The Enzyme Database

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Accepted name: β-amyrin 24-hydroxylase
Reaction: (1) β-amyrin + [reduced NADPH—hemoprotein reductase] + O2 = 24-hydroxy-β-amyrin + [oxidized NADPH—hemoprotein reductase] + H2O
(2) sophoradiol + [reduced NADPH—hemoprotein reductase] + O2 = 24-hydroxysophoradiol + [oxidized NADPH—hemoprotein reductase] + H2O
For diagram of soyasapogenol biosynthesis, click here
Glossary: 24-hydroxy-β-amyrin = olean-12-ene-3β,24-diol
24-hydroxysophoradiol = soyasapogenol B
Other name(s): sophoradiol 24-hydroxylase; CYP93E1
Systematic name: β-amyrin,[reduced NADPH—hemoprotein reductase]:oxygen oxidoreductase (24-hydroxylating)
Comments: A cytochrome P-450 (heme-thiolate) protein. Found in plants and participates in the biosynthesis of soybean saponins.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Shibuya, M., Hoshino, M., Katsube, Y., Hayashi, H., Kushiro, T. and Ebizuka, Y. Identification of β-amyrin and sophoradiol 24-hydroxylase by expressed sequence tag mining and functional expression assay. FEBS J. 273 (2006) 948–959. [DOI] [PMID: 16478469]
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