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(3R)-linalyl diphosphate
(+)-alpha-pinene + diphosphate
(3S)-linalyl diphosphate
(+)-alpha-pinene + diphosphate
-
-
products are 9% (+)-alpha-pinene, 9% camphene, 34% limonene, 28%% terpinolene, 11% myrcene, 2% cis-ocimene, 6% trans-ocimene
-
?
(3S)-linalyl diphosphate
(-)-alpha-pinene + diphosphate
-
(3R)-enantiomer is preferred over (3S)-enantiomer
products are (-)-camphene and (-)alpha-pinene
-
?
(RS)-alpha-terpinyl diphosphate
limonene + diphosphate
-
-
about 90% limonene, 10% terpinolene
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
geranyl diphosphate
alpha-pinene + diphosphate
neryl diphosphate
(+)-alpha-pinene + diphosphate
additional information
?
-
(3R)-linalyl diphosphate

(+)-alpha-pinene + diphosphate
-
-
products are 62% (+)-alpha-pinene, 6% camphene, 11% limonene, 7% terpinolene, 10% myrcene, 1% cis-ocimene, 4% trans-ocimene
-
?
(3R)-linalyl diphosphate
(+)-alpha-pinene + diphosphate
-
(3R)-enantiomer is preferred over (3S)-enantiomer
products are (+)-camphene and (+)alpha-pinene
-
?
geranyl diphosphate

(+)-alpha-pinene + diphosphate
-
products are 39% (R)-(+)-limonene, 22% terpinolene, 16% (1R,5S)-(+)-camphene, 14% (1R,5R)-(+)-alpha-pinene, 8% beta-myrcene and traces of alpha-phellandrene. Preferential formation of the (+)-enantiomers with 94% enantiomeric purity for (1R,5R)-(+)-alpha-pinene. Product pattern changes to 46% limonene, 9% terpinolene, 23% alpha-pinene, 5% beta-myrcene and 4% alpha-phellandrene, when Mn2+ is supplied instead of Mg2+
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
91.7% (+)-alpha-pinene
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
88.2% of products
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
-
main product
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
products are 97% (+)-alpha-pinene, 3% (-)-alpha-pinene
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
-
31% (+)-alpha-pinene, 29% (+)-camphene, 36% (+)-alpha-pinene, 45% (+)beta-pinene
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
-
products are (+)-camphene and (+)alpha-pinene
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
-
products are (+)-camphene, (+)-alpha-pinene and (+)-limonene
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
-
products are 25% (+)-alpha-pinene, 25% (+)-camphene, 43% (+)-limonene, and 7% myrcene. Reaction in organic solvent gives the same olefin distribution as in aqueous buffer
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
-
products are 49% (+)-alpha-pinene, 30% camphene, 10% limonene, 5% terpinolene, 6% myrcene
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
-
products of cyclase I are (+)-alpha-pinene and (+)-camphene, products of cyclase III are (+)-alpha-pinene and (+)-beta-pinene
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
-
reaction proceeds stereoselectively to (+)-borneol, which is oxidised to (+)-camphor. Configuration at C1 of geranyl pyrophosphate is retained in the enzymatic transformations. The 1-proR-hydrogen of neryl diphosphate gives rise to the exo-alpha-hydrogen of (+)-camphor, and the 1-proS-hydrogen to the endo-alpha-hydrogen, whereas the 1-proS-hydrogen of this precursor gives rise to the exo-alpha-hydrogen of the enantiomeric (-)-camphor, and the 1-proR-hydrogen to the endo-alpha-hydrogen. The configuration at C1 of neryl pyrophosphate is inverted in the cyclizations to alpha- and beta-pinene, and fully consistent with the cyclization model
-
?
geranyl diphosphate
(+)-alpha-pinene + diphosphate
-
-
reaction proceeds via (3R)-linalyl diphosphate and the (4R)-alpha-terpinyl cation. Products are (+)-alpha-pinene, and lesser amounts of related olefins
-
?
geranyl diphosphate

alpha-pinene + diphosphate
-
93% alpha-pinene plus 4% limonene, 1.6% alpha-phellandrene, 1,1% alpha-terpinolene
-
?
geranyl diphosphate
alpha-pinene + diphosphate
-
90.6% alpha-pinene plus 6% limonene, 1.7% alpha-phellandrene, 1,6% alpha-terpinolene
-
?
geranyl diphosphate
alpha-pinene + diphosphate
-
-
-
?
geranyl diphosphate
alpha-pinene + diphosphate
-
-
-
?
neryl diphosphate

(+)-alpha-pinene + diphosphate
-
-
products are (+)-camphene and (+)alpha-pinene
-
?
neryl diphosphate
(+)-alpha-pinene + diphosphate
-
-
products are 14% (+)-alpha-pinene, 9% camphene, 62% limonene, 8% terpinolene, 6% myrcene
-
?
additional information

?
-
no substrate: geranylgeranyl diphosphate
-
-
?
additional information
?
-
no substrate: geranylgeranyl diphosphate
-
-
?
additional information
?
-
GC-MS analysis reaction product analysis. Enzyme PlPIN employs geranyl diphosphate as a specific substrate to produce alpha-pinene as a unique product
-
-
?
additional information
?
-
-
each product exhibits the same absolute configuration at the center derived from C-6 of geranyl diphosphate, i e. the isopropylidene-substituted carbon
-
-
?
additional information
?
-
-
enzymes removes the C4-proR-hydrogen of the substrate, the C3 proton trans to the dimethyl bridge of the pinyl nucleus, with a stereoselectivity exceeding 94% in the formation of (+)-alpha-pinene
-
-
?
additional information
?
-
-
product distribution varies with deuterium substitution at C4 and C10 of substrate. Kinetic isotope effects strongly indicate multiple bicyclic olefin production through the partitioning of common carbocation intermediates
-
-
?
additional information
?
-
-
reaction follows a cisoid,anti-endo-pattern. In the case of geranyl diphosphate, a preassociation mechanism is suggested in which optimum folding of the terpenyl chain precedes the initial ionization step. The alternate substrates are ionized by the cyclases prior to their achieving the optimum orientation for bicyclization
-
-
?
additional information
?
-
enzyme AvTPS1 (AvPS or pinene synthase) catalyzes geranyl diphosphate to form alpha-pinene and beta-pinene, the enzyme produces 63% beta-pinene as the major product
-
-
?
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NH4+
may substitute for K+ for optimum activity
additional information
-
not effective: Li+, Na+, Rb+, Cs+
K+

required for optimum activity, NH4+ may substitute
K+
-
required, Km value 7.5 mM
Mg2+

or Mn2+, required, optimum concentration 50 mM
Mg2+
or Mn2+, required. 67% of reaction velocity with Mn2+
Mg2+
-
or Mn2+, required. Mg2+ is preferred over Mn2+
Mg2+
-
preferred divalent cation, Km value about 3 mM
Mn2+

or Mg2+, required, optimum concentration 0.2 mM. 68% of the efficiency with Mg2+, with change in product pattern to 46% limonene, 9% terpinolene, 23% alpha-pinene, 5% beta-myrcene and 4% alpha-phellandrene, for Mn2+
Mn2+
-
absolutely required
Mn2+
or Mg2+, required. Mn2+ is preferred
Mn2+
-
or Mn2+, required. Mg2+ is preferred over Mn2+, Mn2+ shows 60-70% of the activity with Mg2+
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0.001 - 0.002
(+)-(1R)-N,N,4-trimethyl-3-cyclohexenamine
0.0058 - 0.0092
(+)-dimethyl-[(1R)-4-methylcyclohex-3-en-1-yl]sulfonium iodide
0.0007 - 0.0011
(-)-(1S)-N,N,4-trimethyl-3-cyclohexenamine
0.004 - 0.0071
(-)-dimethyl-[(1S)-4-methylcyclohex-3-en-1-yl]sulfonium iodide
0.001
(+)-(1R)-N,N,4-trimethyl-3-cyclohexenamine

-
pH 5.8, 31°C, presence of diphosphate
0.002
(+)-(1R)-N,N,4-trimethyl-3-cyclohexenamine
-
pH 5.8, 31°C
0.0058
(+)-dimethyl-[(1R)-4-methylcyclohex-3-en-1-yl]sulfonium iodide

-
pH 5.8, 31°C, presence of diphosphate
0.0092
(+)-dimethyl-[(1R)-4-methylcyclohex-3-en-1-yl]sulfonium iodide
-
pH 5.8, 31°C
0.0007
(-)-(1S)-N,N,4-trimethyl-3-cyclohexenamine

-
pH 5.8, 31°C, presence of diphosphate
0.0011
(-)-(1S)-N,N,4-trimethyl-3-cyclohexenamine
-
pH 5.8, 31°C
0.004
(-)-dimethyl-[(1S)-4-methylcyclohex-3-en-1-yl]sulfonium iodide

-
pH 5.8, 31°C, presence of diphosphate
0.0071
(-)-dimethyl-[(1S)-4-methylcyclohex-3-en-1-yl]sulfonium iodide
-
pH 5.8, 31°C
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diisopropyl ether
-
enzyme is active in hexane, hexadecane, diisopropyl ether, or distilled water, and gives rise to the same olefin distribution of 25% (+)-alpha-pinene, 25% (+)-camphene 43% (+)-limonene, 7% myrcene
hexadecane
-
enzyme is active in hexane, hexadecane, diisopropyl ether, or distilled water, and gives rise to the same olefin distribution of 25% (+)-alpha-pinene, 25% (+)-camphene 43% (+)-limonene, 7% myrcene
hexane
-
enzyme is active in hexane, hexadecane, diisopropyl ether, or distilled water, and gives rise to the same olefin distribution of 25% (+)-alpha-pinene, 25% (+)-camphene 43% (+)-limonene, 7% myrcene. Reactions run in hexane generate product at roughly one-third the rate of companion assays in which the lyophilized protein is rehydrated in distilled water. Relative proportion of alpha-pinene in product distribution is optimal in presence of 5-10% water
additional information
-
enzyme is active in hexane, hexadecane, diisopropyl ether, or distilled water, and gives rise to the same olefin distribution of 25% (+)-alpha-pinene, 25% (+)-camphene 43% (+)-limonene, 7% myrcene
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Monoterpene biosynthesis: Isotope effects associates with bicyclic olefin formation catalyzed by pinene synthases from sage (Salvia officinalis)
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308
477-487
1994
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brenda
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Biosynthesis of monoterpenes: Enantioselectivity in the enzymatic cyclization of (+)- and (-)-linalyl pyrophospahte to (+)- and (-) pinene and (+)- and (-)-camphene
J. Biol. Chem.
263
10063-10071
1988
Salvia officinalis
brenda
Croteau, R.; Satterwhite, D.M.
Biosynthesis of monoterpenes: Stereochemical implications of acyclic and monocyclic olefin formation by (+)- and (-)-pinene cyclases from sage
J. Biol. Chem.
264
15309-15315
1989
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Croteau, R.; Satterwhite, D.M.; Wheeler, C.J.; Felton, N.M.
Biosynthesis of monoterpenes: Stereochemistry of the enzymatic cyclization of geranyl pyrophosphate to (+)-alpha- and (-)beta-pinene
J. Biol. Chem.
264
2075-2080
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brenda
Pyun, H.J.; Wagschal, K.C.; Jung, D.; Coates, R.M.; Croteau, R.
Stereochemistry of the proton elimination in the formation of (+)- and (-)-alpha-pinene by monoterpene cyclases from sage (Salvia officinalis)
Arch. Biochem. Biophys.
308
488-496
1994
Salvia officinalis
brenda
Landmann, C.; Fink, B.; Festner, M.; Dregus, M.; Engel, K.H.; Schwab, W.
Cloning and functional characterization of three terpene synthases from lavender (Lavandula angustifolia)
Arch. Biochem. Biophys.
465
417-429
2007
Lavandula angustifolia (Q2XSC6)
brenda
Wheeler, C.J.; Croteau, R.
Terpene cyclase catalysis in organic solvent/minimal water media: demonstration and optimization of (+)-alpha-pinene cyclase activity
Arch. Biochem. Biophys.
248
429-434
1986
Salvia officinalis
brenda
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Isolation and characterization of an active-site peptide from a monoterpene cyclase labeled with a mechanism-based inhibitor
Arch. Biochem. Biophys.
317
149-155
1995
Salvia officinalis
brenda
Phillips, M.; Savage, T.; Croteau, R.
Monoterpene synthases of loblolly pine (Pinus taeda) produce pinene isomers and enantiomers
Arch. Biochem. Biophys.
372
197-204
1999
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brenda
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411
267-276
2003
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brenda
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Pinene cyclases I and II. Two enzymes from sage (Salvia officinalis) which catalyze stereospecific cyclizations of geranyl pyrophosphate to monoterpene olefins of opposite configuration
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Salvia officinalis
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13
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brenda
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153
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brenda
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brenda
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brenda