Engineering Cotton (+)-δ-Cadinene Synthase to an Altered Function: Germacrene D-4-ol Synthase
نویسندگان
چکیده
منابع مشابه
Nucleophilic Water Capture or Proton Loss: Single Amino Acid Switch Converts δ‐Cadinene Synthase into Germacradien‐4‐ol Synthase
δ-Cadinene synthase is a sesquiterpene cyclase that utilises the universal achiral precursor farnesyl diphosphate (FDP) to generate predominantly the bicyclic sesquiterpene δ-cadinene and about 2 % germacradien-4-ol, which is also generated from FDP by the cyclase germacradien-4-ol synthase. Herein, the mechanism by which sesquiterpene synthases discriminate between deprotonation and reaction w...
متن کاملThe amino-terminal segment in the β-domain of δ-cadinene synthase is essential for catalysis.
Despite its distance from the active site the flexible amino-terminal segment (NTS) in the β-domain of the plant sesquiterpene cyclase δ-cadinene synthase (DCS) is essential for active site closure and desolvation events during catalysis.
متن کاملMechanism of Germacradien-4-ol Synthase-Controlled Water Capture.
The sesquiterpene synthase germacradiene-4-ol synthase (GdolS) from Streptomyces citricolor is one of only a few known high-fidelity terpene synthases that convert farnesyl diphosphate (FDP) into a single hydroxylated product. Crystals of unliganded GdolS-E248A diffracted to 1.50 Å and revealed a typical class 1 sesquiterpene synthase fold with the active site in an open conformation. The metal...
متن کاملAntisense Suppression of a (1)-d-Cadinene Synthase Gene in Cotton Prevents the Induction of This Defense Response Gene during Bacterial Blight Infection But Not Its Constitutive Expression
In cotton (Gossypium hirsutum) the enzyme (1)-d-cadinene synthase (CDNS) catalyzes the first committed step in the biosynthesis of cadinane-type sesquiterpenes, such as gossypol, that provide constitutive and inducible protection against pests and diseases. A cotton cDNA clone encoding CDNS (cdn1-C4) was isolated from developing embryos and functionally characterized. Southern analysis showed t...
متن کاملGermacrene D Cyclization: An Ab Initio Investigation
Essential oils that contain large concentrations of germacrene D are typically accompanied by cadinane sesquiterpenoids. The acid-catalyzed cyclization of germacrene D to give cadinane and selinane sesquiterpenes has been computationally investigated using both density functional (B3LYP/6-31G(*)) and post Hartree-Fock (MP2/6-31G(* *)) ab initio methods. The calculated energies are in general ag...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemistry & Biology
سال: 2006
ISSN: 1074-5521
DOI: 10.1016/j.chembiol.2005.10.016