Category:TP5
From Metabolomics.JP
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Cisoid synthase first isomerizes C2-C3 double bond to produce the neutral (3'R')- or (3'S')-nerolidyl diphosphate (enzyme-bound) and then ionizes it. | Cisoid synthase first isomerizes C2-C3 double bond to produce the neutral (3'R')- or (3'S')-nerolidyl diphosphate (enzyme-bound) and then ionizes it. | ||
| − | {| | + | {| class="wikitable" style="text-align:right" |
| − | ! | + | ! Substrate || Type || Intermediate |
| − | | | + | |
| − | | | + | |
|- | |- | ||
| − | | | + | | rowspan="2"| Farnesyl diphosphate (FPP)<br/>[[Image:Farnesyl_diphosphate.png]] |
| − | | | + | | Transoid synthase on (2-''trans'',6-''trans'')-FPP<br/> |
| + | | [[Image:Farnesyl_cation.png]] | ||
| + | |- | ||
| + | | Cisoid synthase on (2-''cis'',6-''trans'')-FPP<br/> | ||
| + | | (nerolidyl cation)<br/>[[Image:Nerolidyl_cation.png]] | ||
|} | |} | ||
| − | |||
Latest revision as of 13:17, 22 July 2014
Contents |
[edit] Sesquiterpene (C15)
[edit] Ring configuration
[edit] Germacrane
[edit] Sesquiterpenes
[edit] Biosynthesis
[edit] Overview
Two major classes of terpene synthases exist: "transoid" and "cisoid" synthase. Transoid synthase directly ionizes ('trans','trans')-farnesyl diphosphate, whereas Cisoid synthase first isomerizes C2-C3 double bond to produce the neutral (3'R')- or (3'S')-nerolidyl diphosphate (enzyme-bound) and then ionizes it.
| Substrate | Type | Intermediate |
|---|---|---|
Farnesyl diphosphate (FPP)
|
Transoid synthase on (2-trans,6-trans)-FPP |
|
| Cisoid synthase on (2-cis,6-trans)-FPP |
(nerolidyl cation)
|
- References
[edit] Sesquiterpene Synthase
| farnesyl diphosphate | ||||||||
| | ||||||||
| farnesyl cation |
| |||||||
(E,E)-germacradiene
|
eudesmane (= selinane)
|
vetispiradienyl cation | ||||||
eremophilane (= 14(10→5) abeoeudesmane)
| ||||||||
| guaiane |
cycloguaiane | |||||||
| (E,E)-humulane |
caryophyllane | |||||||
| africanane | ||||||||
| drimane |
||||||||
| nerolidyl cation |
bisabolane |
chamigrane ... 6,11-cyclobisabolane | ||||||
cuparane (= 7,11-cyclobisabolane)
|
trichothecane [1]
| |||||||
| (Z,E)-germacradiene |
cadinane | |||||||
| (Z,E)-humulane |
himachalane | |||||||
| protoilludane |
hirsutane | |||||||
| cycloheptenyl cation |
daucane (= carotane) | |||||||
| furodysin | ||||||||
| others |
|
|||||||
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