The Enzyme Database

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EC 1.14.21.12     
Accepted name: (S)-nandinine synthase
Reaction: (S)-scoulerine + NADPH + H+ + O2 = (S)-nandinine + NADP+ + 2 H2O
For diagram of nandinine biosynthesis, click here
Glossary: (S)-scoulerine = (13aS)-3,10-dimethoxy-5,8,13,13a-tetrahydro-6H-isoquino[3,2-a]isoquinoline-2,9-diol
(S)-cheilanthifoline = (6aS)-9-methoxy-6,11,12,14-tetrahydro-2H,6aH-[1,3]dioxolo[4,5-h]isoquino[2,1-b]isoquinolin-8-ol
Other name(s): CYP719A3
Systematic name: (S)-scoulerine,NADPH:oxygen oxidoreductase [(S)-nandinine-forming]
Comments: A cytochrome P-450 heme-thiolate enzyme catalysing an oxidative reaction that does not incorporate oxygen into the product. Forms the methylenedioxy bridge of the protoberberine alkaloid (S)-nandinine by the oxidative ring closure of adjacent phenolic and methoxy groups of (S)-scoulerine. cf. EC 1.14.21.2, (S)-cheilanthifoline synthase, which catalyses a similar reaction at the other side of the (S)-scoulerine molecule, forming (S)-cheilanthifoline.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Ikezawa, N., Iwasa, K. and Sato, F. Molecular cloning and characterization of methylenedioxy bridge-forming enzymes involved in stylopine biosynthesis in Eschscholzia californica. FEBS J. 274 (2007) 1019–1035. [PMID: 17250743]
2.  Diaz Chavez, M.L., Rolf, M., Gesell, A. and Kutchan, T.M. Characterization of two methylenedioxy bridge-forming cytochrome P450-dependent enzymes of alkaloid formation in the Mexican prickly poppy Argemone mexicana. Arch. Biochem. Biophys. 507 (2011) 186–193. [PMID: 21094631]
[EC 1.14.21.12 created 2016]
 
 


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