF-1α, HIF-2α, proline hydroxylation, transactivation domain, p300 coactivator, protein stability, 2-oxoglutarate-dependent dioxygenase, transcriptional activation, hypoxia
MeSH terms
Endothelial PAS Domain-Containing Protein 1, Amino Acid Sequence, Animals, Asparagine, Cell Line, Humans, Mixed Function Oxygenases, Hydroxylation, Molecular Sequence Data, Mutation, Oxygen, Proline, Recombinant Fusion Proteins, Mass Spectrometry, Transcription Factors, Transcriptional Activation, Trans-Activators, Cell Hypoxia, Protein Structure, Tertiary, Amino Acid Substitution, Mice, Basic Helix-Loop-Helix Transcription Factors, Basic Helix-Loop-Helix Proteins, Hypoxia-Inducible Factor 1, alpha Subunit

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