IUBMB Enzyme Nomenclature


Accepted name: glyceollin synthase

Reaction: 2-(or 4-)dimethylallyl-(6aS,11aS)-3,6a,9-trihydroxypterocarpan + NADPH + H+ + O2 = glyceollin + NADP+ + 2 H2O

For diagram click here.

Other Name(s): dimethylallyl-3,6a,9-trihydroxypterocarpan cyclase

Systematic name: 2-(or 4-)dimethylallyl-(6aS,11aS)-3,6a,9-trihydroxypterocarpan,NADPH:oxygen oxidoreductase (cyclizing)

Comments: A heme-thiolate protein (P-450). Glyceollins II and III are formed from 2-dimethylallyl-(6aS,11aS)-3,6a,9-trihydroxypterocarpan whereas glyceollin I is formed from the 4-isomer.

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


1. Welle, R. and Grisebach, H. Induction of phytoalexin synthesis in soybean: enzymatic cyclization of prenylated pterocarpans to glyceollin isomers. Arch. Biochem. Biophys. 263 (1988) 191-198. [PMID: 3369863]

[EC created 2004]

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