Linoleic Acid Isomerase
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Genetic modification of sugarcane (Saccharum spp.) aiming the production of conjugated fatty acids / Modificação genética de cana-de-açúcar (Saccharum spp.) visando à produção de ácidos graxos conjugados
Plantas transgênicas constituem interessantes alternativas para a produção de compostos com elevado valor agregado como polímeros industriais, proteínas farmacológicas e lipídios nutracêuticos. Como candidata à biofábrica, a cana-de-açúcar (Saccharum spp.) apresenta características agronômicas favoráveis, além de versatilidade de matéria-pri
Publicado em: 2010
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2. Hydrogenation of Unsaturated Fatty Acids by Treponema (Borrelia) Strain B25, a Rumen Spirochete1
The time course of hydrogenation of linoleic acid to trans-11-octadecenoic acid was observed in a growing culture of Treponema (Borrelia) strain B25. A conjugated fatty acid, cis-9, trans-11-octadecadienoic acid, was identified as an intermediate in the process. The isomerase responsible for the conversion of linoleic acid to the conjugated fatty acid was fo
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3. Metabolism of Linoleic Acid by Barley Lipoxygenase and Hydroperoxide Isomerase 1
The oxidation of linoleic acid in incubation mixtures containing extracts of barley lipoxygenase and hydroperoxide isomerase, and the production of these enzymes in quiescent and germinated barley, were investigated. The ratio of 9-hydroperoxylinoleic acid to 13-hydroperoxylinoleic acid was higher for incubation mixtures containing extracts of quiescent barl
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4. Effect of Linoleic Acid Concentration on Conjugated Linoleic Acid Production by Butyrivibrio fibrisolvens A38
Butyrivibrio fibrisolvens A38 inocula were inhibited by as little as 15 μM linoleic acid (LA), but growing cultures tolerated 10-fold more LA before growth was inhibited. Growing cultures did not produce significant amounts of cis-9, trans-11 conjugated linoleic acid (CLA) until the LA concentration was high enough to inhibit biohydrogenation, growth was in
American Society for Microbiology.
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5. Hydroperoxide Isomerase: A New Enzyme of Lipid Metabolism
An enzyme has been isolated from flaxseed (Linum usitatissimum) which utilizes the product of lipoxidase for its substrate. The enzyme, termed hydroperoxide isomerase, converts the conjugated diene hydroperoxide of linoleic acid to the corresponding monoenoic ketohydroxy fatty acid. The structure of the latter has been determined by ultraviolet, infrared, an
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6. Lipoxygenase, Hydroperoxide Isomerase, and Hydroperoxide Cyclase in Young Cotton Seedlings 1
Lipoxygenase was demonstrated in young cotton seedlings. It catalyzed the oxygenation of linoleic or linolenic acid, predominantly at carbon 13, and its molecular weight was estimated by gel filtration to be 100,000. Hydroperoxide isomerase was also present and converted hydroperoxylinoleic or hydroperoxylinolenic acid to α- or γ-ketols. The enzyme utilize
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7. Erythrocyte lipids in triose-phosphate isomerase deficiency.
Marked hypoalphalipoproteinemia was found together with relatively low serum cholesterol, triacylglycerol, and LDL levels in a triose-phosphate isomerase (TPI; D-glyceraldehyde-3-phosphate ketol-isomerase, EC 5.3.1.1)-deficient Hungarian family, especially in the two compound-heterozygote brothers. Apart from a slight increase in palmitic and stearic acids t
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8. The lipoxygenase gene ALOXE3 implicated in skin differentiation encodes a hydroperoxide isomerase
Lipoxygenase (LOX) enzymes form fatty acid hydroperoxides used in membrane remodeling and cell signaling. Mammalian epidermal LOX type 3 (eLOX3) is distinctive in totally lacking this typical oxygenase activity. Surprisingly, genetic evidence has linked mutations in eLOX3 or a colocalizing enzyme, 12R-LOX, to disruption of the normal permeability barrier
National Academy of Sciences.
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9. Biotransformation of Unsaturated Long-Chain Fatty Acids by Eubacterium lentum
Eubacterium lentum (33 strains) isomerized the 12-cis double bond of C18 fatty acids with cis double bonds at C-9 and C-12 into an 11-trans double bond before reduction of the 9-cis double bond. The 14-cis double bond of homo-γ-linolenic acid was isomerized by 29 strains into a 13-trans double bond. The same strains isomerized the 14-cis double bond of arac