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Literature summary for 4.2.3.107 extracted from
- Biosynthesis of monoterpenes: regio- and stereochemistry of (+)-3-carene biosynthesis (1993), Arch. Biochem. Biophys., 305, 581-587.
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.0028 | - |
(3S)-linalyl diphosphate | pH 7.8, 32°C | Pinus contorta |  |
| 0.0037 | - |
geranyl diphosphate | pH 7.8, 32°C | Pinus contorta | |
| 0.0047 | - |
(3R)-linalyl diphosphate | pH 7.8, 32°C | Pinus contorta | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Pinus contorta | - |
- |
- |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| (3R)-linalyl diphosphate | - |
Pinus contorta | ? + diphosphate | the velocity of the reaction with the (3S)-linalyl enantiomer is 25fold greater than the velocity with the (3R)-enantiomer and twice that of the natural substrate, geranyl diphosphate. Cyclization of the linalyl intermediate is faster than the coupled isomerization and cyclization of the geranyl substrate | ? | |
| (3S)-linalyl diphosphate | - |
Pinus contorta | ? + diphosphate | the velocity of the reaction with the (3S)-linalyl enantiomer is 25fold greater than the velocity with the (3R)-enantiomer and twice that of the natural substrate, geranyl diphosphate. Cyclization of the linalyl intermediate is faster than the coupled isomerization and cyclization of the geranyl substrate | ? | |
| geranyl diphosphate | the H located at C1 in the geranyl substrate resides at C5 of product (+)-car-3-ene. The 5-proR hydrogen is eliminated during cyclopropyl ring closure. Cyclopropyl ring formation occurs via a (4S)-alpha-terpinyl cation derived from the anti-endo-cyclization of a (3S)-linalyl diphosphate intermediate | Pinus contorta | (+)-car-3-ene + diphosphate | - |
? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| (+)-3-carene synthase | - |
Pinus contorta |
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