The Enzyme Database

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Accepted name: (–)-4′-demethyl-deoxypodophyllotoxin 4-hydroxylase
Reaction: (–)-4′-demethyldeoxypodophyllotoxin + [reduced NADPH—hemoprotein reductase] + O2 = (–)-4′-demethylepipodophyllotoxin + [oxidized NADPH—hemoprotein reductase] + H2O
Glossary: (–)-4′-demethyldeoxypodophyllotoxin = (5R,5aR,8aR)-5-(4-hydroxy-3,5-dimethoxyphenyl)-5,8,8a,9-tetrahydrofuro[3′,4′:6,7]naphtho[2,3-d][1,3]dioxol-6(5aH)-one
(–)-4′-demethylepipodophyllotoxin = (5R,5aR,8aR,9S)-9-hydroxy-5-(4-hydroxy-3,5-dimethoxyphenyl)-5,8,8a,9-tetrahydrofuro[3′,4′:6,7]naphtho[2,3-d][1,3]dioxol-6(5aH)-one
Other name(s): CYP82D61 (gene name)
Systematic name: (–)-deoxypodophyllotoxin,[reduced NADPH—hemoprotein reductase]:oxygen oxidoreductase (4-hydroxylating)
Comments: A cytochrome P-450 (heme-thiolate) protein characterized from the plant Sinopodophyllum hexandrum. The enzyme produces the direct precursor to etoposide, a potent anticancer drug. It can also act on (–)-deoxypodophyllotoxin with lower efficiency.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
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. [DOI] [PMID: 26359402]
[EC created 2016 as EC, transferred 2018 to EC]

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