Component of the monoterpenoid indole alkaloids (MIAs, e.g. echitovenine, tabersonine, lochnericine, 19-hydroxytabersonine and horhammericine) biosynthetic pathway; MIAs are used in cancer treatment and other medical applications (PubMed:31009114). Cytochrome P450 catalyzing the hydroxylation of (+)-vincadifformine to (+)-minovincinine (PubMed:31009114). (+)-vincadifformine + O2 + reduced [NADPH--hemoprotein reductase] = (+)-minovincinine + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] Alkaloid biosynthesis. Accumulates progressively in roots. Belongs to the cytochrome P450 family.