Accepted name: terpentetriene synthase
Reaction: terpentedienyl diphosphate = terpentetriene + diphosphate
Other name(s): Cyc2 (ambiguous)
Systematic name: terpentedienyl-diphosphate diphosphate-lyase (terpentetriene-forming)
Comments: Requires Mg2+ for maximal activity but can use Mn2+, Fe2+ or Co2+ to a lesser extent [2]. Following on from EC, terpentedienyl-diphosphate synthase, this enzyme completes the transformation of geranylgeranyl diphosphate (GGDP) into terpentetriene, which is a precursor of the diterpenoid antibiotic terpentecin. Farnesyl diphosphate can also act as a substrate.
1.  Dairi, T., Hamano, Y., Kuzuyama, T., Itoh, N., Furihata, K. and Seto, H. Eubacterial diterpene cyclase genes essential for production of the isoprenoid antibiotic terpentecin. J. Bacteriol. 183 (2001) 6085–6094. [PMID: 11567009]
2.  Hamano, Y., Kuzuyama, T., Itoh, N., Furihata, K., Seto, H. and Dairi, T. Functional analysis of eubacterial diterpene cyclases responsible for biosynthesis of a diterpene antibiotic, terpentecin. J. Biol. Chem. 277 (2002) 37098–37104. [PMID: 12138123]
3.  Eguchi, T., Dekishima, Y., Hamano, Y., Dairi, T., Seto, H. and Kakinuma, K. A new approach for the investigation of isoprenoid biosynthesis featuring pathway switching, deuterium hyperlabeling, and 1H NMR spectroscopy. The reaction mechanism of a novel streptomyces diterpene cyclase. J. Org. Chem. 68 (2003) 5433–5438. [PMID: 12839434]
[EC created 2008]

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