The Enzyme Database

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EC 1.14.21.3     
Accepted name: berbamunine synthase
Reaction: (S)-N-methylcoclaurine + (R)-N-methylcoclaurine + NADPH + H+ + O2 = berbamunine + NADP+ + 2 H2O
For diagram of reaction, click here
Other name(s): (S)-N-methylcoclaurine oxidase (C-O phenol-coupling)
Systematic name: (S)-N-methylcoclaurine,NADPH:oxygen oxidoreductase (C-O phenol-coupling)
Comments: A heme-thiolate enzyme (P-450). Forms the bisbenzylisoquinoline alkaloid berbamunine by phenol oxidation of N-methylcoclaurine without the incorporation of oxygen into the product. Reaction of two molecules of (R)-N-methylcoclaurine gives the dimer guattagaumerine.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 144941-42-4
References:
1.  Stadler, R. and Zenk, M.H. The purification and characterization of a unique cytochrome P-450 enzyme from Berberis stolifera plant cell cultures. J. Biol. Chem. 268 (1993) 823–831. [PMID: 8380416]
[EC 1.14.21.3 created 1999 as EC 1.1.3.34, transferred 2002 to EC 1.14.21.3]
 
 


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