Oxidoreductases;
Acting on paired donors, with incorporation or reduction of molecular oxygen;
With oxidation of a pair of donors resulting in the reduction of O2 to two molecules of water
A P-450 (heme-thiolate) enzyme. The enzyme, characterized from Narcissus pseudonarcissus (daffodil), forms the two enantiomers of the Amaryllidacea alkaloid noroxomaritidine by catalysing intramolecular oxidative para-para' phenol coupling. The oxidation involves molecular oxygen without its incorporation into the product.