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Single molecular catalysis of a redox enzyme on nanoelectrodes
Faraday Discussions, 2016Due to a high turnover coefficient, redox enzymes can serve as current amplifiers which make it possible to explore their catalytic mechanism by electrochemistry at the level of single molecules. On modified nanoelectrodes, the voltammetric behavior of a horseradish peroxidase (HRP) catalyzed hydroperoxide reduction no longer presents a continuous ...
Lianhuan, Han +5 more
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Coimmobilization of a redox enzyme and a cofactor regeneration system
Chemical Communications, 2006The coimmobilization of nitrobenzene nitroreductase and glucose-6-phosphate dehydrogenase in silica particles enables the continuous conversion of nitrobenzene to hydroxylaminobenzene with NADPH recycling.
Lorena, Betancor +3 more
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Kinetics of Redox Polymer-Mediated Enzyme Electrodes
Journal of the American Chemical Society, 2008Oxygen-reducing enzyme electrodes are prepared from laccase of Trametes versicolor and a series of osmium-based redox polymer mediators covering a range of redox potentials from 0.11 to 0.85 V. Experimentally obtained current density generated by the film electrodes is analyzed using a one-dimensional numerical model to obtain kinetic parameters.
Joshua W, Gallaway +1 more
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1985
The study of redox enzymes in plasma membranes is at the stage equivalent to looking at distant mountains at dawn through binoculars. Fog in the valleys obscures everything except the peaks. What is really there will only be known when the fog is blown away and the mountains stand isolated. Some of the peaks perchance may not be real.
F. L. Crane, H. Löw, M. G. Clark
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The study of redox enzymes in plasma membranes is at the stage equivalent to looking at distant mountains at dawn through binoculars. Fog in the valleys obscures everything except the peaks. What is really there will only be known when the fog is blown away and the mountains stand isolated. Some of the peaks perchance may not be real.
F. L. Crane, H. Löw, M. G. Clark
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Redox labelled avidin for enzyme sensor architectures
Biosensors and Bioelectronics, 2003Conjugates of avidin with ferrocene and with microperoxidase 8 have been used as electrochemically active molecular building blocks. Assemblies of the conjugates with biotinylated glucose oxidase or lactate oxidase on gold electrodes were tested as enzyme sensors for glucose and lactate.
Padeste, Celestino +3 more
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Electrical Microengineering of Redox Enzymes
1994Abstract : Enzymes made of electrically insulating proteins were made electron conducting through incorporation of electron relaying redox centers. The redox centers were covalently bound to amino acids of proteins, particularly to lysine amines, 1,2 or to peripheral oligosaccharides of glycoproteins, of enzymes.
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Modeling Manganese Redox Enzymes
1997Manganese is an essential element in many biological processes. Two functional values can be distinguished; the MnII as a Lewis acid, like divalent ions, Magnesium, Calcium, Zinc and in higher oxidation states(MnIII, MnIV) as an oxidation catalyst, like Copper, Iron, Cobalt. Manganese redox enzymes1 with manganese in oxidation states 2+, 3+ and 4+ are:
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[52] Peroxisomal redox enzymes
1978Publisher Summary Peroxisomes (microbodies) are subcellular organelles distributed in plants and animals. They function in catabolic oxidative respiration characterized in part by flavin oxidases, H 2 O 2 generation, and catalase. Thus, D-amino acid oxidase and L-α-hydroxy acid oxidase along with catalase are characteristic of peroxisomes ...
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Quantum chemical studies of redox-active enzymes
Faraday Discussions, 2003In applications on mechanisms for metalloenzymes, the hybrid density functional method B3LYP has been used in most cases. The present knowledge about the accuracy of this method on transition metal complexes is described. In comparison to ab initio methods like CASPT2 and CCSD(T), B3LYP has generally been shown to perform quite well.
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In situ and operando electrochemistry of redox enzymes
Current Opinion in Electrochemistry, 2022Graziela C Sedenho +2 more
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