Accepted name: bursehernin 5′-monooxygenase
Reaction: (–)-bursehernin + [reduced NADPH—hemoprotein reductase] + O2 = (–)-5′-demethylyatein + [oxidized NADPH—hemoprotein reductase] + H2O
Glossary: (–)-bursehernin = (3R,4R)-4-(2H-1,3-benzodioxol-5-ylmethyl)-3-[(3,4-dimethoxyphenyl)methyl]oxolan-2-one
(–)-5′-demethylyatein = (3R,4R)-4-(2H-1,3-benzodioxol-5-ylmethyl)-3-[(3-hydroxy-4,5-dimethoxyphenyl)methyl]oxolan-2-one
(–)-yaetin = (3R,4R)-4-(2H-1,3-benzodioxol-5-ylmethyl)-3-[(3,4,5-trimethoxyphenyl)methyl]oxolan-2-one
Other name(s): CYP71CU1 (gene name); bursehernin 5′-hydroxylase
Systematic name: (–)-bursehernin,[reduced NADPH—hemoprotein reductase]:oxygen oxidoreductase (5′-hydroxylating)
Comments: A cytochrome P-450 (heme-thiolate) protein characterized from the plant Sinopodophyllum hexandrum. The enzyme is involved in the biosynthetic pathway of podophyllotoxin, a non-alkaloid toxin lignan whose derivatives are important anticancer drugs.
1.  Lau, W. and Sattely, E.S. Six enzymes from mayapple that complete the biosynthetic pathway to the etoposide aglycone. Science 349 (2015) 1224–1228. [PMID: 26359402]
[EC created 2016 as EC, transferred 2018 to EC]