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ENZYME entry: EC

Accepted Name
(+)-car-3-ene synthase.
Alternative Name(s)
3-carene cyclase.
Reaction catalysed
Geranyl diphosphate <=> (+)-car-3-ene + diphosphate
  • The enzyme reacts with (3S)-linalyl diphosphate twice as rapidly as geranyl diphosphate, but 25 times as rapidly as (3R)-linalyl diphosphate.
  • It is assumed that (3S)-linalyl diphosphate is normally formed as an enzyme bound intermediate in the reaction.
  • In the reaction the 5-pro-R hydrogen of geranyl diphosphate is eliminated during cyclopropane ring formation.
  • In Picea abies (Norway spruce) and Picea sitchensis (Sitka spruce) terpinolene is also formed.
  • See EC
  • (+)-car-3-ene is associated with resistance of Picea sitchensis (Sitka spruce) to white pine weevil.
PRIAM enzyme-specific profiles4.2.3.107
KEGG Ligand Database for Enzyme Nomenclature4.2.3.107
IUBMB Enzyme Nomenclature4.2.3.107
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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.2.3.-
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