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Side 1 fra 48 resultater
Flavonoid glycosides from leaves and straw of Oryza sativa and their effects of cytotoxicity on a macrophage cell line and allelopathic on weed germination.
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Five new flavonoids namely, 5-hydroxy-6-isoprenyl-7,4'-dimethoxyflavonol-3-O-β-d-arabinofuranoside (1), 5,7-dihydroxy-4'-methoxyflavone-7-O-β-d-arabinopyranosyl-2''-n-decan-1'''-oate (2), 3-butanoyl-5,6,8-trihydroxy-7,4'-dimethoxyflavonol--5-O-β-d-glucopyranoside (3), 7,
Identification of Quantitative Trait Loci for the Concentrations of Phenylpropanoid Glycosides in Brown Rice.
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Rice (Oryza sativa L.) is a staple food for most of the world's population, as it is eaten by nearly half of its inhabitants. Phenylpropanoid glycosides derived from plants have various biomedical effects. The comparison of the concentrations of the four major phenylpropanoid glycosides in
Efficient enzyme formulation promotes Leloir glycosyltransferases for glycoside synthesis
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Sugar nucleotide-dependent (Leloir) glycosyltransferases are powerful catalysts for glycoside synthesis. Their applicability can be limited due to elaborate production of enzyme preparations deployable in biocatalytic processes. Here, we show that efficient enzyme formulation promotes
Expression and enzymatic properties of rice (Oryza sativa L.) monolignol β-glucosidases.
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Monolignol glucosides and their β-glucosidases are found in monocots, but their biological roles are unclear. Phylogenetic analysis of rice (Oryza sativa L.) glycoside hydrolase family GH1 β-glucosidases indicated that Os4BGlu14, Os4BGlu16, and Os4BGlu18 are closely related to known monolignol
Expression of rice (Oryza sativa L. var. Nipponbare) alpha-galactosidase genes in Escherichia coli and characterization.
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Two putative alpha-galactosidase genes from rice (Oryza sativa L. var. Nipponbare) belonging to glycoside hydrolase family 27 were cloned and expressed in Escherichia coli. These enzymes showed alpha-galactosidase activity and were purified by Ni Sepharose column chromatography. Two purified
Expression, purification, crystallization and preliminary X-ray analysis of rice (Oryza sativa L.) Os4BGlu12 beta-glucosidase.
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Rice (Oryza sativa L.) Os4BGlu12, a glycoside hydrolase family 1 beta-glucosidase (EC 3.2.1.21), was expressed as a fusion protein with an N-terminal thioredoxin/His(6) tag in Escherichia coli strain Origami B (DE3) and purified with subsequent removal of the N-terminal tag. Native Os4BGlu12 and its
Genome-Wide Assessment of Polygalacturonases-Like (PGL) Genes of Medicago truncatula, Sorghum bicolor, Vitis vinifera and Oryza sativa Using Comparative Genomics Approach.
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The polygalacturonases (PG) is one of the important members of pectin-degrading glycoside hydrolases of the family GH28. In plants, PG represents multigene families associated with diverse processes. In the present study, an attempt has been made to investigate the diversity of PG genes among
Metabolomic analysis of two rice (Oryza sativa) varieties exposed to 2, 2', 4, 4'-tetrabromodiphenyl ether.
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Polybrominated diphenyl ethers (PBDEs) are toxic chemicals widely distributed in the environment, but few studies are available on their potential toxicity to rice at metabolic level. Therefore we exposed ten rice (Oryza sativa) varieties to 2,2',4,4'-tetrabromodiphenyl ether (BDE-47), a predominant
Structural and enzymatic characterization of Os3BGlu6, a rice beta-glucosidase hydrolyzing hydrophobic glycosides and (1->3)- and (1->2)-linked disaccharides.
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Glycoside hydrolase family 1 (GH1) beta-glucosidases play roles in many processes in plants, such as chemical defense, alkaloid metabolism, hydrolysis of cell wall-derived oligosaccharides, phytohormone regulation, and lignification. However, the functions of most of the 34 GH1 gene products in rice
Metabolite profiling of the short-term responses of rice leaves (Oryza sativa cv. Ilmi) cultivated under different LED lights and its correlations with antioxidant activities.
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Metabolite profiling of rice leaves (Oryza sativa cv. Ilmi) was performed to investigate the short-term responses to different light-emitting diode (LED) lights, blue (B), green (G), red (R), white (W), shade (S), by using gas chromatography-ion trap-mass spectrometry (GC-IT-MS) and
Evolutionary Analysis of GH3 Genes in Six Oryza Species/Subspecies and Their Expression under Salinity Stress in Oryza sativa ssp. japonica.
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Glycoside Hydrolase 3 (GH3), a member of the Auxin-responsive gene family, is involved in plant growth, the plant developmental process, and various stress responses. The GH3 gene family has been well-studied in Arabidopsis thaliana and Zea mays. However, the evolution of
Black rice (Oryza sativa L.) extract modulates ultraviolet-induced expression of matrix metalloproteinases and procollagen in a skin cell model.
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Exposure of the skin to ultraviolet (UV) radiation causes extracellular matrix (ECM) collapse in the dermis, owing to an increase in matrix metalloproteinase (MMP) production in both the epidermis and dermis, and a decrease in type I collagen expression in the dermis. Recently, black rice (Oryza
Crystal structure of α-amylase from Oryza sativa: molecular insights into enzyme activity and thermostability.
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AmyI-1 is an α-amylase from Oryza sativa (rice) and plays a crucial role in degrading starch in various tissues and at various growth stages. This enzyme is a glycoprotein with an N-glycosylated carbohydrate chain, a unique characteristic among plant α-amylases. In this study, we report the first
A stress-induced rice (Oryza sativa L.) beta-glucosidase represents a new subfamily of glycosyl hydrolase family 5 containing a fascin-like domain.
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GH5BG, the cDNA for a stress-induced GH5 (glycosyl hydrolase family 5) beta-glucosidase, was cloned from rice (Oryza sativa L.) seedlings. The GH5BG cDNA encodes a 510-amino-acid precursor protein that comprises 19 amino acids of prepeptide and 491 amino acids of mature protein. The protein was
Annotation and comparative analysis of the glycoside hydrolase genes in Brachypodium distachyon.
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BACKGROUND
Glycoside hydrolases cleave the bond between a carbohydrate and another carbohydrate, a protein, lipid or other moiety. Genes encoding glycoside hydrolases are found in a wide range of organisms, from archea to animals, and are relatively abundant in plant genomes. In plants, these
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