Synonyms : Peptidyl Prolyl Hydroxylase, Procollagen Prolyl 4-Hydroxylase, Prolyl 4-Hydroxylase, Prolyl Hydroxylase, 4-Dioxygenase, Proline, 2-Oxoglutarate, 4-Hydroxylase, Procollagen Prolyl, 4-Hydroxylase, Prolyl, Dioxygenase, Procollagen-Proline, Hydroxylase, Proline