Category:TP5
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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" |
− | ! Type || | + | ! Substrate || Type || Intermediate |
− | | | + | | rowspan="3"| Farnesyl diphosphate (FPP)<br/>[[Image:Farnesyl_diphosphate.png]] |
− | |(2-'trans',6-'trans')- | + | | Transoid synthase on (2-''trans'',6-''trans'')-FPP<br/> |
+ | | [[Image:Farnesyl_cation.png]] | ||
|- | |- | ||
− | | Cisoid synthase | + | | Cisoid synthase on (2-''cis'',6-''trans'')-FPP<br/> |
− | + | | (nerolidyl cation)<br/>[[Image:Nerolidyl_cation.png]] | |
|} | |} | ||
− | |||
Revision as of 13:16, 22 July 2014
Contents |
Sesquiterpene (C15)
Ring configuration
Germacrane
Sesquiterpenes
Biosynthesis
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
Sesquiterpene Synthase
farnesyl diphosphate![]() | ||||||||
![]() | ||||||||
farnesyl cation![]() |
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(E,E)-germacradiene![]() |
eudesmane (= selinane)![]() |
vetispiradienyl cation![]() | ||||||
eremophilane (= 14(10→5) abeoeudesmane)![]()
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guaiane![]() |
cycloguaiane | |||||||
(E,E)-humulane![]() |
caryophyllane![]() | |||||||
africanane![]() | ||||||||
drimane![]() |
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nerolidyl cation![]() |
bisabolane![]() |
chamigrane ... 6,11-cyclobisabolane![]() | ||||||
cuparane (= 7,11-cyclobisabolane)![]()
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trichothecane [1]![]()
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(Z,E)-germacradiene![]() |
cadinane![]() | |||||||
(Z,E)-humulane![]() |
himachalane![]() | |||||||
protoilludane![]() |
hirsutane![]() | |||||||
cycloheptenyl cation![]() |
daucane (= carotane)![]() | |||||||
furodysin![]() | ||||||||
others |
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