Redox reactions of heme-containing metalloproteins: dynamic effects of self-assembled monolayers on thermodynamics and kinetics of cytochrome c electron-transfer reactions

Fedurco, Milan

doi:10.1016/s0010-8545(00)00292-7

Cited by 234 publications

(270 citation statements)

References 323 publications

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“…The electrochemical response of cyt c immobilized on binary SAMs composed of COOH/OH [15,16] and COOH/CH 3 [17,18] terminated alkanethiols were improved obviously, compared to that observed for cyt c immobilized on the single-component COOH SAMs.…”

Section: Introductionmentioning

confidence: 75%

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Voltammetry of immobilized cytochrome c on novel binary self-assembled monolayers of thioctic acid and thioctic amide modified gold electrodes

Jin

et al. 2006

Journal of Electroanalytical Chemistry

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Horse heart cytochrome c (cyt c) was adsorbed on the binary self-assembled monolayers (SAMs) composed of thioctic acid (T-COOH) and thioctic amide (T-NH 2 ) at gold electrodes via electrostatic interaction. The cyt c adsorbed on the modified gold electrode exhibited well-defined reversible electrochemical behavior in 10 mM phosphate buffer solution (PBS, pH 7.0). The surface concentration (Г) of electroactive species, cyt c, on the binary SAMs was higher than that in single-component SAMs of T-COOH, and reached a maximum value of 9.2×10 -12 mol cm -2 when the ratio of T-COOH to T-NH 2 in adsorption solution was of 3:2, and the formal potential

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Section: Introductionmentioning

confidence: 75%

“…Since the publication of studies on direct electron transfer between cytochrome c (cyt c) and electrode [1,2], there have been rapid developments in the use of new electrochemical devices to study the redox process of protein [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Voltammetry of immobilized cytochrome c on novel binary self-assembled monolayers of thioctic acid and thioctic amide modified gold electrodes

Jin

et al. 2006

Journal of Electroanalytical Chemistry

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“…This could be related to either a change in the heme environment of the protein or a local electric field, as has been reported for cytochrome c immobilized on carboxylic acid terminated self-assembled monolayers [32][33][34][35]. To obtain more insight into the effect of the immobilization, we determined the midpoint potential over a broad pH range and compared it with that of Mb in solution (Fig.…”

Section: Preparation Of a Pdda-pss-heme-pdda-pss Layer On Pyrolitic Gmentioning

confidence: 90%

Evidence for heme release in layer-by-layer assemblies of myoglobin and polystyrenesulfonate on pyrolitic graphite

2007

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Layer-by-layer assemblies of myoglobin and polystyrenesulfonate (PSS) on pyrolitic graphite have been investigated with the goal of determining the origin of the voltammetric response of these films. From the similar midpoint potential, coverage and electron transfer behavior compared with those of adsorbed free heme, it was concluded that the observed voltammetric peak is due to heme adsorbed at the electrode surface. This suggests that the interactions between the pyrolitic graphite electrode, PSS and myoglobin can result in heme release from the protein followed by heme adsorption on the electrode.

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“…A similar argument is used for pure heme metallo-porphyrines where the reducing agent is NADH (nicotinamide adenine dinucleotide) or ascorbic acid. 104,105 There has been extensive interest in the porphyrin based catalysts for oxidation reactions, in a laboratory context, using NaBH 4 or H 2 as reducing agents. 106 These include: Mn-porphyrins for the oxidation of alkenes, 107 Fe-and Zn-porphyrins immobilized in nanotubes for cyclohexane and n-heptane oxidation, 108 and grafting of Ru-porphyrin over MCM-48 for the epoxidation of styrene.…”

Section: Heterolytic Oxygen Activation Mechanismsmentioning

confidence: 99%

Catalytic oxygen activation versus autoxidation for industrial applications: a physicochemical approach

Liu

Ryabenkova

Conte

2015

Phys. Chem. Chem. Phys.

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The activation and use of oxygen for the oxidation and functionalization of organic substrates is among the most important reactions in a chemist's toolbox. Nevertheless, despite the vast literature on catalytic oxidation, the phenomenon of autoxidation, an ever-present background reaction that occurs in virtually every oxidation process, is often neglected. In contrast, autoxidation can affect the selectivity to a desired product, to those dictated by pure freeradical chain pathways, thus affecting the activity of any catalyst used to carry out a reaction.This critical review compares catalytic oxidation routes by transition metals versus autoxidation, particularly focusing on the industrial context, where highly selective and "green" processes are needed. Furthermore, the application of useful tests to discriminate between different oxygen activation routes, especially in the area of hydrocarbon oxidation, with the aim of an enhanced catalyst design, is described and discussed. In fact, one of the major targets of selective oxidation is the use of molecular oxygen as ultimate oxidant, combined with the development of catalysts capable to perform the catalytic cycle in a real energy and cost effective manner on a large scale. To achieve this goal, insights from metallo-proteins that could find application in some areas of industrial catalysis are presented, as well as considering the physicochemical principles that are at the fundament of oxidation and autoxidation processes.3

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Redox reactions of heme-containing metalloproteins: dynamic effects of self-assembled monolayers on thermodynamics and kinetics of cytochrome c electron-transfer reactions

Cited by 234 publications

References 323 publications

Voltammetry of immobilized cytochrome c on novel binary self-assembled monolayers of thioctic acid and thioctic amide modified gold electrodes

Voltammetry of immobilized cytochrome c on novel binary self-assembled monolayers of thioctic acid and thioctic amide modified gold electrodes

Evidence for heme release in layer-by-layer assemblies of myoglobin and polystyrenesulfonate on pyrolitic graphite

Catalytic oxygen activation versus autoxidation for industrial applications: a physicochemical approach

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