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- W2009281452 abstract "L'utilisation des déshydrogénases nécessite la mise au point d'une méthode d'immobilisation et de stabilisation préservant l'activité enzymatique d'une part et le recyclage en continu des cofacteurs pyridiniques d'autre part. Nous proposons une méthode d'immobilisation de l'alcool déshydrogénase et de l'hydroxystéroïde déshydrogénase en membrane protéique. Dans ce dernier cas, l'enzyme stabilisée peut fonctionner dans les solvants organiques. Le cofacteur est greffé au niveau du site actif de l'enzyme et régénéré sur place par l'intermédiaire d'un transporteur d'électrons, le phénazine méthosulfate. Les phénomènes de vieillissement du système dus à la production d'ions superoxydes sont atténués par l'immobilisation simultanée de superoxyde dismutase. One of the limiting steps in the further development of enzyme technology is the regeneration of cofactors, especially the pyridinic nucleotide cofactors. Immobilization of alcohol dehydrogenase and steroid dehydrogenase is described. In the last case stabilized enzymes could work in non aqueous solvents. Co-enzyme molecules are bound in the immediate vicinity of the active site of the enzyme. Cofactor regeneration was performed with an electron carrier (Phenazine methosulfate). Ageing phenomena were observed. The co-immobilization of superoxide dismutase gives rise to an increase of stability." @default.
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- W2009281452 date "1980-06-01" @default.
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- W2009281452 title "Cofactor regeneration in immobilized enzyme systems: chemical grafting of functional NAD in the active site of dehydrogenases" @default.
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- W2009281452 doi "https://doi.org/10.1016/s0300-9084(80)80163-5" @default.
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