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Tricin 7-O-glucoside
Tricin is a chemical compound. It is an O-methylated flavone, a type of flavonoid. It can be found in rice bran and sugarcane. Glycosides * Tricin 4'-glucoside (Tricin-4'-O-beta-D-glucopyranaoside, CAS number 71855-50-0) * Tricin 5-glucoside (Tricin 5-O-beta-D-glucopyranoside, CAS number 32769-00-9) * Tricin 7-O-glucoside (Tricin 7-O-beta-D-glucopyranoside, CAS number 32769-01-0) Biosynthesis The biosynthesis of flavones has not yet been elucidated in full; however, most of the mechanistic and enzymatic steps have been discovered and studied. In biosynthesizing tricin, there is first stepwise addition of malonyl CoA via the polyketide pathway and p-coumaroyl Coa via the phenylpropanoid pathway. These additions are mediated by the sequential action of chalcone synthase and chalcone isomerase to yield naringenin chalcone and the flavanone, naringenin, respectively. CYP93G1 of the CYP450 superfamily in rice then desaturates naringenin into apigenin. After this step, it is pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tricetin
Tricetin is a flavone, a type of flavonoid. It is a rare aglycone found in the pollen of members of the Myrtaceae, subfamily Leptospermoideae, such as ''Eucalyptus globulus''. This compound shows anticancer effects on human breast adenocarcinoma MCF-7 cells. Moreover. a potent anti-inflammatory effect of tricetin has also been demonstrated in a model of acute pancreatitis. This observation was explained by the compound's radical scavenging effects, its inhibitory effect on the DNA damage sensor enzyme poly (ADP-ribose) polymerase-1 (PARP1) and PARP1-mediated cell death and suppression of inflammatory gene expression. See also * Tricin synthase produces tricin Tricin is a chemical compound. It is an O-methylated flavone, a type of flavonoid. It can be found in rice bran and sugarcane. Glycosides * Tricin 4'-glucoside (Tricin-4'-O-beta-D-glucopyranaoside, CAS number 71855-50-0) * Tricin 5-glucoside (T ... or tricetin 3′,5′-dimethyl ether * Tricetin 3′,4′,5′-''O'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
O-methylated Flavone
The O-methylated flavonoids or methoxyflavonoids are flavonoids with methylations on hydroxyl groups (methoxy bonds). O-methylation has an effect on the solubility of flavonoids. Enzymes O-methylated flavonoids formation implies the presence of specific O-methyltransferase An O-methyltransferase (OMT) is a type of methyltransferase enzyme transferring a methyl group on a molecule. Examples are : * Acetylserotonin O-methyltransferase * Apigenin 4'-O-methyltransferase * Caffeate O-methyltransferase * Caffeoyl-CoA ... (OMT) enzymes which accept a variety of substrates. Those enzymes mediate the O-methylation on a specific hydroxyl group, like on 4' (example in ''Catharanthus roseus'') or 3' (example in rice) positions. Those positions can be Arene substitution patterns, ortho, meta, para and there can be a special 3-O-methyltransferase for the 3-OH position. Calamondin orange (''Citrus mitis'') exhibits all of those activities. Plant enzymes * Apigenin 4'-O-methyltransferase * 8 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tricin 4'-glucoside
Tricin is a chemical compound. It is an O-methylated flavone, a type of flavonoid. It can be found in rice bran and sugarcane. Glycosides * Tricin 4'-glucoside (Tricin-4'-O-beta-D-glucopyranaoside, CAS number 71855-50-0) * Tricin 5-glucoside (Tricin 5-O-beta-D-glucopyranoside, CAS number 32769-00-9) * Tricin 7-O-glucoside (Tricin 7-O-beta-D-glucopyranoside, CAS number 32769-01-0) Biosynthesis The biosynthesis of flavones has not yet been elucidated in full; however, most of the mechanistic and enzymatic steps have been discovered and studied. In biosynthesizing tricin, there is first stepwise addition of malonyl CoA via the polyketide pathway and p-coumaroyl Coa via the phenylpropanoid pathway. These additions are mediated by the sequential action of chalcone synthase and chalcone isomerase to yield naringenin chalcone and the flavanone, naringenin, respectively. CYP93G1 of the CYP450 superfamily in rice then desaturates naringenin into apigenin. After this step, it is pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tricin 5-glucoside
Tricin is a chemical compound. It is an O-methylated flavone, a type of flavonoid. It can be found in rice bran and sugarcane. Glycosides * Tricin 4'-glucoside (Tricin-4'-O-beta-D-glucopyranaoside, CAS number 71855-50-0) * Tricin 5-glucoside (Tricin 5-O-beta-D-glucopyranoside, CAS number 32769-00-9) * Tricin 7-O-glucoside (Tricin 7-O-beta-D-glucopyranoside, CAS number 32769-01-0) Biosynthesis The biosynthesis of flavones has not yet been elucidated in full; however, most of the mechanistic and enzymatic steps have been discovered and studied. In biosynthesizing tricin, there is first stepwise addition of malonyl CoA via the polyketide pathway and p-coumaroyl Coa via the phenylpropanoid pathway. These additions are mediated by the sequential action of chalcone synthase and chalcone isomerase to yield naringenin chalcone and the flavanone, naringenin, respectively. CYP93G1 of the CYP450 superfamily in rice then desaturates naringenin into apigenin. After this step, it is p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tricin 7-O-glucoside
Tricin is a chemical compound. It is an O-methylated flavone, a type of flavonoid. It can be found in rice bran and sugarcane. Glycosides * Tricin 4'-glucoside (Tricin-4'-O-beta-D-glucopyranaoside, CAS number 71855-50-0) * Tricin 5-glucoside (Tricin 5-O-beta-D-glucopyranoside, CAS number 32769-00-9) * Tricin 7-O-glucoside (Tricin 7-O-beta-D-glucopyranoside, CAS number 32769-01-0) Biosynthesis The biosynthesis of flavones has not yet been elucidated in full; however, most of the mechanistic and enzymatic steps have been discovered and studied. In biosynthesizing tricin, there is first stepwise addition of malonyl CoA via the polyketide pathway and p-coumaroyl Coa via the phenylpropanoid pathway. These additions are mediated by the sequential action of chalcone synthase and chalcone isomerase to yield naringenin chalcone and the flavanone, naringenin, respectively. CYP93G1 of the CYP450 superfamily in rice then desaturates naringenin into apigenin. After this step, it is pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CYP450
Cytochromes P450 (CYPs) are a superfamily of enzymes containing heme as a cofactor that functions as monooxygenases. In mammals, these proteins oxidize steroids, fatty acids, and xenobiotics, and are important for the clearance of various compounds, as well as for hormone synthesis and breakdown. In 1963, Estabrook, Cooper, and Rosenthal described the role of CYP as a catalyst in steroid hormone synthesis and drug metabolism. In plants, these proteins are important for the biosynthesis of defensive compounds, fatty acids, and hormones. CYP enzymes have been identified in all kingdoms of life: animals, plants, fungi, protists, bacteria, and archaea, as well as in viruses. However, they are not omnipresent; for example, they have not been found in ''Escherichia coli''. , more than 300,000 distinct CYP proteins are known. CYPs are, in general, the terminal oxidase enzymes in electron transfer chains, broadly categorized as P450-containing systems. The term "P450" is derived fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biosynthesis Of Tricin
Biosynthesis is a multi-step, enzyme-catalyzed process where substrates are converted into more complex products in living organisms. In biosynthesis, simple compounds are modified, converted into other compounds, or joined to form macromolecules. This process often consists of metabolic pathways. Some of these biosynthetic pathways are located within a single cellular organelle, while others involve enzymes that are located within multiple cellular organelles. Examples of these biosynthetic pathways include the production of lipid membrane components and nucleotides. Biosynthesis is usually synonymous with anabolism. The prerequisite elements for biosynthesis include: precursor compounds, chemical energy (e.g. ATP), and catalytic enzymes which may require coenzymes (e.g.NADH, NADPH). These elements create monomers, the building blocks for macromolecules. Some important biological macromolecules include: proteins, which are composed of amino acid monomers joined via peptide bonds, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavonolignan
Flavonolignans are natural phenols composed of a part flavonoid and a part phenylpropane. Examples Flavonolignans identified in ''Silybum marianum'' (milk thistle) silymarin complex include silibinin, silychristin, silydianin, dehydrosilybin, deoxysilycistin, deoxysilydianin, silandrin, silybinome, silyhermin and neosilyhermin and can be produced in vitro. Silibinin is found in the roots of S. marianum while silyamandin can be found in the fruit. Hydnocarpin can be found naturally in '' Onopordon corymbosum'' and can be synthesised. Scutellaprostin A, B, C, D, E and F can be isolated from '' Scutellaria prostrata'' and can also be synthesized. Hydnowightin can be isolated from '' Hydnocarpus wightiana'' seeds. Three flavonolignans derived from the flavone tricin have been isolated from the herb ''Avena sativa''. Palstatin has been isolated from the Amazon tree '' Hymeneae palustris''. Salcolin A and salcolin B can be found in '' Salsola collina''. Rhodiol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avena Sativa
The oat (''Avena sativa''), sometimes called the common oat, is a species of cereal grain grown for its seed, which is known by the same name (usually in the plural, unlike other cereals and pseudocereals). While oats are suitable for human consumption as oatmeal and rolled oats, one of the most common uses is as livestock feed. Oats are a nutrient-rich food associated with lower blood cholesterol when consumed regularly. Avenins are oat gluten proteins, similar to gliadin in wheat. They can trigger celiac disease in a small proportion of people. Also, oat products are frequently contaminated by other gluten-containing grains, mainly wheat and barley. Origin The wild ancestor of ''Avena sativa'' and the closely related minor crop '' A. byzantina'' is '' A. sterilis''. ''A. sterilis'' is a wild oat that is naturally hexaploid. Genetic evidence shows the ancestral forms of ''A. sterilis'' grew in the Fertile Crescent of the Near East. Oats are usually thought to have emerged a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
