Description
Product Characteristics:
Catalyzes the post-translational formation of 4-hydroxyproline in hypoxia-inducible factor (HIF) alpha proteins. Hydroxylates HIF1A at 'Pro-402' and 'Pro-564'. May function as a cellular oxygen sensor and, under normoxic conditions, may target HIF through the hydroxylation for proteasomal degradation via the von Hippel-Lindau ubiquitination complex.
Subcellular location: Cytoplasm
Synonyms: EGLN4, H prolyl hydroxylase PH4, H-PH4, H-prolyl hydroxylase 4, HPH4, HPH-4, Hypoxia inducible factor prolyl 4 hydroxylase, Hypoxia inducible factor prolyl hydroxylase, Hypoxia-inducible factor prolyl hydroxylase 4, P4H TM, P4H with transmembrane domain, P4H-TM, P4htm, P4HTM_HUMAN, PH 4, PH4, PHD4, Proline 4 hydroxylase, Prolyl 4 hydroxylase transmembrane endoplasmic reticulum, Prolyl hydroxlase domain containing 4, Transmembrane prolyl 4-hydroxylase.
Target Information: The product of this gene belongs to the family of prolyl 4-hydroxylases. This protein is a prolyl hydroxylase that may be involved in the degradation of hypoxia-inducible transcription factors under normoxia. It plays a role in adaptation to hypoxia and may be related to cellular oxygen sensing. Alternatively spliced variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]