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ENZYME entry: EC

Accepted Name
(+)-alpha-pinene synthase.
Alternative Name(s)
(+)-alpha-pinene cyclase.
Reaction catalysed
Geranyl diphosphate <=> (+)-alpha-pinene + diphosphate
  • Cyclase I of Salvia officinalis (sage) gives about equal parts (+)- alpha-pinene and (+)-camphene, whereas cyclase III gives about equal parts of (+)-alpha-pinene and (+)-beta-pinene.
  • (3R)-linalyl diphosphate can also be used by the enzyme in preference to (3S)-linalyl diphosphate.
  • The 4-pro-R-hydrogen of geranyl diphosphate is lost.
  • With synthase II of Pinus taeda (loblolly pine) (+)-beta-pinene was the only product.
  • See also EC and EC
PRIAM enzyme-specific profiles4.2.3.121
KEGG Ligand Database for Enzyme Nomenclature4.2.3.121
IUBMB Enzyme Nomenclature4.2.3.121
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