Structural basis for binding of hypoxia-inducible factor to the oxygen-sensing prolyl hydroxylases.
The oxygen-dependent hydroxylation of proline residues in the alpha subunit of hypoxia-inducible transcription factor (HIFalpha) is central to the hypoxic response in animals. Prolyl hydroxylation of HIFalpha increases its binding to the von Hippel-Lindau protein (pVHL), so signaling for degradation via the ubiquitin-proteasome system. The HIF prolyl hydroxylases (PHDs, prolyl hydroxylase domain enzymes) are related to the collagen prolyl hydroxylases, but form unusually stable complexes with...Expand abstract
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