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Literature summary extracted from

  • Savage, T.J.; Ichii, H.; Hume, S.D.; Little, D.B.; Croteau, R.
    Monoterpene synthases from Gymnosperms and Angiosperms: stereospecificity and inactivation by cysteinyl- and arginyl-directed modifying reagents (1994), Arch. Biochem. Biophys., 269, 4012-4020.
No PubMed abstract available

Inhibitors

EC Number Inhibitors Comment Organism Structure
4.2.3.107 N-ethylmaleimide
-
Pinus contorta
4.2.3.107 Phenylglyoxal inactivation Pinus contorta

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
4.2.3.107 0.0015
-
(3S)-linalyl diphosphate pH 6.5, 31°C Pinus contorta
4.2.3.107 0.0017
-
(3R)-linalyl diphosphate pH 6.5, 31°C Pinus contorta
4.2.3.107 0.0048
-
geranyl diphosphate pH 6.5, 31°C Pinus contorta

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
4.2.3.109 Cs+ or Rb+, K+, NH4+, required Pinus contorta
4.2.3.109 Fe2+
-
Pinus contorta
4.2.3.109 K+ or Rb+, Cs+, NH4+, required Pinus contorta
4.2.3.109 Mn2+
-
Pinus contorta
4.2.3.109 additional information divalent cation absolutely required, Mg2+ is ineffective. Monovalent cation absolutely required, Li+ and Na+ are ineffective Pinus contorta
4.2.3.109 NH4+ or Rb+, Cs+, K+, required Pinus contorta
4.2.3.109 Rb+ or K+, Cs+, NH4+, required Pinus contorta

Organism

EC Number Organism UniProt Comment Textmining
4.2.3.107 Pinus contorta
-
-
-
4.2.3.109 Pinus contorta
-
-
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
4.2.3.107 (3R)-linalyl diphosphate
-
Pinus contorta myrcene + diphosphate
-
?
4.2.3.107 (3S)-linalyl diphosphate
-
Pinus contorta (+)-car-3-ene + diphosphate more than 99.9% optically pure ?
4.2.3.107 geranyl diphosphate reaction proceeds via an enzyme-bound (3S)-linalyl diphosphate intermediate Pinus contorta (+)-car-3-ene + diphosphate more than 99.9% optically pure ?
4.2.3.109 geranyl diphosphate
-
Pinus contorta (-)-sabinene + diphosphate products are 51.4% (-)-sabinene, 45.8% terpinolene, 2.8% alpha-pinene ?

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
4.2.3.107 7.8
-
-
Pinus contorta
4.2.3.109 7.8
-
-
Pinus contorta

pH Range

EC Number pH Minimum pH Maximum Comment Organism
4.2.3.109 6.6
-
half-maximal activity Pinus contorta
4.2.3.109 8.5
-
half-maximal activity Pinus contorta

IC50 Value

EC Number IC50 Value IC50 Value Maximum Comment Organism Inhibitor Structure
4.2.3.107 0.05
-
pH 6.5, 31°C Pinus contorta N-ethylmaleimide