1
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Wei J, Bloom BP, Dunlap-Shohl WA, Clever CB, Rivas JE, Waldeck DH. Examining the Effects of Homochirality for Electron Transfer in Protein Assemblies. J Phys Chem B 2023; 127:6462-6469. [PMID: 37463031 PMCID: PMC10388353 DOI: 10.1021/acs.jpcb.3c02913] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Protein voltammetry studies of cytochrome c, immobilized on chiral tripeptide monolayer films, reveal the importance of the electron spin and the film's homochirality on electron transfer kinetics. Magnetic film electrodes are used to examine how an asymmetry in the standard heterogeneous electron transfer rate constant arises from changes in the electron spin direction and the enantiomer composition of the tripeptide monolayer; rate constant asymmetries as large as 60% are observed. These findings are rationalized in terms of the chiral induced spin selectivity effect and spin-dependent changes in electronic coupling. Lastly, marked differences in the average rate constant are shown between homochiral ensembles, in which the peptide and protein possess the same enantiomeric form, compared to heterochiral ensembles, where the handedness of the peptide layer is opposite to that of the protein or itself comprises heterochiral building blocks. These data demonstrate a compelling rationale for why nature is homochiral; namely, spin alignment in homochiral systems enables more efficient energy transduction.
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Affiliation(s)
- Jimeng Wei
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Brian P Bloom
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Wiley A Dunlap-Shohl
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Caleb B Clever
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - José E Rivas
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - David H Waldeck
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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2
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Saska V, Contaldo U, Mazurenko I, de Poulpiquet A, Lojou E. High electrolyte concentration effect on enzymatic oxygen reduction. Bioelectrochemistry 2023; 153:108503. [PMID: 37429114 DOI: 10.1016/j.bioelechem.2023.108503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/06/2023] [Accepted: 07/06/2023] [Indexed: 07/12/2023]
Abstract
The nature, the composition and the concentration of electrolytes is essential for electrocatalysis involving redox enzymes. Here, we discuss the effect of various electrolyte compositions with increasing ionic strengths on the stability and activity towards O2 reduction of the bilirubin oxidase from Myrothecium verrucaria (Mv BOD). Different salts, Na2SO4, (NH4)2SO4, NaCl, NaClO4, added to a phosphate buffer (PB) were evaluated with concentrations ranging from 100 mM up to 1.7 M. On functionalized carbon nanotube-modified electrodes, it was shown that the catalytic current progressively decreased with increasing salt concentrations. The process was reversible suggesting it was not related to enzyme leakage. The enzyme was then immobilized on gold electrodes modified by self-assembling of thiols. When the enzyme was simply adsorbed, the catalytic current decreased in a reversible way, thus behaving similarly as on carbon nanotubes. Enzyme mobility at the interface induced by a modification in the interactions between the protein and the electrode upon salt addition may account for this behavior. When the enzyme was covalently attached, the catalytic current increased. Enzyme compaction is proposed to be at the origin of such catalytic current increase because of shorter distances between the first copper site electron acceptor and the electrode.
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Affiliation(s)
- V Saska
- Aix Marseille Univ, CNRS, BIP, Bioénergétique et Ingénierie des Protéines, UMR 7281, 31, chemin Joseph Aiguier, CS 70071, 13402 Marseille cedex 09, France
| | - U Contaldo
- Aix Marseille Univ, CNRS, BIP, Bioénergétique et Ingénierie des Protéines, UMR 7281, 31, chemin Joseph Aiguier, CS 70071, 13402 Marseille cedex 09, France
| | - I Mazurenko
- Aix Marseille Univ, CNRS, BIP, Bioénergétique et Ingénierie des Protéines, UMR 7281, 31, chemin Joseph Aiguier, CS 70071, 13402 Marseille cedex 09, France
| | - A de Poulpiquet
- Aix Marseille Univ, CNRS, BIP, Bioénergétique et Ingénierie des Protéines, UMR 7281, 31, chemin Joseph Aiguier, CS 70071, 13402 Marseille cedex 09, France
| | - E Lojou
- Aix Marseille Univ, CNRS, BIP, Bioénergétique et Ingénierie des Protéines, UMR 7281, 31, chemin Joseph Aiguier, CS 70071, 13402 Marseille cedex 09, France.
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3
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Clark RA, Yawitz T, Luchs L, Conrad T, Bartlebaugh O, Boyd H, Hargittai B. Tripeptide Self-Assembled Monolayers as Biocompatible Surfaces for Cytochrome c Electrochemistry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1414-1424. [PMID: 36688667 DOI: 10.1021/acs.langmuir.2c02682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Biocompatible tripeptide self-assembled monolayers (SAMs) are designed with a carboxylate group on the terminal amino acid (glutamate, aspartate, or amino adipate) to electrostatically attract the lysine groups around the heme crevice in horse heart cytochrome c (cyt c), creating an electroactive protein/tripeptide/Au interfacial structure. Exposing the peptide/Au electrode to cyt c resulted in an 11 ± 3 pmol/cm2 electroactive protein surface coverage. Topographical images of the interfacial structure are obtained down to single-protein resolution by atomic force microscopy. Uniform protein monolayer assemblies are formed on the Au electrode with no major surface roughness changes. The cyt c/peptide/Au electrode systems were examined electrochemically to probe surface charge effects on the redox thermodynamics and kinetics of cyt c. Neutralization of protein surface charge due to adsorption on anionic COOH-terminated SAMs was found to change the formal potential, as determined by cyclic voltammetry. The cyt c/peptide/Au electrodes exhibit formal potentials shifted to more positive values, have a surface carboxylic acid pKa of 6 or higher, and produce effective cyt c surface charges (Zox) of -6 to -14. The Marcus theory is utilized to determine the protein electron transfer rates, which are ∼5 times faster for cyt c/tripeptide/Au compared to cyt c/11-mercaptoundecanoic acid SAMs of similar chain lengths.
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Affiliation(s)
- Rose A Clark
- Department of Chemistry, Saint Francis University, 169 Lakeview Drive, P.O. Box 600, Loretto, Pennsylvania15940, United States
| | - Tanner Yawitz
- Department of Chemistry, Saint Francis University, 169 Lakeview Drive, P.O. Box 600, Loretto, Pennsylvania15940, United States
| | - Logan Luchs
- Department of Chemistry, Saint Francis University, 169 Lakeview Drive, P.O. Box 600, Loretto, Pennsylvania15940, United States
| | - Tiffany Conrad
- Department of Chemistry, Saint Francis University, 169 Lakeview Drive, P.O. Box 600, Loretto, Pennsylvania15940, United States
| | - Owen Bartlebaugh
- Department of Chemistry, Saint Francis University, 169 Lakeview Drive, P.O. Box 600, Loretto, Pennsylvania15940, United States
| | - Hannah Boyd
- Department of Chemistry, Saint Francis University, 169 Lakeview Drive, P.O. Box 600, Loretto, Pennsylvania15940, United States
| | - Balazs Hargittai
- Department of Chemistry, Saint Francis University, 169 Lakeview Drive, P.O. Box 600, Loretto, Pennsylvania15940, United States
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4
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Di Rocco G, Ranieri A, Borsari M, Sola M, Bortolotti CA, Battistuzzi G. Assessing the Functional and Structural Stability of the Met80Ala Mutant of Cytochrome c in Dimethylsulfoxide. Molecules 2022; 27:molecules27175630. [PMID: 36080396 PMCID: PMC9458088 DOI: 10.3390/molecules27175630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 12/02/2022] Open
Abstract
The Met80Ala variant of yeast cytochrome c is known to possess electrocatalytic properties that are absent in the wild type form and that make it a promising candidate for biocatalysis and biosensing. The versatility of an enzyme is enhanced by the stability in mixed aqueous/organic solvents that would allow poorly water-soluble substrates to be targeted. In this work, we have evaluated the effect of dimethylsulfoxide (DMSO) on the functionality of the Met80Ala cytochrome c mutant, by investigating the thermodynamics and kinetics of electron transfer in mixed water/DMSO solutions up to 50% DMSO v/v. In parallel, we have monitored spectroscopically the retention of the main structural features in the same medium, focusing on both the overall protein structure and the heme center. We found that the organic solvent exerts only minor effects on the redox and structural properties of the mutant mostly as a result of the modification of the dielectric constant of the solvent. This would warrant proper functionality of this variant also under these potentially hostile experimental conditions, that differ from the physiological milieu of cytochrome c.
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Affiliation(s)
- Giulia Di Rocco
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Antonio Ranieri
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Marco Borsari
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Marco Sola
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Carlo Augusto Bortolotti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
- Correspondence: (C.A.B.); (G.B.); Tel.: +39-0592058608 (C.A.B.); +39-059208639 (G.B.)
| | - Gianantonio Battistuzzi
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
- Correspondence: (C.A.B.); (G.B.); Tel.: +39-0592058608 (C.A.B.); +39-059208639 (G.B.)
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5
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Chattopadhyay S, Mukherjee M, Kandemir B, Bowman SEJ, Bren KL, Dey A. Contributions to cytochrome c inner- and outer-sphere reorganization energy. Chem Sci 2021; 12:11894-11913. [PMID: 34659730 PMCID: PMC8442690 DOI: 10.1039/d1sc02865k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 08/05/2021] [Indexed: 11/21/2022] Open
Abstract
Cytochromes c are small water-soluble proteins that catalyze electron transfer in metabolism and energy conversion processes. Hydrogenobacter thermophilus cytochrome c552 presents a curious case in displaying fluxionality of its heme axial methionine ligand; this behavior is altered by single point mutation of the Q64 residue to N64 or V64, which fixes the ligand in a single configuration. The reorganization energy (λ) of these cytochrome c552 variants is experimentally determined using a combination of rotating disc electrochemistry, chronoamperometry and cyclic voltammetry. The differences between the λ determined from these complementary techniques helps to deconvolute the contribution of the active site and its immediate environment to the overall λ (λTotal). The experimentally determined λ values in conjunction with DFT calculations indicate that the differences in λ among the protein variants are mainly due to the differences in contributions from the protein environment and not just inner-sphere λ. DFT calculations indicate that the position of residue 64, responsible for the orientation of the axial methionine, determines the geometric relaxation of the redox active molecular orbital (RAMO). The orientation of the RAMO with respect to the heme is key to determining electron transfer coupling (HAB) which results in higher ET rates in the wild-type protein relative to the Q64V mutant despite a 150 mV higher λTotal in the former. Efficient delocalization of the redox-active molecular orbital (RAMO) in HtWT results in an increase in HAB value which in turn accelerates the electron transfer (ET) rate in spite of the higher reorganization energy (λ) than the HtQ64V mutant.![]()
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Affiliation(s)
- Samir Chattopadhyay
- School of Chemical Sciences, Indian Association for the Cultivation of Science 2A Raja SC Mullick Road Kolkata WB 700032 India
| | - Manjistha Mukherjee
- School of Chemical Sciences, Indian Association for the Cultivation of Science 2A Raja SC Mullick Road Kolkata WB 700032 India
| | - Banu Kandemir
- Department of Chemistry, University of Rochester Rochester NY 14627-0216 USA
| | - Sarah E J Bowman
- Department of Chemistry, University of Rochester Rochester NY 14627-0216 USA
| | - Kara L Bren
- Department of Chemistry, University of Rochester Rochester NY 14627-0216 USA
| | - Abhishek Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science 2A Raja SC Mullick Road Kolkata WB 700032 India
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6
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Huang S, Lu M, Wang L. Cytochrome c-multiwalled carbon nanotube and cobalt metal organic framework/gold nanoparticle immobilized electrochemical biosensor for nitrite detection. RSC Adv 2020; 11:501-509. [PMID: 35423011 PMCID: PMC8690941 DOI: 10.1039/d0ra09551f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 12/11/2020] [Indexed: 12/20/2022] Open
Abstract
Based on cytochrome c-multiwalled carbon nanotubes (Cyt c-MWCNTs) and cobalt metal–organic frameworks/gold nanoparticles (Co-MOFs/AuNPs), an electrochemical biosensor was proposed for the detection of nitrite. Herein, Co-MOFs and AuNPs were immobilized on gold electrodes via surface layer assembly. Their advantages including large surface area and high conductivity provided an excellent platform for the immobilization of Cyt c-MWCNTs. Cyt c-MWCNTs were prepared via electrostatic adsorption and possessed good biocompatibility and superior electrocatalytic activity towards nitrite. Notably, MWCNTs and AuNPs could provide a good microenvironment for the electron transfer of Cyt c, which further significantly promoted the dispersion of MWCNTs. All of the above features led to outstanding electrochemical performance and achieved signal amplification for nitrite detection. Therefore, the biosensor displayed a linear range from 0.005 μmol L−1 to 1000 μmol L−1 with a detection limit of 0.0044 μmol L−1 for nitrite detection. In addition, the designed biosensor exhibited excellent selectivity and could be applied in real samples. Based on cytochrome c-multiwalled carbon nanotubes (Cyt c-MWCNTs) and cobalt metal organic frameworks/gold nanoparticles (Co-MOFs/AuNPs), an electrochemical biosensor was proposed for the detection of nitrite.![]()
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Affiliation(s)
- Shan Huang
- School of Biological and Environmental Engineering, Hunan Key Laboratory of Applied Environmental Photocatalysis, Hunan Collaborative Innovation Center of Environmental and Energy Photocatalysis, Changsha University Changsha 410022 China +86 731 84261506 +86 731 84261506
| | - Ming Lu
- School of Chemistry and Materials Engineering, Huizhou University Huizhou 516007 China
| | - Lei Wang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University Yichang 443002 China +86 717 6397505 +86 717 6397505
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7
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Chen Y, Jiménez-Ángeles F, Qiao B, Krzyaniak MD, Sha F, Kato S, Gong X, Buru CT, Chen Z, Zhang X, Gianneschi NC, Wasielewski MR, Olvera de la Cruz M, Farha OK. Insights into the Enhanced Catalytic Activity of Cytochrome c When Encapsulated in a Metal–Organic Framework. J Am Chem Soc 2020; 142:18576-18582. [DOI: 10.1021/jacs.0c07870] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yijing Chen
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Felipe Jiménez-Ángeles
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Baofu Qiao
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Matthew D. Krzyaniak
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Fanrui Sha
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Satoshi Kato
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Xinyi Gong
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- International Institute for Nanotechnology (IIN), Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Cassandra T. Buru
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Zhijie Chen
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Xuan Zhang
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Nathan C. Gianneschi
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology (IIN), Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Simpson Querrey Institute and Department of Medicine, Northwestern University, Chicago, Illinois 60611, United States
| | - Michael R. Wasielewski
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- International Institute for Nanotechnology (IIN), Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Monica Olvera de la Cruz
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemical & Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, United States
| | - Omar K. Farha
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- International Institute for Nanotechnology (IIN), Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Department of Chemical & Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
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8
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Frank R, Prönnecke C, Azendorf R, Jahnke HG, Beck-Sickinger AG, Robitzki AA. Advanced 96-microtiter plate based bioelectrochemical platform reveals molecular short cut of electron flow in cytochrome P450 enzyme. LAB ON A CHIP 2020; 20:1449-1460. [PMID: 32219236 DOI: 10.1039/c9lc01220f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In bioelectrocatalysis, immobilised redox enzymes are activated in a bioelectronic interface without redox equivalents such as NADPH, thus enabling heterogeneous flow chemistry. The functional contact between enzyme and electrode requires a high degree of optimisation regarding choice of electrode material, electrode pre-treatment, enzyme immobilisation and reaction conditions. So far, however, there are no systems that can easily enable an optimisation procedure at a higher throughput. Here, we present an advanced platform with a vertical divided cell architecture in conjunction with a developed 96-multipotentiostat to be able to drive redox enzymes in 96 well microtiter plate based multielectrode arrays. This platform controls 96 independent three-electrode setups with arbitrary working electrode materials. We demonstrate its applicability in a mutation study of cytochrome P450 BM3 using indium tin oxide as electrode material and the 7-ethoxycoumarin product quantification assay. We show that the bioelectrocatalytic activity of P450 BM3 can be amplified when the cofactor FAD is erased from the enzyme by a single point mutation, so that FMN becomes the first electron entry point. Bioelectrocatalysis thus offers an approach to enzyme simplification as a remedy for the inherent instability of self-sufficient cytochrome P450 enzymes. In addition, we examined native and artificial enzyme activation with respect to ionic strength and buffer composition. The optimal conditions of the activation types differ substantially from each other and exhibit a new molecular facet in enzyme characteristics. In a proof-of-principle we demonstrate that the platform is also compatible with raw cell extracts, thus opening the door for random mutagenesis screenings.
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Affiliation(s)
- Ronny Frank
- Centre for Biotechnology and Biomedicine, Molecular biological-biochemical Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany.
| | - Christoph Prönnecke
- Centre for Biotechnology and Biomedicine, Molecular biological-biochemical Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany.
| | - Ronny Azendorf
- Centre for Biotechnology and Biomedicine, Molecular biological-biochemical Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany.
| | - Heinz-Georg Jahnke
- Centre for Biotechnology and Biomedicine, Molecular biological-biochemical Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany.
| | | | - Andrea A Robitzki
- Centre for Biotechnology and Biomedicine, Molecular biological-biochemical Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany.
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9
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Ritzert NL, Lukus PA, Scott BL, Zapien DC. Characterization of the Iron Species Released by Ferritin Immobilized on Self-Assembled Monolayer Modified Gold Electrodes. ANAL LETT 2020. [DOI: 10.1080/00032719.2019.1657882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Nicole L. Ritzert
- Department of Chemistry, Slippery Rock University, Slippery Rock, PA, USA
| | - Peter A. Lukus
- Department of Chemistry, Slippery Rock University, Slippery Rock, PA, USA
| | - Brandon L. Scott
- Department of Chemistry, Slippery Rock University, Slippery Rock, PA, USA
| | - Donald C. Zapien
- Department of Chemistry, Slippery Rock University, Slippery Rock, PA, USA
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10
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In situ spectroelectrochemical investigation of a biophotoelectrode based on photoreaction centers embedded in a redox hydrogel. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135190] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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11
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Silveira CM, Zumpano R, Moreira M, Almeida MP, Oliveira MJ, Bento M, Montez C, Paixão I, Franco R, Pereira E, Almeida MG. Star‐Shaped Gold Nanoparticles as Friendly Interfaces for Protein Electrochemistry: the Case Study of Cytochrome
c. ChemElectroChem 2019. [DOI: 10.1002/celc.201901393] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Célia M. Silveira
- UCIBIO, REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Monte de Caparica Portugal
| | - Rosaceleste Zumpano
- Department of Chemistry and Drug Technologies Sapienza University of Rome Piazzale Aldo Moro 5 00185 Rome Italy
| | - Miguel Moreira
- UCIBIO, REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Monte de Caparica Portugal
| | - Miguel Peixoto Almeida
- LAQV, REQUIMTE, Dep. Química e Bioquímica Faculdade de Ciências Universidade do Porto 4169-007 Porto Portugal
| | - Maria João Oliveira
- UCIBIO, REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Monte de Caparica Portugal
- i3 N/CENIMAT, Dep. Ciência dos Materiais Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa and CEMOP/UNINOVA 2829-516 Caparica Portugal
| | - Marina Bento
- UCIBIO, REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Monte de Caparica Portugal
| | - Cláudia Montez
- UCIBIO, REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Monte de Caparica Portugal
| | - Inês Paixão
- UCIBIO, REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Monte de Caparica Portugal
| | - Ricardo Franco
- UCIBIO, REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Monte de Caparica Portugal
| | - Eulália Pereira
- LAQV, REQUIMTE, Dep. Química e Bioquímica Faculdade de Ciências Universidade do Porto 4169-007 Porto Portugal
| | - M. Gabriela Almeida
- UCIBIO, REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Monte de Caparica Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM) Instituto Superior de Ciências da Saúde Egas Moniz Campus Universitário, Quinta da Granja 2829-511 Caparica Portugal
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12
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Abstract
Enzyme mediated addressing (EMA) is a highly specific and easy-to-apply technology for direction and deposition of particles and coatings on surfaces. Key feature of this process is an enzymatic reaction in direct proximity to the surface, which induces the deposition. The technique has previously shown great success in the handling of biological particles. In this study, addressing of non-biological nanoparticles, in particular plastics and metals, is presented. The respective particles are stabilized by an amphiphilic, enzyme-degradable block copolymer, consisting of poly(ethylene glycol) and poly(caprolactone). After contact with the enzyme pseudomonas lipase, the particles are destabilized, due to the loss of the hydrophilic part of the block copolymer. The lipase is therefore immobilized on glass supports. Immobilization is performed via adsorption or covalent bonding to epoxide groups. All deposition experiments show that addressing of individual particles occurs precisely within the predefined areas of enzyme activity. Depending on the material and reaction conditions, intact nanoparticles or coatings from such can be gained. The quintessence of the study is the indifference of the EMA regarding particle materials. From this rationale, the technique offers near unlimited materials compatibility within a precise, easy-to-apply, and upscalable process.
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13
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Oviedo-Rouco S, Castro MA, Alvarez-Paggi D, Spedalieri C, Tortora V, Tomasina F, Radi R, Murgida DH. The alkaline transition of cytochrome c revisited: Effects of electrostatic interactions and tyrosine nitration on the reaction dynamics. Arch Biochem Biophys 2019; 665:96-106. [DOI: 10.1016/j.abb.2019.02.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 02/18/2019] [Accepted: 02/19/2019] [Indexed: 12/19/2022]
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14
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Kang G, Yang M, Mattei MS, Schatz GC, Van Duyne RP. In Situ Nanoscale Redox Mapping Using Tip-Enhanced Raman Spectroscopy. NANO LETTERS 2019; 19:2106-2113. [PMID: 30763517 DOI: 10.1021/acs.nanolett.9b00313] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Electrochemical atomic force microscopy tip-enhanced Raman spectroscopy (EC-AFM-TERS) was used for the first time to spatially resolve local heterogeneity in redox behavior on an electrode surface in situ and at the nanoscale. A structurally well-defined Au(111) nanoplate located on a polycrystalline ITO substrate was studied to examine nanoscale redox contrast across the two electrode materials. By monitoring the TERS intensity of adsorbed Nile Blue (NB) molecules on the electrode surface, TERS maps were acquired with different applied potentials. The EC-TERS maps showed a spatial contrast in TERS intensity between Au and ITO. TERS line scans near the edge of a 20 nm-thick Au nanoplate demonstrated a spatial resolution of 81 nm under an applied potential of -0.1 V vs Ag/AgCl. The intensities from the TERS maps at various applied potentials followed Nernstian behavior, and a formal potential ( E0') map was constructed by fitting the TERS intensity at each pixel to the Nernst equation. Clear nanoscale spatial contrast between the Au and ITO regions was observed in the E0' map. In addition, statistical analysis of the E0' map identified a statistically significant 4 mV difference in E0' on Au vs ITO. Electrochemical heterogeneity was also evident in the E0' distribution, as a bimodal distribution was observed in E0' on polycrystalline ITO, but not on gold. A direct comparison between an AFM friction image and the E0' map resolved the electrochemical behavior of individual ITO grains with a spatial resolution of ∼40 nm. The variation in E0' was attributed to different local surface charges on the ITO grains. Such site-specific electrochemical information with nanoscale spatial and few mV voltage resolutions is not available using ensemble spectroelectrochemical methods. We expect that in situ redox mapping at the nanoscale using EC-AFM-TERS will have a crucial impact on understanding the role of nanoscale surface features in applications such as electrocatalysis.
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Affiliation(s)
- Gyeongwon Kang
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States
| | - Muwen Yang
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States
| | - Michael S Mattei
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States
| | - George C Schatz
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States
| | - Richard P Van Duyne
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States
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15
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16
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Nitric Oxide Detection Using Electrochemical Third-generation Biosensors - Based on Heme Proteins and Porphyrins. ELECTROANAL 2018. [DOI: 10.1002/elan.201800421] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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17
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Alvarez-Paggi D, Hannibal L, Castro MA, Oviedo-Rouco S, Demicheli V, Tórtora V, Tomasina F, Radi R, Murgida DH. Multifunctional Cytochrome c: Learning New Tricks from an Old Dog. Chem Rev 2017; 117:13382-13460. [DOI: 10.1021/acs.chemrev.7b00257] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Damián Alvarez-Paggi
- Departamento
de Química Inorgánica, Analítica y Química
Física and INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, Buenos Aires C1428EHA, Argentina
| | - Luciana Hannibal
- Department
of Pediatrics, Universitätsklinikum Freiburg, Mathildenstrasse 1, Freiburg 79106, Germany
- Departamento
de Bioquímica and Center for Free Radical and Biomedical Research,
Facultad de Medicina, Universidad de la República, Av.
Gral. Flores 2125, Montevideo 11800, Uruguay
| | - María A. Castro
- Departamento
de Química Inorgánica, Analítica y Química
Física and INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, Buenos Aires C1428EHA, Argentina
| | - Santiago Oviedo-Rouco
- Departamento
de Química Inorgánica, Analítica y Química
Física and INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, Buenos Aires C1428EHA, Argentina
| | - Veronica Demicheli
- Departamento
de Bioquímica and Center for Free Radical and Biomedical Research,
Facultad de Medicina, Universidad de la República, Av.
Gral. Flores 2125, Montevideo 11800, Uruguay
| | - Veronica Tórtora
- Departamento
de Bioquímica and Center for Free Radical and Biomedical Research,
Facultad de Medicina, Universidad de la República, Av.
Gral. Flores 2125, Montevideo 11800, Uruguay
| | - Florencia Tomasina
- Departamento
de Bioquímica and Center for Free Radical and Biomedical Research,
Facultad de Medicina, Universidad de la República, Av.
Gral. Flores 2125, Montevideo 11800, Uruguay
| | - Rafael Radi
- Departamento
de Bioquímica and Center for Free Radical and Biomedical Research,
Facultad de Medicina, Universidad de la República, Av.
Gral. Flores 2125, Montevideo 11800, Uruguay
| | - Daniel H. Murgida
- Departamento
de Química Inorgánica, Analítica y Química
Física and INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, Buenos Aires C1428EHA, Argentina
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18
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Karimi Shervedani R, Samiei Foroushani M. Comparative Electrochemical Behavior of Proteins; Cytochrome c, Agaricus Bisporus Laccase, and Glucose Oxidase, Immobilized onto Gold-Thiol Self-Assembled Monolayer via Electrostatic, Covalent, and Covalent Coordinate Bond Methods. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.11.080] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Peng C, Liu J, Xie Y, Zhou J. Molecular simulations of cytochrome c adsorption on positively charged surfaces: the influence of anion type and concentration. Phys Chem Chem Phys 2016; 18:9979-89. [DOI: 10.1039/c6cp00170j] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The influence of anion type and concentration on the adsorption of cytochrome c onto the positively charged NH2-SAM surface.
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Affiliation(s)
- Chunwang Peng
- School of Chemistry and Chemical Engineering
- Guangdong Provincial Key Lab for Green Chemical Product Technology
- South China University of Technology
- Guangzhou
- P. R. China
| | - Jie Liu
- School of Chemistry and Chemical Engineering
- Guangdong Provincial Key Lab for Green Chemical Product Technology
- South China University of Technology
- Guangzhou
- P. R. China
| | - Yun Xie
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006
- P. R. China
| | - Jian Zhou
- School of Chemistry and Chemical Engineering
- Guangdong Provincial Key Lab for Green Chemical Product Technology
- South China University of Technology
- Guangzhou
- P. R. China
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20
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Liu J, Peng C, Yu G, Zhou J. Molecular simulation study of feruloyl esterase adsorption on charged surfaces: effects of surface charge density and ionic strength. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:10751-10763. [PMID: 26379082 DOI: 10.1021/acs.langmuir.5b01491] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The surrounding conditions, such as surface charge density and ionic strength, play an important role in enzyme adsorption. The adsorption of a nonmodular type-A feruloyl esterase from Aspergillus niger (AnFaeA) on charged surfaces was investigated by parallel tempering Monte Carlo (PTMC) and all-atom molecular dynamics (AAMD) simulations at different surface charge densities (±0.05 and ±0.16 C·m(-2)) and ionic strengths (0.007 and 0.154 M). The adsorption energy, orientation, and conformational changes were analyzed. Simulation results show that whether AnFaeA can adsorb onto a charged surface is mainly controlled by electrostatic interactions between AnFaeA and the charged surface. The electrostatic interactions between AnFaeA and charged surfaces are weakened when the ionic strength increases. The positively charged surface at low surface charge density and high ionic strength conditions can maximize the utilization of the immobilized AnFaeA. The counterion layer plays a key role in the adsorption of AnFaeA on the negatively charged COOH-SAM. The native conformation of AnFaeA is well preserved under all of these conditions. The results of this work can be used for the controlled immobilization of AnFaeA.
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Affiliation(s)
- Jie Liu
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab for Green Chemical Product Technology, South China University of Technology , Guangzhou 510640, PR China
| | - Chunwang Peng
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab for Green Chemical Product Technology, South China University of Technology , Guangzhou 510640, PR China
| | - Gaobo Yu
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab for Green Chemical Product Technology, South China University of Technology , Guangzhou 510640, PR China
| | - Jian Zhou
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab for Green Chemical Product Technology, South China University of Technology , Guangzhou 510640, PR China
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21
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Molinas MF, Benavides L, Castro MA, Murgida DH. Stability, redox parameters and electrocatalytic activity of a cytochrome domain from a new subfamily. Bioelectrochemistry 2015; 105:25-33. [DOI: 10.1016/j.bioelechem.2015.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/21/2015] [Accepted: 05/03/2015] [Indexed: 11/24/2022]
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22
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Kielb P, Sezer M, Katz S, Lopez F, Schulz C, Gorton L, Ludwig R, Wollenberger U, Zebger I, Weidinger IM. Spectroscopic Observation of Calcium-Induced Reorientation of Cellobiose Dehydrogenase Immobilized on Electrodes and its Effect on Electrocatalytic Activity. Chemphyschem 2015; 16:1960-8. [PMID: 25908116 DOI: 10.1002/cphc.201500112] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 03/12/2015] [Indexed: 12/31/2022]
Abstract
Cellobiose dehydrogenase catalyzes the oxidation of various carbohydrates and is considered as a possible anode catalyst in biofuel cells. It has been shown that the catalytic performance of this enzyme immobilized on electrodes can be increased by presence of calcium ions. To get insight into the Ca(2+) -induced changes in the immobilized enzyme we employ surface-enhanced vibrational (SERR and SEIRA) spectroscopy together with electrochemistry. Upon addition of Ca(2+) ions electrochemical measurements show a shift of the catalytic turnover signal to more negative potentials while SERR measurements reveal an offset between the potential of heme reduction and catalytic current. Comparing SERR and SEIRA data we propose that binding of Ca(2+) to the heme induces protein reorientation in a way that the electron transfer pathway of the catalytic FAD center to the electrode can bypass the heme cofactor, resulting in catalytic activity at more negative potentials.
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Affiliation(s)
- Patrycja Kielb
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin (Germany)
| | - Murat Sezer
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin (Germany)
| | - Sagie Katz
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin (Germany)
| | - Francesca Lopez
- Department of Biochemistry and Structural Biology, Lund University, PO Box 124, 221 00 Lund (Sweden)
| | - Christopher Schulz
- Department of Biochemistry and Structural Biology, Lund University, PO Box 124, 221 00 Lund (Sweden)
| | - Lo Gorton
- Department of Biochemistry and Structural Biology, Lund University, PO Box 124, 221 00 Lund (Sweden)
| | - Roland Ludwig
- Department of Food Science and Technology, BOKU - University of Natural Resources and Life Science, Muthgasse 18, 1190 Vienna (Austria)
| | - Ulla Wollenberger
- Institüt für Biochemie und Biologie, Universität Potsdam, Karl Liebknecht Strasse 24-25, 14476 Golm (Germany)
| | - Ingo Zebger
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin (Germany)
| | - Inez M Weidinger
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin (Germany).
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23
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Affiliation(s)
- Luisa B. Maia
- REQUIMTE/CQFB, Departamento
de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - José J. G. Moura
- REQUIMTE/CQFB, Departamento
de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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24
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Di Rocco G, Ranieri A, Bortolotti CA, Battistuzzi G, Bonifacio A, Sergo V, Borsari M, Sola M. Axial iron coordination and spin state change in a heme c upon electrostatic protein-SAM interaction. Phys Chem Chem Phys 2014; 15:13499-505. [PMID: 23824165 DOI: 10.1039/c3cp50222h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A bacterial di-heme cytochrome c binds electrostatically to a gold electrode surface coated with a negatively charged COOH-terminated SAM adopting a sort of 'perpendicular' orientation. Cyclic voltammetry, Resonance Raman and SERRS spectroscopies indicate that the high-potential C-terminal heme center proximal to the SAM's surface undergoes an adsorption-induced swapping of one axial His ligand with a water molecule, which is probably lost in the reduced form, and a low- to high-spin transition. This coordination change for a bis-His ligated heme center upon an electrostatically-driven molecular recognition is as yet unprecedented, as well as the resulting increase in reduction potential. We discuss it in comparison with the known methionine ligand lability in monoheme cytochromes c occurring upon interaction with charged molecular patches. One possible implication of this finding in biological ET is that mobile redox partners do not behave as rigid and invariant bodies, but in the ET complex are subjected to molecular changes and structural fluctuations that affect in a complex way the thermodynamics and the kinetics of the process.
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Affiliation(s)
- Giulia Di Rocco
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 183, I-41125 Modena, Italy
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25
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Marmisollé WA, Florit MI, Posadas D. Coupling between proton binding and redox potential in electrochemically active macromolecules. The example of Polyaniline. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2013.08.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Capdevila DA, Marmisollé WA, Williams FJ, Murgida DH. Phosphate mediated adsorption and electron transfer of cytochrome c. A time-resolved SERR spectroelectrochemical study. Phys Chem Chem Phys 2013; 15:5386-94. [PMID: 23000972 DOI: 10.1039/c2cp42044a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The study of proteins immobilized on biomimetic or biocompatible electrodes represents an active field of research as it pursues both fundamental and technological interests. In this context, adsorption and redox properties of cytochrome c (Cyt) on different electrode surfaces have been extensively reported, although in some cases with contradictory results. Here we report a SERR spectroelectrochemical study of the adsorption and electron transfer behaviour of the basic protein Cyt on electrodes coated with amino-terminated monolayers. The obtained results show that inorganic phosphate (Pi) and ATP anions are able to mediate high affinity binding of the protein with preservation of the native structure and rendering an average orientation that guarantees efficient pathways for direct electron transfer. These findings aid the design of Cyt-based bioelectronic devices and understanding the modulation by Pi and ATP of physiological functions of Cyt.
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Affiliation(s)
- Daiana A Capdevila
- Departamento de Química Inorgánica, Analítica y Química Física and INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
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27
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Alvarez-Paggi D, Castro MA, Tórtora V, Castro L, Radi R, Murgida DH. Electrostatically Driven Second-Sphere Ligand Switch between High and Low Reorganization Energy Forms of Native Cytochrome c. J Am Chem Soc 2013; 135:4389-97. [DOI: 10.1021/ja311786b] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Damián Alvarez-Paggi
- Departamento
de Química Inorgánica, Analítica y Química
Física and ‡INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina
- Departamento
de Bioquímica and ⊥Center for Free Radical and Biomedical Research, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - María A. Castro
- Departamento
de Química Inorgánica, Analítica y Química
Física and ‡INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina
- Departamento
de Bioquímica and ⊥Center for Free Radical and Biomedical Research, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Verónica Tórtora
- Departamento
de Química Inorgánica, Analítica y Química
Física and ‡INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina
- Departamento
de Bioquímica and ⊥Center for Free Radical and Biomedical Research, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Laura Castro
- Departamento
de Química Inorgánica, Analítica y Química
Física and ‡INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina
- Departamento
de Bioquímica and ⊥Center for Free Radical and Biomedical Research, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Rafael Radi
- Departamento
de Química Inorgánica, Analítica y Química
Física and ‡INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina
- Departamento
de Bioquímica and ⊥Center for Free Radical and Biomedical Research, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Daniel H. Murgida
- Departamento
de Química Inorgánica, Analítica y Química
Física and ‡INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina
- Departamento
de Bioquímica and ⊥Center for Free Radical and Biomedical Research, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
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28
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Clark RA, Trout CJ, Ritchey LE, Marciniak AN, Weinzierl M, Schirra CN, Christopher Kurtz D. Electrochemical titration of carboxylic acid terminated SAMs on evaporated gold: Understanding the ferricyanide electrochemistry at the electrode surface. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2012.11.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Ranieri A, Battistuzzi G, Borsari M, Bortolotti CA, Di Rocco G, Sola M. pH and solvent H/D isotope effects on the thermodynamics and kinetics of electron transfer for electrode-immobilized native and urea-unfolded stellacyanin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:15087-15094. [PMID: 23009339 DOI: 10.1021/la303363h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The thermodynamics of Cu(II) to Cu(I) reduction and the kinetics of the electron transfer (ET) process for Rhus vernicifera stellacyanin (STC) immobilized on a decane-1-thiol coated gold electrode have been measured through cyclic voltammetry at varying pH and temperature, in the presence of urea and in D(2)O. Immobilized STC undergoes a limited conformational change that mainly results in an enhanced exposure of one or both copper binding histidines to solvent which slightly stabilizes the cupric state and increases histidine basicity. The large immobilization-induced increase in the pK(a) for the acid transition (from 4.5 to 6.3) makes this electrode-SAM-protein construct an attractive candidate as a biomolecular ET switch operating near neutral pH in molecular electronics. Such a potential interest is increased by the robustness of this interface against chemical unfolding as it undergoes only moderate changes in the reduction thermodynamics and in the ET rate in the presence of up to 8 M urea. The sensitivity of these parameters to solvent H/D isotope effects testifies to the role of protein solvation as effector of the thermodynamics and kinetics of ET.
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Affiliation(s)
- Antonio Ranieri
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Modena, Italy
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30
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Ricci AM, Tagliazucchi M, Calvo EJ. Charge regulation in redox active monolayers embedded in proton exchanger surfaces. Phys Chem Chem Phys 2012; 14:9988-95. [DOI: 10.1039/c2cp40695k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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31
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Liu L, Wang N, Guo L. Convertible electron transfer pathways of cytochrome c at TiO2 quantum electrode. RSC Adv 2012. [DOI: 10.1039/c2ra01049f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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32
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Medda L, Salis A, Magner E. Specific ion effects on the electrochemical properties of cytochrome c. Phys Chem Chem Phys 2012; 14:2875-83. [DOI: 10.1039/c2cp23401g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Bradley JM, Silkstone G, Wilson MT, Cheesman MR, Butt JN. Probing a Complex of Cytochrome c and Cardiolipin by Magnetic Circular Dichroism Spectroscopy: Implications for the Initial Events in Apoptosis. J Am Chem Soc 2011; 133:19676-9. [DOI: 10.1021/ja209144h] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Justin M. Bradley
- Centre for Molecular and Structural Biochemistry, School of Chemistry and School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Gary Silkstone
- Department of Biological Sciences, University of Essex, Wivenhoe Park, Colchester, Essex CO4 3SQ, U.K
| | - Michael T. Wilson
- Department of Biological Sciences, University of Essex, Wivenhoe Park, Colchester, Essex CO4 3SQ, U.K
| | - Myles R. Cheesman
- Centre for Molecular and Structural Biochemistry, School of Chemistry and School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Julea N. Butt
- Centre for Molecular and Structural Biochemistry, School of Chemistry and School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
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34
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35
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Khoa Ly H, Wisitruangsakul N, Sezer M, Feng JJ, Kranich A, Weidinger IM, Zebger I, Murgida DH, Hildebrandt P. Electric-field effects on the interfacial electron transfer and protein dynamics of cytochrome c. J Electroanal Chem (Lausanne) 2011. [DOI: 10.1016/j.jelechem.2010.12.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Sezer M, Frielingsdorf S, Millo D, Heidary N, Utesch T, Mroginski MA, Friedrich B, Hildebrandt P, Zebger I, Weidinger IM. Role of the HoxZ Subunit in the Electron Transfer Pathway of the Membrane-Bound [NiFe]-Hydrogenase from Ralstonia eutropha Immobilized on Electrodes. J Phys Chem B 2011; 115:10368-74. [DOI: 10.1021/jp204665r] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Murat Sezer
- Insitut für Chemie, Technische Universität Berlin, Strasse des 17, Juni 135, 10623 Berlin, Germany
| | | | - Diego Millo
- Insitut für Chemie, Technische Universität Berlin, Strasse des 17, Juni 135, 10623 Berlin, Germany
| | - Nina Heidary
- Insitut für Chemie, Technische Universität Berlin, Strasse des 17, Juni 135, 10623 Berlin, Germany
| | - Tillman Utesch
- Insitut für Chemie, Technische Universität Berlin, Strasse des 17, Juni 135, 10623 Berlin, Germany
| | - Maria-Andrea Mroginski
- Insitut für Chemie, Technische Universität Berlin, Strasse des 17, Juni 135, 10623 Berlin, Germany
| | - Bärbel Friedrich
- Humboldt-Universität zu Berlin, Chausseestrasse 117, 10115 Berlin, Germany
| | - Peter Hildebrandt
- Insitut für Chemie, Technische Universität Berlin, Strasse des 17, Juni 135, 10623 Berlin, Germany
| | - Ingo Zebger
- Insitut für Chemie, Technische Universität Berlin, Strasse des 17, Juni 135, 10623 Berlin, Germany
| | - Inez M. Weidinger
- Insitut für Chemie, Technische Universität Berlin, Strasse des 17, Juni 135, 10623 Berlin, Germany
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Electron transfer kinetics of cytochrome c immobilized on a phenolic terminated thiol self assembled monolayer determined by scanning electrochemical microscopy. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.03.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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38
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Millo D, Harnisch F, Patil SA, Ly HK, Schröder U, Hildebrandt P. Spektroelektrochemische In-situ-Untersuchung von elektrokatalytischen mikrobiellen Biofilmen mit oberflächenverstärkter Resonanz-Raman-Spektroskopie. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006046] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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39
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Millo D, Harnisch F, Patil SA, Ly HK, Schröder U, Hildebrandt P. In situ spectroelectrochemical investigation of electrocatalytic microbial biofilms by surface-enhanced resonance Raman spectroscopy. Angew Chem Int Ed Engl 2011; 50:2625-7. [PMID: 21370352 DOI: 10.1002/anie.201006046] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Revised: 11/29/2010] [Indexed: 11/10/2022]
Affiliation(s)
- Diego Millo
- Institut für Chemie, Sekr. PC14, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany.
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Waldeck DH, Khoshtariya DE. Fundamental Studies of Long- and Short-Range Electron Exchange Mechanisms between Electrodes and Proteins. MODERN ASPECTS OF ELECTROCHEMISTRY 2011. [DOI: 10.1007/978-1-4614-0347-0_2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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41
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Doan TT, Vargo ML, Gerig JK, Gulka CP, Trawick ML, Dattelbaum JD, Leopold MC. Electrochemical analysis of azurin thermodynamic and adsorption properties at monolayer-protected cluster film assemblies – Evidence for a more homogeneous adsorption interface. J Colloid Interface Sci 2010; 352:50-8. [DOI: 10.1016/j.jcis.2010.08.043] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 08/14/2010] [Accepted: 08/17/2010] [Indexed: 10/19/2022]
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42
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Patil AV, Davis JJ. Visualizing and Tuning Thermodynamic Dispersion in Metalloprotein Monolayers. J Am Chem Soc 2010; 132:16938-44. [DOI: 10.1021/ja1065448] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amol Virendra Patil
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Jason John Davis
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
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43
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Preparation of carboxylated magnetic particles for the efficient immobilization of C-terminally lysine-tagged Bacillus stearothermophilus aminopeptidase II. J Ind Microbiol Biotechnol 2010; 37:717-25. [DOI: 10.1007/s10295-010-0715-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Accepted: 03/22/2010] [Indexed: 10/19/2022]
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44
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Chiba F, Hu TC, Twyman LJ, Wagstaff M. Dendritic Macromolecules as Inhibitors to Protein-Protein Binding. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/masy.201050106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Scott B, Zapien D. Electrochemically Induced Uptake and Release of Iron by Recombinant Horse H-Chain Ferritin Covalently Immobilized on 6-Mercaptohexanoic Acid Modified Gold Electrodes. ELECTROANAL 2010. [DOI: 10.1002/elan.200900390] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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46
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Vargo ML, Gulka CP, Gerig JK, Manieri CM, Dattelbaum JD, Marks CB, Lawrence NT, Trawick ML, Leopold MC. Distance dependence of electron transfer kinetics for azurin protein adsorbed to monolayer protected nanoparticle film assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:560-569. [PMID: 19678633 DOI: 10.1021/la9020367] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The distance dependence and kinetics of the heterogeneous electron transfer (ET) reaction for the redox protein azurin adsorbed to an electrode modified with a gold nanoparticle film are investigated using cyclic voltammetry. The nanoparticle films are comprised of nonaqueous nanoparticles, known as monolayer-protected clusters (MPCs), which are covalently networked with dithiol linkers. The MPC film assembly serves as an alternative adsorption platform to the traditional alkanethiolate self-assembled monolayer (SAM) modified electrodes that are commonly employed to study the ET kinetics of immobilized redox proteins, a strategy known as protein monolayer electrochemistry. Voltammetric analysis of the ET kinetics for azurin adsorbed to SAMs of increasing chain length results in quasi-reversible voltammetry with significant peak splitting. We observed rate constants (k degrees (ET)) of 12-20 s(-1) for the protein at SAMs of shorter alkanethiolates that decays exponentially (beta = 0.9/CH(2) or 0.8/A) at SAMs of longer alkanethiolates (9-11 methylene units) or an estimated distance of 1.23 nm and is representative of classical electronic tunneling behavior over increasing distance. Azurin adsorbed to the MPC film platforms of increasing thickness results in reversible voltammetry with very little voltammetric peaks splitting and nearly negligible decay of the ET rate over significant distances up to 20 nm. The apparent lack of distance dependence for heterogeneous ET reactions at MPC film assemblies is attributed to a two-step mechanism involving extremely fast electronic hopping through the MPC film architecture. These results suggest that MPC platforms may be used in protein monolayer electrochemistry to create adsorption platforms of higher architecture that can accommodate greater than monolayer protein coverage and increase the Faradaic signal, a finding with significant implications for amperometric biosensor design and development.
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Affiliation(s)
- Morgan L Vargo
- Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia 23173, USA
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47
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Sezer M, Spricigo R, Utesch T, Millo D, Leimkuehler S, Mroginski MA, Wollenberger U, Hildebrandt P, Weidinger IM. Redox properties and catalytic activity of surface-bound human sulfite oxidase studied by a combined surface enhanced resonance Raman spectroscopic and electrochemical approach. Phys Chem Chem Phys 2010; 12:7894-903. [DOI: 10.1039/b927226g] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Sarauli D, Tanne J, Xu C, Schulz B, Trnkova L, Lisdat F. Insights into the formation and operation of polyaniline sulfonate/cytochrome c multilayer electrodes: contributions of polyelectrolytes’ properties. Phys Chem Chem Phys 2010; 12:14271-7. [DOI: 10.1039/c0cp00793e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Crilly S, Magner E. Reversible conformational change of cytochrome c at a modified gold electrode in methanol. Phys Chem Chem Phys 2010; 12:10093-7. [DOI: 10.1039/c0cp00350f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Murata K, Kajiya K, Nukaga M, Suga Y, Watanabe T, Nakamura N, Ohno H. A Simple Fabrication Method for Three-Dimensional Gold Nanoparticle Electrodes and Their Application to the Study of the Direct Electrochemistry of Cytochromec. ELECTROANAL 2010. [DOI: 10.1002/elan.200900323] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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