Chimeric chalcone synthase
WebFeb 10, 2024 · A similar chimeric AT-PKS, P168DRAFT_323099 (CfvA in this study), was proposed to be involved in the biosynthesis of chlorflavonin, ... Chalcone synthase (CHS, EC 2.3.1.74) is a key enzyme of the flavonoid/isoflavonoid biosynthesis pathway. Besides being part of the plant developmental program the CHS gene expression is induced in … WebIntroduction of a Chimeric Chalcone Synthase Gene into Petunia Results in Reversible Co-Suppression of Homologous Genes in trans. C. Napoli , C. Lemieux , and R. Jorgensen The Plant Cell. 1990. Find this article
Chimeric chalcone synthase
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WebJan 1, 2006 · Chalcone synthase (CHS; EC 2.3.1.74) is a key enzyme in anthocyanin biosynthesis. ... tobacco plants were transformed with a chimeric construct containing expression cassettes for neomycin ... WebJSTOR Home
WebMay 3, 2011 · Chalcone synthase (CHS, EC 2.3.1.74) is a key enzyme of the flavonoid/isoflavonoid biosynthesis pathway. Besides being part of the plant developmental program the CHS gene expression is induced in plants under stress conditions such as UV light, bacterial or fungal infection. CHS expression causes accumulation of flavonoid and … WebWe attempted to overexpress chalcone synthase (CHS) in pigmented petunia petals by introducing a chimeric petunia CHS gene. Unexpectedly, the introduced gene created a …
WebAbstract. A chimeric gene was constructed containing the light-inducible chalcone synthase (chs) promoter from Antirrhinum majus, the neomycin phosphotransferase structural sequence from Tn5 as a reporter gene (NPTII) and the termination region from chs gene 1 from Petroselinum hortense.This gene was introduced into tobacco plants with … WebSep 12, 2024 · Background Citrus flavonoids are considered as the important secondary metabolites because of their biological and pharmacological activities. Chalcone synthase (CHS) is a key enzyme …
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WebNov 27, 2024 · Architecturally, chalcone synthase (CHS) is considered to be the simplest representative of Type III PKSs. The enzyme is pivotal for phenylpropanoid biosynthesis … read memory stick pro duoWebApr 27, 2009 · This phenomenon was originally described in transgenic petunia in which expression of the chalcone synthase-A(CHS-A) gene, required for the biosynthesis of anthocyanin pigments in the flower, was inhibited by the overexpression of a homologous sense transgene (Napoli et al. 1990). how to stop social securityWebABSTRACT: The participation of O-methyltransferase (COMT) in phenylpropanoid-mediated capsaicinoid biosynthesis has long been proposed. Ferulic acid, a phenylpropanoid … read mercenary enrollment 129WebApr 26, 2024 · Chalcone synthase (CHS) catalyzes the first step of flavonoid biosynthesis by directing carbon flux from general phenylpropanoid metabolism to flavonoid pathway. Despite extensive characterization of its function and transcriptional regulation, the molecular basis governing its posttranslational modification is enigmatic. read merry farmer free onlineWebThe primary product of this enzyme is 4,2',4',6'-tetrahydroxychalcone (also termed naringenin-chalcone or chalcone) which can under specific conditions spontaneously isomerize into naringenin. Catalytic activity 4-coumaroyl-CoA + 2 H+ + 3 malonyl-CoA = 2',4,4',6'-tetrahydroxychalcone + 3 CO2 + 4 CoA PROSITE-ProRule annotation how to stop soliciting callsWebApr 1, 1990 · Abstract. We attempted to overexpress chalcone synthase (CHS) in pigmented petunia petals by introducing a chimeric petunia CHS gene. Unexpectedly, … how to stop solicitation emailsChalcone synthase or naringenin-chalcone synthase (CHS) is an enzyme ubiquitous to higher plants and belongs to a family of polyketide synthase enzymes (PKS) known as type III PKS. Type III PKSs are associated with the production of chalcones, a class of organic compounds found mainly in plants as natural … See more CHS catalysis serves as the initial step for flavonoid biosynthesis. Flavonoids are important plant secondary metabolites that serve various functions in higher plants. These include pigmentation, UV protection, fertility, … See more Subunits CHS exists as a homodimeric protein with each monomer approximately 42-45 kDa in size. Each … See more Metabolic CHS is noncompetitively inhibited by flavanoid pathway products such as naringenin and chalcone naringenin. Despite lack of direct evidence in vivo, flavonoids are believed to accumulate in the cytosol to a … See more CHS belongs to a broader class of enzymes known as type III PKSs. Being the first enzyme of its type to be discovered, all other members are often labeled as “CHS-like.” Most or all of the divergent CHS-like enzymes characterized have arisen from … See more 4-coumaroyl-CoA and three units of malonyl-CoA are converted into three molecules of carbon dioxide, four molecules of coenzyme A and one unit of naringenin chalcone. See more The first step involves a transfer of a coumaroyl moiety from a 4-coumaroyl-CoA starter molecule to Cys164. Next, a series of condensation reactions of three acetate units from malonyl-CoA occurs, each proceeding through an acetyl-CoA carbanion derived … See more CHS, as the first committed step in the flavonoid pathway, facilitate production of flavanoids, isoflavonoid-type phytoalexins and other metabolites to protect the plant from stress. CHS … See more read memory service