IUBMB Enzyme Nomenclature

EC 4.2.3.127

Accepted name: β-copaene synthase

Reaction: (2E,6E)-farnesyl diphosphate = β-copaene + diphosphate

For diagram of reaction click here.

Other name(s): cop4

Systematic name: (2E,6E)-farnesyl-diphosphate diphosphate-lyase (cyclizing, β-copaene-forming)

Comments: Isolated from the fungus Coprinus cinereus. The enzyme also forms (+)-δ-cadinene, β-cubebene, (+)-sativene and traces of several other sequiterpenoids [1-3]. β-Copaene is formed in the presence of Mg2+ but not Mn2+ [2]. See EC 4.2.3.13, (+)-δ-cadinene synthase, EC 4.2.3.128, β-cubebene synthase, and EC 4.2.3.129, (+)-sativene synthase.

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

References:

1. Agger, S., Lopez-Gallego, F. and Schmidt-Dannert, C. Diversity of sesquiterpene synthases in the basidiomycete Coprinus cinereus. Mol. Microbiol. 72 (2009) 1181-1195. [PMID: 19400802]

2. Lopez-Gallego, F., Agger, S.A., Abate-Pella, D., Distefano, M.D. and Schmidt-Dannert, C. Sesquiterpene synthases Cop4 and Cop6 from Coprinus cinereus: catalytic promiscuity and cyclization of farnesyl pyrophosphate geometric isomers. Chembiochem. 11 (2010) 1093-1106. [PMID: 20419721]

3. Lopez-Gallego, F., Wawrzyn, G.T. and Schmidt-Dannert, C. Selectivity of fungal sesquiterpene synthases: role of the active site's H-1α loop in catalysis. Appl. Environ. Microbiol. 76 (2010) 7723-7733. [PMID: 20889795]

[EC 4.2.3.127 created 2012]


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