Electrochemical and in situ UV–visible spectroscopic behavior of cytochrome c at a cardiolipin-modified electrode

Hyun, Park Soo; Park, Jang-Su; Shim, Yoon‐Bo

doi:10.1016/s0022-0728(01)00627-1

Cited by 24 publications

(31 citation statements)

References 29 publications

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“…34 The direct electrochemistry of cyt c embedded in films of anionic-type lipids was also obtained via ion-exchange. 35 Although no catalytic activity of cyt c has been described in living systems, it was found to possess some peroxidase activity in vitro, especially when bound to lipid membrane.…”

Section: ·1 Cytochrome Cmentioning

confidence: 99%

Third-Generation Biosensors Based on the Direct Electron Transfer of Proteins

Zhang

2004

ANAL. SCI.

175

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Recent progress in third-generation electrochemical biosensors based on the direct electron transfer of proteins is reviewed. The development of three generations of electrochemical biosensors is also simply addressed. Special attention is paid to protein-film voltammetry, which is a powerful way to obtain the direct electron transfer of proteins. Research activities on various kinds of biosensors are discussed according to the proteins (enzymes) used in the specific work.

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Section: ·1 Cytochrome Cmentioning

confidence: 99%

Third-Generation Biosensors Based on the Direct Electron Transfer of Proteins

Zhang

2004

ANAL. SCI.

175

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“…In this diagram, the degree of oxidation and protonation of VK1 could be obtained from the dE 0 /dpH values by using the Nernst equation. 2,6 Where E 0 is a (Epa + Epc)/2. This result, we observed two different kinds of slopes.…”

Section: Resultsmentioning

confidence: 99%

“…2,[8][9][10] For observation of anion radical in the well-buffered aqueous solution, we have studied the redox reaction of VK1 with PC (VK1/PC). Potential (mV) …”

Section: Resultsmentioning

confidence: 99%

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Electrochemical and Spectroelectrochemical Behaviors of Vitamin K₁/Lipid Modified Electrodes and the Formation of Radical Anion in Aqueous Media

Yang¹,

Yoon²,

Won³

et al. 2010

Bulletin of the Korean Chemical Society

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The electrochemical properties of the liposoluble vitamin K1 adsorbed on bare and lipid coated glassy carbon electrodes (GCEs) were studied in unbuffered and well buffered aqueous media. The reduction products of vitamin K1 were characterized by employing cyclic voltammetry and the in situ UV-visible spectroelectrochemical technique. The radical species of vitamin K1 cannot be observed at the bare GCEs in well buffered media. The formation of the anion radical of vitamin K1 was observed in unbuffered solutions above pH 5.9 or at the lipid coated GCE in a well-buffered solution. UV-visible absorption bands of neutral vitamin K1 were observed at 260 nm and 330 nm, and a band corresponding to the anion radical species was observed at 450 nm. The derivative cyclic voltabsorptometric (DCVA) curves obtained for electrochemical reduction of vitamin K1 confirmed the presence of both neutral and anion radical species. The anion radical of vitamin K1 formed at the hydrophobic conditions with phosphatidylcholine (PC) lipid coated electrode was stable enough to be observed in the spectroelectrochemical experiments.

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“…Many reports have described the electrochemistry of cytochrome c in terms of modifier electrode and modifier-protein interactions [20][21][22][23][24][25][26][27]. Many promoters, such as some small organic compounds [28−31], amino acids together with some derived molecules [26,27], small peptides [32] and conductive polymers [33], have been found to promote the direct electrochemistry of cytochrome c on the electrode surface. Recently, the matrices used for the cytochrome c immobilization are a series of inorganic porous [34][35][36] and nano-materials [37][38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Fundamental studies of the cytochrome c immobilization by the potential cycling method on nanometer-scale nickel oxide surfaces

Moghaddam

Dinarvand

Saboury

et al. 2007

Biophysical Chemistry

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Electrochemical and in situ UV–visible spectroscopic behavior of cytochrome c at a cardiolipin-modified electrode

Cited by 24 publications

References 29 publications

Third-Generation Biosensors Based on the Direct Electron Transfer of Proteins

Third-Generation Biosensors Based on the Direct Electron Transfer of Proteins

Electrochemical and Spectroelectrochemical Behaviors of Vitamin K₁/Lipid Modified Electrodes and the Formation of Radical Anion in Aqueous Media

Fundamental studies of the cytochrome c immobilization by the potential cycling method on nanometer-scale nickel oxide surfaces

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Electrochemical and in situ UV–visible spectroscopic behavior of cytochrome c at a cardiolipin-modified electrode

Cited by 24 publications

References 29 publications

Third-Generation Biosensors Based on the Direct Electron Transfer of Proteins

Third-Generation Biosensors Based on the Direct Electron Transfer of Proteins

Electrochemical and Spectroelectrochemical Behaviors of Vitamin K1/Lipid Modified Electrodes and the Formation of Radical Anion in Aqueous Media

Fundamental studies of the cytochrome c immobilization by the potential cycling method on nanometer-scale nickel oxide surfaces

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Electrochemical and Spectroelectrochemical Behaviors of Vitamin K₁/Lipid Modified Electrodes and the Formation of Radical Anion in Aqueous Media