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De Novo Biosynthesis of p-Coumaric Acid in E. coli with a trans-Cinnamic Acid 4-Hydroxylase from the Amaryllidaceae Plant Lycoris aurea.

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p-Coumaric acid is a commercially available phenolcarboxylic acid with a great number of important applications in the nutraceutical, pharmaceutical, material and chemical industries. p-Coumaric acid has been biosynthesized in some engineered microbes, but the potential of the plant

Detection of Incorporation of p-Coumaric Acid into Photoactive Yellow Protein Variants in Vivo.

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We report the design and characterization of photoactive yellow protein (PYP)-blue fluorescent protein (mTagBFP) fusion constructs that permit the direct assay of reconstitution and function of the PYP domain. These constructs allow for in vivo testing of co-expression systems for enzymatic

Expression of bacterial tyrosine ammonia-lyase creates a novel p-coumaric acid pathway in the biosynthesis of phenylpropanoids in Arabidopsis.

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Some flavonoids are considered as beneficial compounds because they exhibit anticancer or antioxidant activity. In higher plants, flavonoids are secondary metabolites that are derived from phenylpropanoid biosynthetic pathway. A large number of phenylpropanoids are generated from p-coumaric acid,

Production of resveratrol from p-coumaric acid in recombinant Saccharomyces cerevisiae expressing 4-coumarate:coenzyme A ligase and stilbene synthase genes.

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Resveratrol is a well-known polyphenol present in red wine and exerts antioxidative and anti-carcinogenic effects on the human body. To produce resveratrol in a food-grade yeast, the 4-coumarate:coenzyme A ligase gene (4CL1) from Arabidopsis thaliana and stilbene synthase gene (STS) from Arachis

Arabidopsis glucosyltransferases with activities toward both endogenous and xenobiotic substrates.

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Arabidopsis thaliana Heynh. harbors UDP-glucose-dependent glucosyltransferase (UGT; EC 2.4.1.-) activities that are able to glucosylate xenobiotic substrates as a crucial step in their detoxification, similar to other plants. However, it has remained elusive whether side-activities of UGTs acting on

Functional Characterization of Cinnamate 4-hydroxylase from Helianthus annuus Linn Using a Fusion Protein Method

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Sunflower (Helianthus annuus L.) is an important oil crop, the secondary metabolites of it include many compounds such as flavonoids and lignin. However, the research on the biosynthesis of phenolic compounds in sunflowers is still scarce. Cinnamate 4-hydroxylase (C4H) belongs to the cytochrome

Production of curcuminoids from tyrosine by a metabolically engineered Escherichia coli using caffeic acid as an intermediate.

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Curcuminoids are phenylpropanoids with high pharmaceutical potential. Herein, we report an engineered artificial pathway in Escherichia coli to produce natural curcuminoids through caffeic acid. Arabidopsis thaliana 4-coumaroyl-CoA ligase and Curcuma longa diketide-CoA synthase (DCS) and curcumin

Synthesis of rosmarinic acid analogues in Escherichia coli.

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OBJECTIVE To produce rosmarinic acid analogues in the recombinant Escherichia coli BLRA1, harboring a 4-coumarate: CoA ligase from Arabidopsis thaliana (At4CL) and a rosmarinic acid synthase from Coleus blumei (CbRAS). RESULTS Incubation of the recombinant E. coli strain BLRA1 with exogenously

De Novo Biosynthesis of Caffeic Acid from Glucose by Engineered Saccharomyces cerevisiae.

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Caffeic acid is a plant phenolic compound possessing extensive pharmacological activities. Here, we identified that p-coumaric acid 3-hydroxylase from Arabidopsis thaliana was capable of hydroxylating p-coumaric acid to form caffeic acid in Saccharomyces cerevisiae. Then, we introduced a combined

Production of 7-O-methyl aromadendrin, a medicinally valuable flavonoid, in Escherichia coli.

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7-O-Methyl aromadendrin (7-OMA) is an aglycone moiety of one of the important flavonoid-glycosides found in several plants, such as Populus alba and Eucalyptus maculata, with various medicinal applications. To produce such valuable natural flavonoids in large quantity, an Escherichia coli cell

Metabolic profiling of root exudates of Arabidopsis thaliana.

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In addition to accumulating biologically active chemicals, plant roots continuously produce and secrete compounds into their immediate rhizosphere. However, the mechanisms that drive and regulate root secretion of secondary metabolites are not fully understood. To enlighten two neglected areas of

Construction of synthetic pathways for raspberry ketone production in engineered Escherichia coli.

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Raspberry ketone is an important ingredient in the flavor and fragrance industries. Due to its low content in fruits and vegetables, the production of natural raspberry ketone using heterologous synthesis in microbial strains is recently attracting increased attention. In this work, a heterologous

Phenolics from Ageratina adenophora roots and their phytotoxic effects on Arabidopsis thaliana seed germination and seedling growth.

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A bioassay-directed phytochemical study was conducted to investigate potential allelochemicals in the roots of the invasive plant Ageratina adenophora. Eleven phenolic compounds, including seven new ones, 7-hydroxy-8,9-dehydrothymol 9-O-trans-ferulate (1), 7-hydroxythymol 9-O-trans-ferulate (2),

Using unnatural protein fusions to engineer resveratrol biosynthesis in yeast and Mammalian cells.

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Resveratrol is a naturally occurring defense compound produced by a limited number of plants in response to stresses. Besides cardiovascular benefits, this health-promoting compound has been reported to extend life spans in yeasts, flies, worms, and fish. To biosynthesize resveratrol de novo,

CYP98A3 from Arabidopsis thaliana is a 3'-hydroxylase of phenolic esters, a missing link in the phenylpropanoid pathway.

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The 4- and 5-hydroxylations of phenolic compounds in plants are catalyzed by cytochrome P450 enzymes. The 3-hydroxylation step leading to the formation of caffeic acid from p-coumaric acid remained elusive, however, alternatively described as a phenol oxidase, a dioxygenase, or a P450 enzyme, with

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