title: Oriented immobilization of galactose oxidase to bead and magnetic bead cellulose and poly(HEMA-co-EDMA) and magnetic poly(HEMA-co-EDMA) microspheres.
abstract: In order to obtain an active and stable oxidation reactor for daily use in biochemical laboratory we decided to immobilize galactose oxidase orientedly through a carbohydrate chain to the magnetic carriers. We used hydrazide derivatives of non-magnetic and magnetic bead cellulose and of magnetic and non-magnetic poly(HEMA-co-EDMA) microspheres. Activation of the enzyme molecules was done by sodium periodate in the presence of supplements (fucose, CuSO4, catalase). Orientedly immobilized galactose oxidase presents high storage stability and lower susceptibility to inappropriate microenvironmental conditions. Reactor reactivated by three pulses of D-galactose retained practically 100% of its native activity after 6 months. The positive properties of both magnetic carriers were entirely confirmed.
authors.affiliation: Department of Biological and Biochemical Sciences, University of Pardubice, Czech Republic. zuzana.bilkova@upce.cz
authors.forename: Zuzana
authors.initials: Z
authors.lastname: Bílková
authors.forename: Marcela
authors.initials: M
authors.lastname: Slováková
authors.forename: Antonín
authors.initials: A
authors.lastname: Lycka
authors.forename: Daniel
authors.initials: D
authors.lastname: Horák
authors.forename: Jirí
authors.initials: J
authors.lastname: Lenfeld
authors.forename: Jaroslava
authors.initials: J
authors.lastname: Turková
authors.forename: Jaroslav
authors.initials: J
authors.lastname: Churácek
mesh_terms: D000818:Animals; D002482:Cellulose / Q000737:chemistry*; D004800:Enzymes, Immobilized / Q000737:chemistry*; D005692:Galactose Oxidase / Q000737:chemistry*; D007074:Immunoglobulin G / Q000737:chemistry; D008280:Magnetics; D008689:Methacrylates / Q000737:chemistry*; D008863:Microspheres; D019906:Nuclear Magnetic Resonance, Biomolecular; D010504:Periodic Acid / Q000737:chemistry; D011102:Polyhydroxyethyl Methacrylate / Q000737:chemistry; D013552:Swine
chemical_list: D004800:Enzymes, Immobilized; D007074:Immunoglobulin G; D008689:Methacrylates; D010504:Periodic Acid; D011102:Polyhydroxyethyl Methacrylate; C004919:ethylene dimethacrylate; D002482:Cellulose; C009288:metaperiodate; D005692:Galactose Oxidase