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EC 5.5.1.15 Details
EC number
5.5.1.15
Accepted name
terpentedienyl-diphosphate synthase
Reaction
geranylgeranyl diphosphate = terpentedienyl diphosphate
Other name(s)
terpentedienol diphosphate synthase, Cyc1, clerodadienyl diphosphate synthase, terpentedienyl-diphosphate lyase (decyclizing)
Systematic name
terpentedienyl-diphosphate lyase (ring-opening)
Comment
Requires Mg2+. Contains a DXDD motif, which is a characteristic of diterpene cylases whose reactions are initiated by protonation at the 14,15-double bond of geranylgeranyl diphosphate (GGDP) [2]. The triggering proton is lost at the end of the cyclization reaction [3]. The product of the reaction, terpentedienyl diphosphate, is the substrate for EC 4.2.3.36, terpentetriene synthase and is a precursor of the diterpenoid antibiotic terpentecin.
History
created 2008
EC Tree
1.13.11.7 created 1965 as EC 1.13.1.7, transferred 1972 to EC 1.13.11.7, deleted 1980
1.13.11.21 created 1972, deleted 2001
1.13.12.10 created 1989, modified 1999, deleted 2001