IUBMB Enzyme Nomenclature


Accepted name: oryzalexin D synthase

Reaction: ent-sandaracopimaradien-3β-ol + [reduced NADPH—hemoprotein reductase] + O2 = oryzalexin D + [oxidized NADPH—hemoprotein reductase] + H2O

For diagram of reaction click here.

Glossary: oryzalexin D = ent-sandaracopimaradiene-3β,7α-diol = (3R,4aR,4bS,7S,9S,10aS)-7-ethenyl-1,1,4a,7-tetramethyl-1,2,3,4,4a,4b,5,6,7,9,10,10a-dodecahydrophenanthren-2,9-diol
ent-sandaracopimaradien-3β-ol = (3R,4aR,4bR,7S,10aS)-7-ethenyl-1,1,4a,7-tetramethyl-1,2,3,4,4a,4b,5,6,7,9,10,10a-dodecahydrophenanthren-2-ol

Other name(s): CYP76M8

Systematic name: ent-sandaracopimaradien-3β-ol,[reduced NADPH—hemoprotein reductase]:oxygen oxidoreductase (oryzalexin D forming)

Comments: A cytochrome P-450 (heme-thiolate) protein. Isolated from Oryza sativa (rice). Oryzalexin D is a phytoalexin.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:


1. Wu, Y., Wang, Q., Hillwig, M.L. and Peters, R.J. Picking sides: distinct roles for CYP76M6 and CYP76M8 in rice oryzalexin biosynthesis. Biochem. J. 454 (2013) 209-216. [PMID: 23795884]

[EC created 2014 as EC, transferred 2018 to EC]

Return to EC 1.14.14 home page
Return to EC 1.14 home page
Return to EC 1 home page
Return to Enzymes home page
Return to IUBMB Biochemical Nomenclature home page