The Enzyme Database

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Accepted name: 3,9-dihydroxypterocarpan 6a-monooxygenase
Reaction: (6aR,11aR)-3,9-dihydroxypterocarpan + NADPH + H+ + O2 = (6aS,11aS)-3,6a,9-trihydroxypterocarpan + NADP+ + H2O
For diagram of glyceollin biosynthesis (part 2), click here
Other name(s): 3,9-dihydroxypterocarpan 6a-hydroxylase; 3,9-dihydroxypterocarpan 6α-monooxygenase (erroneous)
Systematic name: (6aR,11aR)-3,9-dihydroxypterocarpan,NADPH:oxygen oxidoreductase (6a-hydroxylating)
Comments: Possibly a heme-thiolate protein (P-450). The product of the reaction is the biosynthetic precursor of the phytoalexin glyceollin in soybean.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 92584-16-2
1.  Hagmann, M.-L., Heller, W. and Grisebach, H. Induction of phytoalexin synthesis in soybean. Stereospecific 3,9-dihydroxypterocarpan 6a-hydroxylase from elicitor-induced soybean cell cultures. Eur. J. Biochem. 142 (1984) 127–131. [DOI] [PMID: 6540173]
[EC created 1989]

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