Evidence for a stereoelectronic effect in human oxygen sensing

Angew Chem Int Ed Engl. 2009;48(10):1784-7. doi: 10.1002/anie.200805427.

Abstract

How PHDs achieve specificity: trans-4-prolyl hydroxylation of the transcription factor HIF occurs with stereochemical retention. Substrate-analogue studies show how the von Hippel Lindau tumor suppressor protein (pVHL) and the oxygen-sensing hydroxylases (PHDs) achieve specificity for hydroxyprolyl/prolyl residues for the C(4)-exo/endo prolyl conformations, respectively.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biosensing Techniques
  • Humans
  • Hypoxia-Inducible Factor 1, alpha Subunit / chemistry*
  • Hypoxia-Inducible Factor 1, alpha Subunit / metabolism
  • Hypoxia-Inducible Factor-Proline Dioxygenases
  • Oxygen / metabolism*
  • Procollagen-Proline Dioxygenase / metabolism*
  • Protein Conformation
  • Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
  • Stereoisomerism
  • Von Hippel-Lindau Tumor Suppressor Protein / metabolism

Substances

  • Hypoxia-Inducible Factor 1, alpha Subunit
  • EGLN1 protein, human
  • Procollagen-Proline Dioxygenase
  • Hypoxia-Inducible Factor-Proline Dioxygenases
  • Von Hippel-Lindau Tumor Suppressor Protein
  • Oxygen