Columbamine oxidase

Columbamine oxidase
Identifiers
EC no.1.21.3.2
CAS no.95329-18-3
Databases
BRENDAenzyme data
ExPASyNiceZyme view
KEGGenzyme entry
MetaCycmetabolic pathway
Rheareactions
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
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PMCarticles
PubMedarticles
NCBIproteins

Columbamine oxidase (EC 1.21.3.2) is an enzyme that catalyzes the chemical reaction that converts the benzylisoquinoline alkaloid, columbamine, into berberine.

2
 
 
O2
2 H2O
Rightward reaction arrow with minor substrate(s) from top left and minor product(s) to top right
 
 
 
2
 

The two substrates of this enzyme are columbamine and oxygen. Its products are berberine and water.[1]

This enzyme is an oxidoreductases, specifically those acting on X-H and Y-H to form an X-Y bond with oxygen as acceptor. The systematic name of this enzyme class is columbamine:oxygen oxidoreductase (cyclizing). This enzyme is also called berberine synthase. This enzyme participates in alkaloid biosynthesis. It employs one cofactor, iron.[2]

References

  1. ↑ Rueffer M, Zenk MH (1985). "Berberine synthesis, the methylenedioxy group forming enzyme in berberine synthesis". Tetrahedron Lett. 26 (2): 201–202. doi:10.1016/S0040-4039(00)61879-8.
  2. ↑ Enzyme 1.21.3.2 at KEGG Pathway Database.