Enzymes
| UniProtKB help_outline | 4 proteins |
| Enzyme class help_outline |
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Reaction participants Show >> << Hide
- Name help_outline (2E)-geranyl diphosphate Identifier CHEBI:58057 (Beilstein: 4549979) help_outline Charge -3 Formula C10H17O7P2 InChIKeyhelp_outline GVVPGTZRZFNKDS-JXMROGBWSA-K SMILEShelp_outline CC(C)=CCC\C(C)=C\COP([O-])(=O)OP([O-])([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 59 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline α-terpinene Identifier CHEBI:10334 (Beilstein: 1853379; CAS: 99-86-5) help_outline Charge 0 Formula C10H16 InChIKeyhelp_outline YHQGMYUVUMAZJR-UHFFFAOYSA-N SMILEShelp_outline CC(C)C1=CC=C(C)CC1 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline diphosphate Identifier CHEBI:33019 (Beilstein: 185088) help_outline Charge -3 Formula HO7P2 InChIKeyhelp_outline XPPKVPWEQAFLFU-UHFFFAOYSA-K SMILEShelp_outline OP([O-])(=O)OP([O-])([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 1,085 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:32563 | RHEA:32564 | RHEA:32565 | RHEA:32566 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Terpene synthases of oregano (Origanum vulgare L.) and their roles in the pathway and regulation of terpene biosynthesis.
Crocoll C., Asbach J., Novak J., Gershenzon J., Degenhardt J.
The aroma, flavor and pharmaceutical value of cultivated oregano (Origanum vulgare L.) is a consequence of its essential oil which consists mostly of monoterpenes and sesquiterpenes. To investigate the biosynthetic pathway to oregano terpenes and its regulation, we identified and characterized sev ... >> More
The aroma, flavor and pharmaceutical value of cultivated oregano (Origanum vulgare L.) is a consequence of its essential oil which consists mostly of monoterpenes and sesquiterpenes. To investigate the biosynthetic pathway to oregano terpenes and its regulation, we identified and characterized seven terpene synthases, key enzymes of terpene biosynthesis, from two cultivars of O. vulgare. Heterologous expression of these enzymes showed that each forms multiple mono- or sesquiterpene products and together they are responsible for the direct production of almost all terpenes found in O. vulgare essential oil. The correlation of essential oil composition with relative and absolute terpene synthase transcript concentrations in different lines of O. vulgare demonstrated that monoterpene synthase activity is predominantly regulated on the level of transcription and that the phenolic monoterpene alcohol thymol is derived from gamma-terpinene, a product of a single monoterpene synthase. The combination of heterologously-expressed terpene synthases for in vitro assays resulted in blends of mono- and sesquiterpene products that strongly resemble those found in vivo, indicating that terpene synthase expression levels directly control the composition of the essential oil. These results will facilitate metabolic engineering and directed breeding of O. vulgare cultivars with higher quantity of essential oil and improved oil composition. << Less
Plant Mol. Biol. 73:587-603(2010) [PubMed] [EuropePMC]
This publication is cited by 8 other entries.
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gamma-Terpinene synthetase: a key enzyme in the biosynthesis of aromatic monoterpenes.
Poulose A.J., Croteau R.
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Hydride shifts in the biosynthesis of the p-menthane monoterpenes alpha-terpinene, gamma-terpinene, and beta-phellandrene.
LaFever R.E., Croteau R.
The biosynthesis of several monoterpenes from the acyclic precursor geranyl pyrophosphate requires the migration of positive charge from the isopropyl side chain into the cyclohexenoid ring of the universal alpha-terpinyl cation intermediate of the reaction. The hydride shifts responsible for char ... >> More
The biosynthesis of several monoterpenes from the acyclic precursor geranyl pyrophosphate requires the migration of positive charge from the isopropyl side chain into the cyclohexenoid ring of the universal alpha-terpinyl cation intermediate of the reaction. The hydride shifts responsible for charge migration in the formation of three p-menthane olefin isomers were examined in a range of plant species: alpha-terpinene in American wormseed, gamma-terpinene in thyme, and (-)-beta-phellandrene in lodgepole pine. The experimental approach utilized soluble cell-free enzyme systems and specifically labeled geranyl substrates, with the determination of the labeling patterns in the resulting cyclic products. The results were consistent with stereoelectronic features of the cyclization and support the general model for monoterpene formation. << Less
Arch Biochem Biophys 301:361-366(1993) [PubMed] [EuropePMC]
This publication is cited by 2 other entries.