1
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Zhang Y, Liang H, Qi P, Xu Z, Fei H, Guo C. Deciphering the Roles of Interfacial Amino Acids in Inter-Protein Charge Transport. NANO LETTERS 2024; 24:4178-4185. [PMID: 38552164 DOI: 10.1021/acs.nanolett.4c00164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Elucidating charge transport (CT) through proteins is critical for gaining insights into ubiquitous CT chain reactions in biological systems and developing high-performance bioelectronic devices. While intra-protein CT has been extensively studied, crucial knowledge about inter-protein CT via interfacial amino acids is still absent due to the structural complexity. Herein, by loading cytochrome c (Cyt c) on well-defined peptide self-assembled monolayers to mimic the protein-protein interface, we provide a precisely controlled platform for identifying the roles of interfacial amino acids in solid-state CT via peptide-Cyt c junctions. The terminal amino acid of peptides serves as a fine-tuning factor for both the interfacial interaction between peptides and Cyt c and the immobilized Cyt c orientation, resulting in a nearly 10-fold difference in current through peptide-Cyt c junctions with varied asymmetry. This work provides a valuable platform for studying CT across proteins and contributes to the understanding of fundamental principles governing inter-protein CT.
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Affiliation(s)
- Yongkang Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Han Liang
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Pan Qi
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Zhongchen Xu
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Houguo Fei
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Cunlan Guo
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
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2
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Jain A, Trindade GF, Hicks JM, Potts JC, Rahman R, Hague RJM, Amabilino DB, Pérez-García L, Rawson FJ. Modulating the biological function of protein by tailoring the adsorption orientation on nanoparticles. J Colloid Interface Sci 2020; 587:150-161. [PMID: 33360888 DOI: 10.1016/j.jcis.2020.12.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/27/2020] [Accepted: 12/09/2020] [Indexed: 11/25/2022]
Abstract
Protein orientation in nanoparticle-protein conjugates plays a crucial role in binding to cell receptors and ultimately, defines their targeting efficiency. Therefore, understanding fundamental aspects of the role of protein orientation upon adsorption on the surface of nanoparticles (NPs) is vital for the development of clinically important protein-based nanomedicines. In this work, new insights on the effect of the different orientation of cytochrome c (cyt c) bound to gold nanoparticles (GNPs) using various ligands on its apoptotic activity is reported. Time-of-Flight Secondary-Ion Mass Spectrometry (ToF-SIMS), electrochemical and circular dichroism (CD) analyses are used to investigate the characteristics of cyt c orientation and structure on functionalized GNPs. These studies indicate that the orientation and position of the heme ring inside the cyt c structure can be altered by changing the surface chemistry on the GNPs. A difference in the apoptosis inducing capability because of different orientation of cyt c bound to the GNPs is observed. These findings indicate that the biological activity of a protein can be modulated on the surface of NPs by varying its adsorption orientation. This study will impact on the rational design of new nanoscale biosensors, bioelectronics, and nanoparticle-protein based drugs.
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Affiliation(s)
- Akhil Jain
- Division of Regenerative Medicine and Cellular Therapies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Gustavo F Trindade
- Division of Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Jacqueline M Hicks
- Division of Regenerative Medicine and Cellular Therapies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Jordan C Potts
- Division of Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Ruman Rahman
- Children's Brain Tumour Research Centre, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK
| | - Richard J M Hague
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG8 1BB, UK
| | - David B Amabilino
- GSK Carbon Neutral Laboratories for Sustainable Chemistry, School of Chemistry, University of Nottingham, Nottingham NG7 2TU, UK
| | - Lluïsa Pérez-García
- Division of Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Frankie J Rawson
- Division of Regenerative Medicine and Cellular Therapies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
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3
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Huang J, Qin H, Chen X, Wang B, Liang H, Lu J. Synthesis of an ortho-phthalaldehyde-functionalized copolymer for rapid, chemoselective and efficient conjugation with native proteins under physiological conditions. Polym Chem 2019. [DOI: 10.1039/c9py00365g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Anortho-phthalaldehyde-containing copolymer was designed and synthesized for rapid, chemoselective and efficient conjugation with proteins under physiological conditions.
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Affiliation(s)
- Jianbing Huang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Provincial Key Laboratory for High Performance Resin-based Composites
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
| | - Herong Qin
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Provincial Key Laboratory for High Performance Resin-based Composites
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
| | - Xu Chen
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Provincial Key Laboratory for High Performance Resin-based Composites
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
| | - Biyun Wang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Provincial Key Laboratory for High Performance Resin-based Composites
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
| | - Hui Liang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Provincial Key Laboratory for High Performance Resin-based Composites
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
| | - Jiang Lu
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Provincial Key Laboratory for High Performance Resin-based Composites
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
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4
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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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5
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Tavanti F, Pedone A, Matteini P, Menziani MC. Computational Insight into the Interaction of Cytochrome C with Wet and PVP-Coated Ag Surfaces. J Phys Chem B 2017; 121:9532-9540. [PMID: 28961402 DOI: 10.1021/acs.jpcb.7b07492] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, the adsorption of cytochrome C (CytC) on wet {100}, {111}, {110}, and {120} silver surfaces has been investigated by computational simulations. The effect of polyvinylpyrrolidone (PVP) coating has also been studied. The main results obtained can be summarized as follow: (a) CytC strongly interacts with wet bare high index facets, while the adsorption over the {100} surface is disfavored due to the strong water structuring at the surface; (b) a nonselective protein adsorption mechanism is highlighted; (c) the native structure of CytC is well preserved during adsorption; (d) the heme group of CytC is never found to interact directly with the surface; (e) the interactions with the PVP-capped {100} surface is weak and specific. These results can be exploited to better control biological responses at engineered nanosurface, allowing the development of improved diagnostic tools.
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Affiliation(s)
- Francesco Tavanti
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia , Via G. Campi 103, 41125 Modena, Italy
| | - Alfonso Pedone
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia , Via G. Campi 103, 41125 Modena, Italy
| | - Paolo Matteini
- Institute of Applied Physics "Nello Carrara", National Research Council , Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Maria Cristina Menziani
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia , Via G. Campi 103, 41125 Modena, Italy
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6
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Nakamaru S, Scholz F, Ford WE, Goto Y, von Wrochem F. Photoswitchable Sn-Cyt c Solid-State Devices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605924. [PMID: 28401734 DOI: 10.1002/adma.201605924] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 02/16/2017] [Indexed: 06/07/2023]
Abstract
Electron transfer across proteins plays an important role in many biological processes, including those relevant for the conversion of solar photons to chemical energy. Previous studies demonstrated the generation of photocurrents upon light irradiation in a number of photoactive proteins, such as photosystem I or bacteriorhodopsin. Here, it is shown that Sn-cytochrome c layers act as reversible and efficient photoelectrochemical switches upon integration into large-area solid-state junctions. Photocurrents are observed both in the Soret band (λ = 405 nm) and in the Q band (λ = 535 nm), with current on/off ratios reaching values of up to 25. The underlying modulation in charge-transfer rate is attributed to a hole-transport channel created by the photoexcitation of the Sn-porphyrin.
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Affiliation(s)
- Satoshi Nakamaru
- Advanced Materials Laboratories, Sony Corporation, Atsugi Technology Center No. 2, 4-16-1 Okata, Atsugi, Kanagawa, 243-0021, Japan
| | - Frank Scholz
- Sony Europe Ltd., Materials Science Laboratory, Hedelfinger Strasse 61, 70327, Stuttgart, Germany
| | - William E Ford
- Sony Europe Ltd., Materials Science Laboratory, Hedelfinger Strasse 61, 70327, Stuttgart, Germany
| | - Yoshio Goto
- Advanced Materials Laboratories, Sony Corporation, Atsugi Technology Center No. 2, 4-16-1 Okata, Atsugi, Kanagawa, 243-0021, Japan
| | - Florian von Wrochem
- Sony Europe Ltd., Materials Science Laboratory, Hedelfinger Strasse 61, 70327, Stuttgart, Germany
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7
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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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8
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Ranieri A, Di Rocco G, Millo D, Battistuzzi G, Bortolotti CA, Lancellotti L, Borsari M, Sola M. Thermodynamics and kinetics of reduction and species conversion at a hydrophobic surface for mitochondrial cytochromes c and their cardiolipin adducts. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.07.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Experimental characterization of adsorbed protein orientation, conformation, and bioactivity. Biointerphases 2015; 10:019002. [PMID: 25708632 DOI: 10.1116/1.4906485] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Protein adsorption on material surfaces is a common phenomenon that is of critical importance in many biotechnological applications. The structure and function of adsorbed proteins are tightly interrelated and play a key role in the communication and interaction of the adsorbed proteins with the surrounding environment. Because the bioactive state of a protein on a surface is a function of the orientation, conformation, and accessibility of its bioactive site(s), the isolated determination of just one or two of these factors will typically not be sufficient to understand the structure-function relationships of the adsorbed layer. Rather a combination of methods is needed to address each of these factors in a synergistic manner to provide a complementary dataset to characterize and understand the bioactive state of adsorbed protein. Over the past several years, the authors have focused on the development of such a set of complementary methods to address this need. These methods include adsorbed-state circular dichroism spectropolarimetry to determine adsorption-induced changes in protein secondary structure, amino-acid labeling/mass spectrometry to assess adsorbed protein orientation and tertiary structure by monitoring adsorption-induced changes in residue solvent accessibility, and bioactivity assays to assess adsorption-induced changes in protein bioactivity. In this paper, the authors describe the methods that they have developed and/or adapted for each of these assays. The authors then provide an example of their application to characterize how adsorption-induced changes in protein structure influence the enzymatic activity of hen egg-white lysozyme on fused silica glass, high density polyethylene, and poly(methyl-methacrylate) as a set of model systems.
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10
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Wei Y, Thyparambil AA, Wu Y, Latour RA. Adsorption-induced changes in ribonuclease A structure and enzymatic activity on solid surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:14849-14858. [PMID: 25420087 PMCID: PMC4270395 DOI: 10.1021/la503854a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/22/2014] [Indexed: 05/30/2023]
Abstract
Ribonuclease A (RNase A) is a small globular enzyme that lyses RNA. The remarkable solution stability of its structure and enzymatic activity has led to its investigation to develop a new class of drugs for cancer chemotherapeutics. However, the successful clinical application of RNase A has been reported to be limited by insufficient stability and loss of enzymatic activity when it was coupled with a biomaterial carrier for drug delivery. The objective of this study was to characterize the structural stability and enzymatic activity of RNase A when it was adsorbed on different surface chemistries (represented by fused silica glass, high-density polyethylene, and poly(methyl-methacrylate)). Changes in protein structure were measured by circular dichroism, amino acid labeling with mass spectrometry, and in vitro assays of its enzymatic activity. Our results indicated that the process of adsorption caused RNase A to undergo a substantial degree of unfolding with significant differences in its adsorbed structure on each material surface. Adsorption caused RNase A to lose about 60% of its native-state enzymatic activity independent of the material on which it was adsorbed. These results indicate that the native-state structure of RNase A is greatly altered when it is adsorbed on a wide range of surface chemistries, especially at the catalytic site. Therefore, drug delivery systems must focus on retaining the native structure of RNase A in order to maintain a high level of enzymatic activity for applications such as antitumor chemotherapy.
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Affiliation(s)
- Yang Wei
- Department
of Bioengineering, Clemson University, 501 Rhodes Engineering Research
Center, Clemson, South Carolina 29634, United States
| | - Aby A. Thyparambil
- Department
of Bioengineering, Clemson University, 501 Rhodes Engineering Research
Center, Clemson, South Carolina 29634, United States
| | - Yonnie Wu
- Department
of Chemistry and Biochemistry, Auburn University, 172 Chemistry Building, Auburn, Alabama 36849, United States
| | - Robert A. Latour
- Department
of Bioengineering, Clemson University, 501 Rhodes Engineering Research
Center, Clemson, South Carolina 29634, United States
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11
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González Orive A, Pissinis DE, Diaz C, Miñán A, Benítez GA, Rubert A, Daza Millone A, Rumbo M, Hernández Creus A, Salvarezza RC, Schilardi PL. Self-assembly of flagellin on Au(111) surfaces. J Colloid Interface Sci 2014; 433:86-93. [DOI: 10.1016/j.jcis.2014.07.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/10/2014] [Accepted: 07/08/2014] [Indexed: 10/25/2022]
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12
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Thyparambil AA, Wei Y, Wu Y, Latour RA. Determination of orientation and adsorption-induced changes in the tertiary structure of proteins on material surfaces by chemical modification and peptide mapping. Acta Biomater 2014; 10:2404-14. [PMID: 24486912 DOI: 10.1016/j.actbio.2014.01.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 01/13/2014] [Accepted: 01/23/2014] [Indexed: 10/25/2022]
Abstract
The labeling of amino acid residues followed by peptide mapping via mass spectrometry (AAL/MS) is a promising technique to provide detailed information on the adsorption-induced changes in its solvent accessibility. However, the potential of this method for the study of adsorbed protein structure is largely undeveloped at this time. The objective of this research was therefore to extend these capabilities by developing and applying AAL/MS techniques for a range of amino acid types to identify the dominant configurations of an adsorbed protein on a material surface. In this study, the configuration of hen egg white lysozyme (HEWL) adsorbed on fused silica glass, high-density polyethylene (HDPE) and poly(methyl methacrylate) (PMMA) was mapped by combining the labeling profiles obtained from five amino acid labels, which were independently applied. In order to be able to combine the results from the different amino acid labeling processes, the intensity of the HEWL segment without the target amino acids was used as an internal control to normalize the intensity shifts to an equivalent level. The resulting quantitative differences in the normalized amino acid profiles were then used to provide insights into adsorbed orientation, protein-protein interactions and adsorption-induced tertiary unfolding of HEWL, which were found to be distinctly different between the fused silica glass, HDPE and PMMA surfaces. The developed technique has the potential for broad application and for expansion to additional targeted amino acids to provide highly detailed information on the adsorbed state of any protein on any given surface.
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13
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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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14
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Alvarez-Paggi D, Zitare U, Murgida DH. The role of protein dynamics and thermal fluctuations in regulating cytochrome c/cytochrome c oxidase electron transfer. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1837:1196-207. [PMID: 24502917 DOI: 10.1016/j.bbabio.2014.01.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/22/2014] [Accepted: 01/28/2014] [Indexed: 01/06/2023]
Abstract
In this overview we present recent combined electrochemical, spectroelectrochemical, spectroscopic and computational studies from our group on the electron transfer reactions of cytochrome c and of the primary electron acceptor of cytochrome c oxidase, the CuA site, in biomimetic complexes. Based on these results, we discuss how protein dynamics and thermal fluctuations may impact on protein ET reactions, comment on the possible physiological relevance of these results, and finally propose a regulatory mechanism that may operate in the Cyt/CcO electron transfer reaction in vivo. This article is part of a Special Issue entitled: 18th European Bioenergetic Conference.
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Affiliation(s)
- Damian Alvarez-Paggi
- INQUIMAE-CONICET, Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, pab. 2, piso 3, C1428EHA Buenos Aires, Argentina
| | - Ulises Zitare
- INQUIMAE-CONICET, Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, pab. 2, piso 3, C1428EHA Buenos Aires, Argentina
| | - Daniel H Murgida
- INQUIMAE-CONICET, Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, pab. 2, piso 3, C1428EHA Buenos Aires, Argentina.
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15
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Ranieri A, Bortolotti CA, Battistuzzi G, Borsari M, Paltrinieri L, Di Rocco G, Sola M. Effect of motional restriction on the unfolding properties of a cytochrome c featuring a His/Met–His/His ligation switch. Metallomics 2014; 6:874-84. [DOI: 10.1039/c3mt00311f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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16
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Kuzume A, Zhumaev U, Li J, Fu Y, Füeg M, Esteve-Nuñez A, Wandlowski T. An in-situ surface electrochemistry approach toward whole-cell studies: Charge transfer between Geobacter sulfurreducens and electrified metal/electrolyte interfaces through linker molecules. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.02.073] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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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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18
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Electrochemical characterization of dehaloperoxidase adsorbates on COOH/OH mixed self-assembled monolayers. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2013.05.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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19
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Baio JE, Weidner T, Ramey D, Pruzinsky L, Castner DG. Probing the orientation of electrostatically immobilized cytochrome C by time of flight secondary ion mass spectrometry and sum frequency generation spectroscopy. Biointerphases 2013; 8:18. [PMID: 24706131 PMCID: PMC4000547 DOI: 10.1186/1559-4106-8-18] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 07/10/2013] [Indexed: 11/27/2022] Open
Abstract
By taking advantage of the electron pathway through the heme group in cytochrome c (CytoC) electrochemists have built sensors based upon CytoC immobilized onto metal electrodes. Previous studies have shown that the electron transfer rate through the protein is a function of the position of this heme group with respect to the electrode surface. In this study a detailed examination of CytoC orientation when electrostatically immobilized onto both amine (NH3+) and carboxyl (COO-) functionalized gold is presented. Protein coverage, on both surfaces, was monitored by the change in the atomic % N, as determined by x-ray photoelectron spectroscopy. Spectral features within the in situ sum frequency generation vibrational spectra, acquired for the protein interacting with positively and negatively charged surfaces, indicates that these electrostatic interactions do induce the protein into a well ordered film. Time of flight secondary ion mass spectrometry data demonstrated a clear separation between the two samples based on the intensity differences of secondary ions stemming from amino acids located asymmetrically within CytoC (cysteine: C2H6NS+; glutamic acid: C4H6NO+ and C4H8NO2+; leucine: C5H12N+). For a more quantitative examination of orientation, we developed a ratio comparing the sum of the intensities of secondary-ions stemming from the amino acid residues at either end of the protein. The 50 % increase in this ratio, observed between the protein covered NH3+ and COO- substrates, indicates opposite orientations of the CytoC on the two different surfaces.
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Affiliation(s)
- Joe E Baio
- National ESCA and Surface Analysis Center for Biomedical Problems, Department of Chemical Engineering, University of Washington, Seattle, USA,
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20
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Alvarez-Paggi D, Meister W, Kuhlmann U, Weidinger I, Tenger K, Zimányi L, Rákhely G, Hildebrandt P, Murgida DH. Disentangling Electron Tunneling and Protein Dynamics of Cytochrome c through a Rationally Designed Surface Mutation. J Phys Chem B 2013; 117:6061-8. [DOI: 10.1021/jp400832m] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Damián Alvarez-Paggi
- INQUIMAE-CONICET and Departamento
de Química Inorgánica, Analítica y Química
Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria,
pab. 2, piso 3, C1428EHA-Buenos Aires, Argentina
| | - Wiebke Meister
- Institut für Chemie, Technische Universität Berlin, Strasse des 17.
Juni 135, Sekr. PC14, D-10623-Berlin, Germany
| | - Uwe Kuhlmann
- Institut für Chemie, Technische Universität Berlin, Strasse des 17.
Juni 135, Sekr. PC14, D-10623-Berlin, Germany
| | - Inez Weidinger
- Institut für Chemie, Technische Universität Berlin, Strasse des 17.
Juni 135, Sekr. PC14, D-10623-Berlin, Germany
| | - Katalin Tenger
- Biological Research Center, Institute of Biophysics, H-6726 Szeged, Temesvári
krt. 62, Hungary
| | - László Zimányi
- Biological Research Center, Institute of Biophysics, H-6726 Szeged, Temesvári
krt. 62, Hungary
| | - Gábor Rákhely
- Department
of Biotechnology, University of Szeged,
H-6726, Közép fasor
52, Hungary
| | - Peter Hildebrandt
- Institut für Chemie, Technische Universität Berlin, Strasse des 17.
Juni 135, Sekr. PC14, D-10623-Berlin, Germany
| | - Daniel H. Murgida
- INQUIMAE-CONICET and Departamento
de Química Inorgánica, Analítica y Química
Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria,
pab. 2, piso 3, C1428EHA-Buenos Aires, Argentina
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21
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Castellini E, Bortolotti CA, Di Rocco G, Bernini F, Ranieri A. Enhancing Biocatalysis: The Case of Unfolded Cytochrome cImmobilized on Kaolinite. ChemCatChem 2013. [DOI: 10.1002/cctc.201200876] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Mechanistic insights into the superoxide-cytochrome c reaction by lysine surface scanning. J Biol Inorg Chem 2013; 18:429-40. [PMID: 23455484 DOI: 10.1007/s00775-013-0987-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 02/06/2013] [Indexed: 10/27/2022]
Abstract
This study summarizes results which have been obtained by a mutational study of human cytochrome c. The protein can be used as a recognition element in analytical assays and biosensors for superoxide radicals since ferricytochrome c reacts with superoxide to form ferrocytochrome c and oxygen. Here lysine mutagenesis of the distal surface (i.e., of exposed residues around the Met80 axial ligand) of human cytochrome c was pursued to evaluate the effect of the surface charges on the reaction rate with the superoxide anion radical and on the redox properties of the heme protein. The latter feature is particularly relevant when the protein is immobilized on a negatively charged self-assembled monolayer on an electrode to be used as a biosensor. The observed effects of the mutations are rationalized through structural investigations based on solution NMR spectroscopy and computational analysis of the surface electrostatics. The results suggest the presence of a specific path that guides superoxide toward an efficient reaction site. Localized positive charges at the rim of the entry channel are effective in increasing the reaction rate, whereas diffused positive charges or charges far from this area are not effective or are even detrimental, resulting in a misguided approach of the anion to the protein surface.
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23
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A bis-histidine-ligated unfolded cytochrome c immobilized on anionic SAM shows pseudo-peroxidase activity. Electrochem commun 2012. [DOI: 10.1016/j.elecom.2011.10.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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24
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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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25
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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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26
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Nuffer JH, Siegel RW. Nanostructure-biomolecule interactions: implications for tissue regeneration and nanomedicine. Tissue Eng Part A 2010; 16:423-30. [PMID: 19827941 DOI: 10.1089/ten.tea.2009.0294] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Great strides are being made worldwide in our ability to synthesize and assemble nanoscale building blocks to create advanced materials with novel properties and functionalities. The novel properties of nanostructures are derived from their confined sizes and their very large surface-to-volume ratios. Nanostructured surfaces have also been shown to elicit more favorable and selective biomolecule and cellular responses than surfaces at coarser length scales. In the case of nanoscale ceramics and osteoblasts, for example, the benefit results from protein (vitronectin) unfolding at the nanostructured surface. These nanoscale attributes are enabling a variety of nanostructures to form the bases for a new field--nanomedicine. A fundamental issue in much of nanomedicine, and especially tissue regeneration, is to understand and to eventually control nanostructure-biomolecule interactions. To elucidate the fundamental bases for changes of protein conformation and function on nanostructured surfaces, and hence select responses including those of stem cells, a number of model experiments have been carried out. The results of these studies are presented and discussed in the context of the fundamental driving forces for protein conformation changes associated with nanostructures, their relationship to modified cell responses and tissue engineering, and our present knowledge regarding nanostructure properties.
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Affiliation(s)
- Joseph H Nuffer
- Rensselaer Nanotechnology Center, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
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27
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The impact of urea-induced unfolding on the redox process of immobilised cytochrome c. J Biol Inorg Chem 2010; 15:1233-42. [DOI: 10.1007/s00775-010-0681-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Accepted: 06/02/2010] [Indexed: 11/25/2022]
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28
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Protein immobilization at gold–thiol surfaces and potential for biosensing. Anal Bioanal Chem 2010; 398:1545-64. [DOI: 10.1007/s00216-010-3708-6] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2010] [Revised: 03/29/2010] [Accepted: 03/30/2010] [Indexed: 12/14/2022]
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29
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Ly HK, Marti MA, Martin DF, Alvarez-Paggi D, Meister W, Kranich A, Weidinger IM, Hildebrandt P, Murgida DH. Thermal Fluctuations Determine the Electron-Transfer Rates of Cytochrome c in Electrostatic and Covalent Complexes. Chemphyschem 2010; 11:1225-35. [DOI: 10.1002/cphc.200900966] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Alvarez-Paggi D, Martín DF, DeBiase PM, Hildebrandt P, Martí MA, Murgida DH. Molecular Basis of Coupled Protein and Electron Transfer Dynamics of Cytochrome c in Biomimetic Complexes. J Am Chem Soc 2010; 132:5769-78. [DOI: 10.1021/ja910707r] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Damián Alvarez-Paggi
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina, and Technische Universität Berlin, Institut für Chemie, Strasse des 17. Juni 135, Sekr. PC14, D-10623-Berlin, Germany
| | - Diego F. Martín
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina, and Technische Universität Berlin, Institut für Chemie, Strasse des 17. Juni 135, Sekr. PC14, D-10623-Berlin, Germany
| | - Pablo M. DeBiase
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina, and Technische Universität Berlin, Institut für Chemie, Strasse des 17. Juni 135, Sekr. PC14, D-10623-Berlin, Germany
| | - Peter Hildebrandt
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina, and Technische Universität Berlin, Institut für Chemie, Strasse des 17. Juni 135, Sekr. PC14, D-10623-Berlin, Germany
| | - Marcelo A. Martí
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina, and Technische Universität Berlin, Institut für Chemie, Strasse des 17. Juni 135, Sekr. PC14, D-10623-Berlin, Germany
| | - Daniel H. Murgida
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA-Buenos Aires, Argentina, and Technische Universität Berlin, Institut für Chemie, Strasse des 17. Juni 135, Sekr. PC14, D-10623-Berlin, Germany
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31
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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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32
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Wan P, Wang Y, Jiang Y, Xu H, Zhang X. Fabrication of reactivated biointerface for dual-controlled reversible immobilization of cytochrome C. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2009; 21:4362-4365. [PMID: 26042945 DOI: 10.1002/adma.200901237] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2009] [Revised: 05/11/2009] [Indexed: 06/04/2023]
Abstract
A light or pH dual-responsive reactivated biointerface is fabricated using of photocontrolled reversible inclusion and exclusion reactions between photoresponsive azobenzene-containing self-assembled monolayer and pH-responsive poly(acrylic acid) polymer grafted with cyclodextrins. The dual-controlled reactivated biointerface can be employed for reversible immobilization of redox protein-Cytochrome c, triggered by dual external stimuli-light and pH.
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Affiliation(s)
- Pengbo Wan
- Key Lab of Organic Optoelectronics & Molecular Engineering Department of Chemistry, Tsinghua University Beijing 100084 (P. R. China)
| | - Yapei Wang
- Key Lab of Organic Optoelectronics & Molecular Engineering Department of Chemistry, Tsinghua University Beijing 100084 (P. R. China)
| | - Yugui Jiang
- Key Lab of Organic Optoelectronics & Molecular Engineering Department of Chemistry, Tsinghua University Beijing 100084 (P. R. China)
| | - Huaping Xu
- Key Lab of Organic Optoelectronics & Molecular Engineering Department of Chemistry, Tsinghua University Beijing 100084 (P. R. China)
| | - Xi Zhang
- Key Lab of Organic Optoelectronics & Molecular Engineering Department of Chemistry, Tsinghua University Beijing 100084 (P. R. China).
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33
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Mazzei F, Favero G, Frasconi M, Tata A, Pepi F. Electron-Transfer Kinetics of Microperoxidase-11 Covalently Immobilised onto the Surface of Multi-Walled Carbon Nanotubes by Reactive Landing of Mass-Selected Ions. Chemistry 2009; 15:7359-67. [DOI: 10.1002/chem.200900887] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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34
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Ranieri A, Battistuzzi G, Borsari M, Casalini S, Fontanesi C, Monari S, Siwek MJ, Sola M. Thermodynamics and kinetics of the electron transfer process of spinach plastocyanin adsorbed on a modified gold electrode. J Electroanal Chem (Lausanne) 2009. [DOI: 10.1016/j.jelechem.2008.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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35
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Crilly S, Magner E. Reversible increase in the redox potential of cytochrome c in methanol. Chem Commun (Camb) 2009:535-7. [DOI: 10.1039/b819618d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Feng JJ, Murgida DH, Kuhlmann U, Utesch T, Mroginski MA, Hildebrandt P, Weidinger IM. Gated Electron Transfer of Yeast Iso-1 Cytochrome c on Self-Assembled Monolayer-Coated Electrodes. J Phys Chem B 2008; 112:15202-11. [DOI: 10.1021/jp8062383] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiu-Ju Feng
- Institut für Chemie, Technische Universität Berlin, Sekr. PC14, Strasse des 17. Juni 135, D-10623 Berlin, Germany
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA Buenos Aires, Argentina
| | - Daniel H. Murgida
- Institut für Chemie, Technische Universität Berlin, Sekr. PC14, Strasse des 17. Juni 135, D-10623 Berlin, Germany
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA Buenos Aires, Argentina
| | - Uwe Kuhlmann
- Institut für Chemie, Technische Universität Berlin, Sekr. PC14, Strasse des 17. Juni 135, D-10623 Berlin, Germany
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA Buenos Aires, Argentina
| | - Tillmann Utesch
- Institut für Chemie, Technische Universität Berlin, Sekr. PC14, Strasse des 17. Juni 135, D-10623 Berlin, Germany
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA Buenos Aires, Argentina
| | - Maria Andrea Mroginski
- Institut für Chemie, Technische Universität Berlin, Sekr. PC14, Strasse des 17. Juni 135, D-10623 Berlin, Germany
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA Buenos Aires, Argentina
| | - Peter Hildebrandt
- Institut für Chemie, Technische Universität Berlin, Sekr. PC14, Strasse des 17. Juni 135, D-10623 Berlin, Germany
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA Buenos Aires, Argentina
| | - Inez M. Weidinger
- Institut für Chemie, Technische Universität Berlin, Sekr. PC14, Strasse des 17. Juni 135, D-10623 Berlin, Germany
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, C1428EHA Buenos Aires, Argentina
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37
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Chen Y, Jin B, Guo LR, Yang XJ, Chen W, Gu G, Zheng LM, Xia XH. Hemoglobin on Phosphonic Acid Terminated Self-Assembled Monolayers at a Gold Electrode: Immobilization, Direct Electrochemistry, and Electrocatalysis. Chemistry 2008; 14:10727-34. [DOI: 10.1002/chem.200801503] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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38
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Davis KL, Waldeck DH. Effect of Deuterium Substitution on Electron Transfer at Cytochrome c/SAM Interfaces. J Phys Chem B 2008; 112:12498-507. [DOI: 10.1021/jp803006b] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kathryn L. Davis
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - David H. Waldeck
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
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39
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Zhang J, Kuznetsov AM, Medvedev IG, Chi Q, Albrecht T, Jensen PS, Ulstrup J. Single-Molecule Electron Transfer in Electrochemical Environments. Chem Rev 2008; 108:2737-91. [PMID: 18620372 DOI: 10.1021/cr068073+] [Citation(s) in RCA: 252] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Tokita Y, Shimura J, Nakajima H, Goto Y, Watanabe Y. Mechanism of Intramolecular Electron Transfer in the Photoexcited Zn-Substituted Cytochromec: Theoretical and Experimental Perspective. J Am Chem Soc 2008; 130:5302-10. [DOI: 10.1021/ja711324t] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Thermodynamic and kinetic aspects of the electron transfer reaction of bovine cytochrome c immobilized on 4-mercaptopyridine and 11-mercapto-1-undecanoic acid films. J APPL ELECTROCHEM 2008. [DOI: 10.1007/s10800-008-9493-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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42
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Bonifacio A, Millo D, Keizers PHJ, Boegschoten R, Commandeur JNM, Vermeulen NPE, Gooijer C, van der Zwan G. Active-site structure, binding and redox activity of the heme-thiolate enzyme CYP2D6 immobilized on coated Ag electrodes: a surface-enhanced resonance Raman scattering study. J Biol Inorg Chem 2008; 13:85-96. [PMID: 17899220 PMCID: PMC2099460 DOI: 10.1007/s00775-007-0303-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2007] [Accepted: 09/08/2007] [Indexed: 11/28/2022]
Abstract
Surface-enhance resonance Raman scattering spectra of the heme-thiolate enzyme cytochrome P450 2D6 (CYP2D6) adsorbed on Ag electrodes coated with 11-mercaptoundecanoic acid (MUA) were obtained in various experimental conditions. An analysis of these spectra, and a comparison between them and the RR spectra of CYP2D6 in solution, indicated that the enzyme's active site retained its nature of six-coordinated low-spin heme upon immobilization. Moreover, the spectral changes detected in the presence of dextromethorphan (a CYP2D6 substrate) and imidazole (an exogenous heme axial ligand) indicated that the immobilized enzyme also preserved its ability to reversibly bind a substrate and form a heme-imidazole complex. The reversibility of these processes could be easily verified by flowing alternately solutions of the various compounds and the buffer through a home-built spectroelectrochemical flow cell which contained a sample of immobilized protein, without the need to disassemble the cell between consecutive spectral data acquisitions. Despite immobilized CYP2D6 being effectively reduced by a sodium dithionite solution, electrochemical reduction via the Ag electrode was not able to completely reduce the enzyme, and led to its extensive inactivation. This behavior indicated that although the enzyme's ability to exchange electrons is not altered by immobilization per se, MUA-coated electrodes are not suited to perform direct electrochemistry of CYP2D6.
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Affiliation(s)
- Alois Bonifacio
- Analytical Chemistry and Applied Spectroscopy, Vrije Universiteit Amsterdam, De Boelelaan 1083a, 1081 HV Amsterdam, The Netherlands
| | - Diego Millo
- Analytical Chemistry and Applied Spectroscopy, Vrije Universiteit Amsterdam, De Boelelaan 1083a, 1081 HV Amsterdam, The Netherlands
| | - Peter H. J. Keizers
- Molecular Toxicology, Vrije Universiteit Amsterdam, De Boelelaan 1083a, 1081 HV Amsterdam, The Netherlands
| | - Roald Boegschoten
- Mechanical Workshop, Vrije Universiteit Amsterdam, De Boelelaan 1083a, 1081 HV Amsterdam, The Netherlands
| | - Jan N. M. Commandeur
- Molecular Toxicology, Vrije Universiteit Amsterdam, De Boelelaan 1083a, 1081 HV Amsterdam, The Netherlands
| | - Nico P. E. Vermeulen
- Molecular Toxicology, Vrije Universiteit Amsterdam, De Boelelaan 1083a, 1081 HV Amsterdam, The Netherlands
| | - Cees Gooijer
- Analytical Chemistry and Applied Spectroscopy, Vrije Universiteit Amsterdam, De Boelelaan 1083a, 1081 HV Amsterdam, The Netherlands
| | - Gert van der Zwan
- Analytical Chemistry and Applied Spectroscopy, Vrije Universiteit Amsterdam, De Boelelaan 1083a, 1081 HV Amsterdam, The Netherlands
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43
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Kitagawa Y, Hobara D, Yamamoto M, Kakiuchi T. Counterion binding induces attractive interactions between negatively-charged self-assembled monolayer of 3-mercaptopropionic acid on Au(111) in reductive desorption. J Solid State Electrochem 2007. [DOI: 10.1007/s10008-007-0471-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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