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Cell. 2004 Jun 25;117(7):851-3.

Siah proteins, HIF prolyl hydroxylases, and the physiological response to hypoxia.

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  • Howard Hughes Medical Institute, Abramson Family Cancer Research Institute, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA.

Abstract

New evidence suggests that at least two members of the family of hypoxia-inducible factor (HIF) prolyl hydroxylases that regulate HIF stability in response to oxygen (O2) availability are also targeted for proteosome-dependent degradation by the E3 ubiquitin ligases Siah1a and Siah2. This preview examines cellular responses to O2 deprivation (hypoxia) and the complexity of the regulation of the HIF O2 sensing pathway in mammals.

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PMID:
15210106
[PubMed - indexed for MEDLINE]
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