. "\"A procollagen-proline 4-dioxygenase complex that contains alpha subunits of the type I isoform; its activity is readily inhibited by poly(L-proline).\" [PMID:14500733, PMID:7753822]" . . "procollagen-proline 4-dioxygenase complex, alpha(I) type" . "procollagen-proline, 2-oxoglutarate-4-dioxygenase complex, alpha(I) type" . . "prolyl 4-hydroxylase complex (alpha(I)-type)" .