Prolyl 4-hydroxylases, the key enzymes of collagen biosynthesis.

Abstract

The collagen prolyl 4-hydroxylases (P4Hs), enzymes residing within the endoplasmic reticulum, have a central role in the biosynthesis of collagens. In addition, cytoplasmic P4Hs play a critical role in the regulation of the hypoxia-inducible transcription factor HIFalpha. Collagen and HIF P4Hs constitute enzyme families as several isoenzymes have been… (More)

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