Ent-kaurene synthase

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ent-kaurene synthase
EC number
CAS number 9055-64-5
IntEnz IntEnz view
ExPASy NiceZyme view
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / QuickGO

In enzymology, an ent-kaurene synthase (EC is an enzyme that catalyzes the chemical reaction

ent-copalyl diphosphate ent-kaurene + diphosphate

Hence, this enzyme has one substrate, ent-copalyl diphosphate, and two products, ent-kaurene and diphosphate.

This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on phosphates. The systematic name of this enzyme class is ent-copalyl-diphosphate diphosphate-lyase (cyclizing, ent-kaurene-forming). Other names in common use include ent-kaurene synthase B, ent-kaurene synthetase B, ent-copalyl-diphosphate diphosphate-lyase, and (cyclizing). This enzyme participates in diterpenoid biosynthesis.


  • Fall RR, West CA (1971). "Purification and properties of kaurene synthetase from Fusarium moniliforme". J. Biol. Chem. 246 (22): 6913–28. PMID 4331199. 
  • Yamaguchi S, Saito T, Abe H, Yamane H, Murofushi N, Kamiya Y (1996). "Molecular cloning and characterization of a cDNA encoding the gibberellin biosynthetic enzyme ent-kaurene synthase B from pumpkin (Cucurbita maxima L.)". Plant J. 10 (2): 203–13. doi:10.1046/j.1365-313X.1996.10020203.x. PMID 8771778. 
  • Kawaide H, Imai R, Sassa T, Kamiya Y (1997). "Ent-kaurene synthase from the fungus Phaeosphaeria sp. L487. cDNA isolation, characterization, and bacterial expression of a bifunctional diterpene cyclase in fungal gibberellin biosynthesis". J. Biol. Chem. 272 (35): 21706–12. doi:10.1074/jbc.272.35.21706. PMID 9268298. 
  • W, Sassa T; Kawaide, H; Ishizaki, A; Shinoda, S; Otsuka, M; Mitsuhashi, W; Sassa, T (2000). "Cloning of a full-length cDNA encoding ent-kaurene synthase from Gibberella fujikuroi: functional analysis of a bifunctional diterpene cyclase". Biosci. Biotechnol. Biochem. 64 (3): 660–4. doi:10.1271/bbb.64.660. PMID 10803977.