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Gonzaga de França Lopes L, Gouveia Júnior FS, Karine Medeiros Holanda A, Maria Moreira de Carvalho I, Longhinotti E, Paulo TF, Abreu DS, Bernhardt PV, Gilles-Gonzalez MA, Cirino Nogueira Diógenes I, Henrique Silva Sousa E. Bioinorganic systems responsive to the diatomic gases O2, NO, and CO: From biological sensors to therapy. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Buhrke D, Hildebrandt P. Probing Structure and Reaction Dynamics of Proteins Using Time-Resolved Resonance Raman Spectroscopy. Chem Rev 2019; 120:3577-3630. [PMID: 31814387 DOI: 10.1021/acs.chemrev.9b00429] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The mechanistic understanding of protein functions requires insight into the structural and reaction dynamics. To elucidate these processes, a variety of experimental approaches are employed. Among them, time-resolved (TR) resonance Raman (RR) is a particularly versatile tool to probe processes of proteins harboring cofactors with electronic transitions in the visible range, such as retinal or heme proteins. TR RR spectroscopy offers the advantage of simultaneously providing molecular structure and kinetic information. The various TR RR spectroscopic methods can cover a wide dynamic range down to the femtosecond time regime and have been employed in monitoring photoinduced reaction cascades, ligand binding and dissociation, electron transfer, enzymatic reactions, and protein un- and refolding. In this account, we review the achievements of TR RR spectroscopy of nearly 50 years of research in this field, which also illustrates how the role of TR RR spectroscopy in molecular life science has changed from the beginning until now. We outline the various methodological approaches and developments and point out current limitations and potential perspectives.
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Affiliation(s)
- David Buhrke
- Technische Universität Berlin, Institut für Chemie, Sekr. PC14, Straße des 17, Juni 135, D-10623 Berlin, Germany
| | - Peter Hildebrandt
- Technische Universität Berlin, Institut für Chemie, Sekr. PC14, Straße des 17, Juni 135, D-10623 Berlin, Germany
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Ning YN, Xiao BL, Niu NN, Moosavi-Movahedi AA, Hong J. Glucose Oxidase Immobilized on a Functional Polymer Modified Glassy Carbon Electrode and Its Molecule Recognition of Glucose. Polymers (Basel) 2019; 11:E115. [PMID: 30960099 PMCID: PMC6401679 DOI: 10.3390/polym11010115] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/07/2019] [Accepted: 01/07/2019] [Indexed: 11/25/2022] Open
Abstract
In the present study, a glucose oxidase (GluOx) direct electron transfer was realized on an aminated polyethylene glycol (mPEG), carboxylic acid functionalized multi-walled carbon nanotubes (fMWCNTs), and ionic liquid (IL) composite functional polymer modified glassy carbon electrode (GCE). The amino groups in PEG, carboxyl groups in multi-walled carbon nanotubes, and IL may have a better synergistic effect, thus more effectively adjust the hydrophobicity, stability, conductivity, and biocompatibility of the composite functional polymer film. The composite polymer membranes were characterized by cyclic voltammetry (CV), ultraviolet-visible (UV-Vis) spectrophotometer, fluorescence spectroscopy, electrochemical impedance spectroscopy (EIS), and transmission electron microscopy (TEM), respectively. In 50 mM, pH 7.0 phosphate buffer solution, the formal potential and heterogeneous electron transfer constant (ks) of GluOx on the composite functional polymer modified GCE were -0.27 V and 6.5 s-1, respectively. The modified electrode could recognize and detect glucose linearly in the range of 20 to 950 μM with a detection limit of 0.2 μM. The apparent Michaelis-Menten constant (Kmapp) of the modified electrode was 143 μM. The IL/mPEG-fMWCNTs functional polymer could preserve the conformational structure and catalytic activity of GluOx and lead to high sensitivity, stability, and selectivity of the biosensors for glucose recognition and detection.
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Affiliation(s)
- Yan-Na Ning
- School of Life Sciences, Henan University, JinMing Road, Kaifeng 475000, China.
| | - Bao-Lin Xiao
- School of Life Sciences, Henan University, JinMing Road, Kaifeng 475000, China.
| | - Nan-Nan Niu
- School of Life Sciences, Henan University, JinMing Road, Kaifeng 475000, China.
| | - Ali Akbar Moosavi-Movahedi
- Institute of Biochemistry and Biophysics, University of Tehran, Enquelab Avenue, Tehran 1417614418, Iran.
| | - Jun Hong
- School of Life Sciences, Henan University, JinMing Road, Kaifeng 475000, China.
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Collins L, Kilpatrick JI, Kalinin SV, Rodriguez BJ. Towards nanoscale electrical measurements in liquid by advanced KPFM techniques: a review. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2018; 81:086101. [PMID: 29990308 DOI: 10.1088/1361-6633/aab560] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fundamental mechanisms of energy storage, corrosion, sensing, and multiple biological functionalities are directly coupled to electrical processes and ionic dynamics at solid-liquid interfaces. In many cases, these processes are spatially inhomogeneous taking place at grain boundaries, step edges, point defects, ion channels, etc and possess complex time and voltage dependent dynamics. This necessitates time-resolved and real-space probing of these phenomena. In this review, we discuss the applications of force-sensitive voltage modulated scanning probe microscopy (SPM) for probing electrical phenomena at solid-liquid interfaces. We first describe the working principles behind electrostatic and Kelvin probe force microscopies (EFM & KPFM) at the gas-solid interface, review the state of the art in advanced KPFM methods and developments to (i) overcome limitations of classical KPFM, (ii) expand the information accessible from KPFM, and (iii) extend KPFM operation to liquid environments. We briefly discuss the theoretical framework of electrical double layer (EDL) forces and dynamics, the implications and breakdown of classical EDL models for highly charged interfaces or under high ion concentrations, and describe recent modifications of the classical EDL theory relevant for understanding nanoscale electrical measurements at the solid-liquid interface. We further review the latest achievements in mapping surface charge, dielectric constants, and electrodynamic and electrochemical processes in liquids. Finally, we outline the key challenges and opportunities that exist in the field of nanoscale electrical measurements in liquid as well as providing a roadmap for the future development of liquid KPFM.
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Affiliation(s)
- Liam Collins
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America. Institute for Functional Imaging of Materials, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America
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ZENG X, LIU J, KONG S, ZHANG Z. Layer-by-Layer Assembly of Hemoglobin and DNA Functionalized Carbon Nanotubes on Glassy Carbon Electrode: Direct Electrochemistry and Electrocatalysis. ELECTROCHEMISTRY 2015. [DOI: 10.5796/electrochemistry.83.979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Xiandong ZENG
- Shenzhen Nanshan Center for Disease Control and Prevention
| | - Jie LIU
- Shenzhen Nanshan Center for Disease Control and Prevention
| | - Shu KONG
- Shenzhen Nanshan Center for Disease Control and Prevention
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Gao YF, Yang T, Yang XL, Zhang YS, Xiao BL, Hong J, Sheibani N, Ghourchian H, Hong T, Moosavi-Movahedi AA. Direct electrochemistry of glucose oxidase and glucose biosensing on a hydroxyl fullerenes modified glassy carbon electrode. Biosens Bioelectron 2014; 60:30-4. [DOI: 10.1016/j.bios.2014.04.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Revised: 03/26/2014] [Accepted: 04/03/2014] [Indexed: 10/25/2022]
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7
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Hong J, Zhao YX, Xiao BL, Moosavi-Movahedi AA, Ghourchian H, Sheibani N. Direct electrochemistry of hemoglobin immobilized on a functionalized multi-walled carbon nanotubes and gold nanoparticles nanocomplex-modified glassy carbon electrode. SENSORS 2013; 13:8595-611. [PMID: 23881129 PMCID: PMC3758613 DOI: 10.3390/s130708595] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 06/17/2013] [Accepted: 06/30/2013] [Indexed: 12/02/2022]
Abstract
Direct electron transfer of hemoglobin (Hb) was realized by immobilizing Hb on a carboxyl functionalized multi-walled carbon nanotubes (FMWCNTs) and gold nanoparticles (AuNPs) nanocomplex-modified glassy carbon electrode. The ultraviolet-visible absorption spectrometry (UV-Vis), transmission electron microscopy (TEM) and Fourier transform infrared (FTIR) methods were utilized for additional characterization of the AuNPs and FMWCNTs. The cyclic voltammogram of the modified electrode has a pair of well-defined quasi-reversible redox peaks with a formal potential of −0.270 ± 0.002 V (vs. Ag/AgCl) at a scan rate of 0.05 V/s. The heterogeneous electron transfer constant (ks) was evaluated to be 4.0 ± 0.2 s−1. The average surface concentration of electro-active Hb on the surface of the modified glassy carbon electrode was calculated to be 6.8 ± 0.3 × 10−10 mol cm−2. The cathodic peak current of the modified electrode increased linearly with increasing concentration of hydrogen peroxide (from 0.05 nM to 1 nM) with a detection limit of 0.05 ± 0.01 nM. The apparent Michaelis-Menten constant (Kmapp) was calculated to be 0.85 ± 0.1 nM. Thus, the modified electrode could be applied as a third generation biosensor with high sensitivity, long-term stability and low detection limit.
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Affiliation(s)
- Jun Hong
- School of Life Sciences, Henan University, JinMing Road, Kaifeng 475000, China; E-Mails: (Y.-X.Z.); (B.-L.X.)
- Authors to whom correspondence should be addressed; E-Mails: (J.H.); (A.A.M.-M.); Tel.: +86-137-8116-1597 (J.H.); Fax: +86-378-388-6258 (J.H.); Tel.: +98-21-640-3957 (A.A.M.-M.); Fax: +98-21-640-4680 (A.A.M.-M.)
| | - Ying-Xue Zhao
- School of Life Sciences, Henan University, JinMing Road, Kaifeng 475000, China; E-Mails: (Y.-X.Z.); (B.-L.X.)
| | - Bao-Lin Xiao
- School of Life Sciences, Henan University, JinMing Road, Kaifeng 475000, China; E-Mails: (Y.-X.Z.); (B.-L.X.)
| | - Ali Akbar Moosavi-Movahedi
- Institute of Biochemistry and Biophysics, University of Tehran, Enquelab Avenue, P.O. Box 13145-1384, Tehran, Iran; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (J.H.); (A.A.M.-M.); Tel.: +86-137-8116-1597 (J.H.); Fax: +86-378-388-6258 (J.H.); Tel.: +98-21-640-3957 (A.A.M.-M.); Fax: +98-21-640-4680 (A.A.M.-M.)
| | - Hedayatollah Ghourchian
- Institute of Biochemistry and Biophysics, University of Tehran, Enquelab Avenue, P.O. Box 13145-1384, Tehran, Iran; E-Mail:
| | - Nader Sheibani
- Department of Ophthalmology and Visual Sciences, University of Wisconsin, 600 Highland Avenue, K6/456 CSC, Madison, WI 53792-4673, USA; E-Mail:
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Yang C, Xu C, Wang X. ZnO/Cu nanocomposite: a platform for direct electrochemistry of enzymes and biosensing applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4580-4585. [PMID: 22309190 DOI: 10.1021/la2044202] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Unique structured nanomaterials can facilitate the direct electron transfer between redox proteins and the electrodes. Here, in situ directed growth on an electrode of a ZnO/Cu nanocomposite was prepared by a simple corrosion approach, which enables robust mechanical adhesion and electrical contact between the nanostructured ZnO and the electrodes. This is great help to realize the direct electron transfer between the electrode surface and the redox protein. SEM images demonstrate that the morphology of the ZnO/Cu nanocomposite has a large specific surface area, which is favorable to immobilize the biomolecules and construct biosensors. Using glucose oxidase (GOx) as a model, this ZnO/Cu nanocomposite is employed for immobilization of GOx and the construction of the glucose biosensor. Direct electron transfer of GOx is achieved at ZnO/Cu nanocomposite with a high heterogeneous electron transfer rate constant of 0.67 ± 0.06 s(-1). Such ZnO/Cu nanocomposite provides a good matrix for direct electrochemistry of enzymes and mediator-free enzymatic biosensors.
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Affiliation(s)
- Chi Yang
- State Key Laboratory of Bioelectronics, School Electronic Science and Engineering, Southeast University, Nanjing, P R China
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9
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Direct electrochemistry and enhanced electrocatalytic activity of hemoglobin entrapped in graphene and ZnO nanosphere composite film. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0515-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Zhu Z, Qu L, Niu Q, Zeng Y, Sun W, Huang X. Urchinlike MnO2 nanoparticles for the direct electrochemistry of hemoglobin with carbon ionic liquid electrode. Biosens Bioelectron 2010; 26:2119-24. [PMID: 20926275 DOI: 10.1016/j.bios.2010.09.017] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 09/01/2010] [Accepted: 09/06/2010] [Indexed: 11/18/2022]
Abstract
In this paper an urchinlike MnO(2) nanoparticle was synthesized by hydrothermal method and applied to the protein electrochemistry for the first time. By using a carbon ionic liquid electrode (CILE) as the basal electrode, hemoglobin (Hb) was immobilized on the surface of CILE with chitosan (CTS) and MnO(2) nanoparticle composite materials. Spectroscopic results indicated that Hb molecules retained its native structure in the composite film. A pair of well-defined redox peaks appeared on the cyclic voltammogram with the formal peak potential as -0.180 V (vs. SCE), which indicated that direct electron transfer of Hb was realized on the modified electrode. The result can be attributed to the specific characteristic of MnO(2) nanoparticle and the advantages of CILE, which facilitated the electron transfer rate. The fabricated CTS-MnO(2)-Hb/CILE showed good electrocatalytic ability to the reduction of trichloroacetic acid (TCA). Under the optimal conditions the catalytic current was in linear to TCA concentration in the range from 0.5 to 16.0 mmol L(-1) with the detection limit calculated as 0.167 mmol L(-1) (3σ). The result indicated that urchinlike MnO(2) nanoparticle had the potential application in the third generation electrochemical biosensors.
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Affiliation(s)
- Zhihong Zhu
- Institute of Nano-Science and Technology Center, Huazhong Normal University, Wuhan 430079, PR China
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11
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Joseph R, Girish Kumar K. Differential pulse voltammetric determination and catalytic oxidation of sulfamethoxazole using [5,10,15,20- tetrakis (3-methoxy-4-hydroxy phenyl) porphyrinato] Cu (II) modified carbon paste sensor. Drug Test Anal 2010; 2:278-83. [DOI: 10.1002/dta.129] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Electrochemical behavior of biocatalytical composite based on heme-proteins, didodecyldimethylammonium bromide and room-temperature ionic liquid. Anal Chim Acta 2010; 663:19-26. [DOI: 10.1016/j.aca.2010.01.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2009] [Revised: 01/06/2010] [Accepted: 01/11/2010] [Indexed: 11/20/2022]
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13
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Selvaraju T, Ramaraj R. Electrocatalytic reduction of hydrogen peroxide at nanostructured copper modified electrode. J APPL ELECTROCHEM 2008. [DOI: 10.1007/s10800-008-9674-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Hashemnia S, Ghourchian H, Moosavi-Movahedi AA, Faridnouri H. Direct electrochemistry of chemically modified catalase immobilized on an oxidatively activated glassy carbon electrode. J APPL ELECTROCHEM 2008. [DOI: 10.1007/s10800-008-9631-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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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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16
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Xu JS, Zhao GC. Direct Electrochemistry of Cytochrome c on a Silica Sol-Gel Film Modified Electrode. ELECTROANAL 2008. [DOI: 10.1002/elan.200704164] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Farmer PJ, Lin R, Bayachou M. Electrochemistry and Catalysis by Myoglobin in Surfactant Films. COMMENT INORG CHEM 2006. [DOI: 10.1080/02603599808012254] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Wang SF, Chen T, Zhang ZL, Shen XC, Lu ZX, Pang DW, Wong KY. Direct electrochemistry and electrocatalysis of heme proteins entrapped in agarose hydrogel films in room-temperature ionic liquids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:9260-6. [PMID: 16171360 DOI: 10.1021/la050947k] [Citation(s) in RCA: 236] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The electrochemistry and electrocatalysis of a number of heme proteins entrapped in agarose hydrogel films in the room-temperature ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF(6)]) have been investigated. UV-vis and FTIR spectroscopy show that the heme proteins retain their native structure in agarose film. The uniform distribution of hemoglobin in agarose-dimethylformamide film was demonstrated by atomic force microscopy. Cyclic voltammetry shows that direct electron transfer between the heme proteins and glassy carbon electrode is quasi-reversible in [bmim][PF(6)]. The redox potentials for hemoglobin, myoglobin, horseradish peroxidase, cytochrome c, and catalase were found to be more negative than those in aqueous solution. The charge-transfer coefficient and the apparent electron-transfer rate constant for these heme proteins in [bmim][PF(6)] were calculated from the peak-to-peak separation as a function of scan rate. The heme proteins catalyze the electroreduction of trichloroacetic acid and tert-butyl hydroperoxide in [bmim][PF(6)]. The kinetic parameter I(max) (maximum current at saturation concentration of substrate) and the apparent K(m) (Michaelis-Menten constant) for the electrocatalytic reactions were evaluated.
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Affiliation(s)
- Sheng-Fu Wang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
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Shahrokhian S, Jannat-Rezvani MJ. Voltammetric Studies of Propylthiouracil at a Carbon-Paste Electrode Modified with Cobalt(II)-4-chlorosalophen: Application to Voltammetric Determination in Pharmaceutical and Clinical Preparations. Mikrochim Acta 2005. [DOI: 10.1007/s00604-005-0382-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Shumyantseva VV, Bulko TV, Archakov AI. Electrochemical reduction of cytochrome P450 as an approach to the construction of biosensors and bioreactors. J Inorg Biochem 2005; 99:1051-63. [PMID: 15833328 DOI: 10.1016/j.jinorgbio.2005.01.014] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2004] [Revised: 01/24/2005] [Accepted: 01/28/2005] [Indexed: 11/25/2022]
Abstract
In the present review an attempt was made to present an up-to-date amount of the data on electrochemical reduction of the hemoprotein cytochrome P450. The concept and potentialities of enzyme electrodes--transducers--as the main element for construction of electrochemical biosensors were discussed. Different types of electrodes for bioelectrochemistry were analysed. New nanotechnological approaches to cytochrome P450 immobilisation were reported. It was shown that nanobiotechnology in electrochemistry has potential application in manufacturing biosensors and bioreactors for clinical medicine and pharmacology.
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Affiliation(s)
- Victoria V Shumyantseva
- Laboratory of Microsomal Oxidation, Institute of Biomedical Chemistry, Russian Academy of Medical Sciences, Pogodinskaya Str., 10, Moscow 119121, Russia.
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Direct electrochemistry of cytochrome c on a multi-walled carbon nanotubes modified electrode and its electrocatalytic activity for the reduction of H2O2. Electrochem commun 2005. [DOI: 10.1016/j.elecom.2005.01.006] [Citation(s) in RCA: 187] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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22
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The interface behavior of hemoglobin at carbon nanotube and the detection for HO. Talanta 2005; 65:489-94. [DOI: 10.1016/j.talanta.2004.06.028] [Citation(s) in RCA: 156] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2004] [Revised: 06/21/2004] [Accepted: 06/30/2004] [Indexed: 11/24/2022]
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Abstract
The controlled surface assembly of biological or appropriately designed synthetic host systems on optically or electrochemically-active surfaces has advanced considerably during the past decade. Recent activities, from the authors laboratory and elsewhere, and possible future directions are discussed herein.
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Affiliation(s)
- Jason J Davis
- Central Research Laboratory, Mansfield Road, Department of Chemistry, University of Oxford, Oxford, UKOX1 3QR.
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Liu HH, Tian ZQ, Lu ZX, Zhang ZL, Zhang M, Pang DW. Direct electrochemistry and electrocatalysis of heme-proteins entrapped in agarose hydrogel films. Biosens Bioelectron 2004; 20:294-304. [PMID: 15308234 DOI: 10.1016/j.bios.2004.01.015] [Citation(s) in RCA: 152] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2003] [Revised: 01/26/2004] [Accepted: 01/26/2004] [Indexed: 11/16/2022]
Abstract
Three heme-proteins, including myoglobin (Mb), hemoglobin (Hb) and horseradish peroxidase (HRP), were immobilized on edge-plane pyrolytic graphite (EPG) electrodes by agarose hydrogel. The proteins entrapped in the agarose film undergo fast direct electron transfer reactions, corresponding to FeIII = e- --> FeII. The formal potential (E degrees'), the apparent coverage (Gamma), the electron transfer coefficient (alpha) and the apparent electron transfer rate constant (ks) were calculated by integrating cyclic voltammograms or performing nonlinear regression analysis of square wave voltammetric (SWV) experimental data. The E degrees's are linearly dependent on solution pH (redox Bohr effect), indicating that the electron transfer was proton-coupled. Ultraviolet visible (UV-Vis) and reflection-absorption infrared (RAIR) spectra suggest that the conformation of proteins in the agarose film are little different from that proteins alone, and the conformation changes reversibly in the range of pH 3.0-10.0. Atomic force microscopy (AFM) images of the agarose film indicate a stable and crystal-like structure formed possibly due to the synergistic interaction of hydrogen bonding between N,N-dimethylformamide (DMF), agarose hydrogel and heme-proteins. This suggests a strong interaction between the heme-proteins and the agarose hydrogel. DMF plays an important role in immobilizing proteins and enhancing electron transfer between proteins and electrodes. The mechanisms for catalytic reduction of hydrogen peroxide and nitric oxide (NO) by proteins entrapped in agarose hydrogel were also explored.
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Affiliation(s)
- Hui-Hong Liu
- Department of Chemistry, Wuhan University, Wuhan 430072, China
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Correia dos Santos MM, Sousa PMP, Gonçalves MLS, Romão MJ, Moura I, Moura JJG. Direct electrochemistry of the Desulfovibrio gigas aldehyde oxidoreductase. ACTA ACUST UNITED AC 2004; 271:1329-38. [PMID: 15030483 DOI: 10.1111/j.1432-1033.2004.04041.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This work reports on the direct electrochemistry of the Desulfovibrio gigas aldehyde oxidoreductase (DgAOR), a molybdenum enzyme of the xanthine oxidase family that contains three redox-active cofactors: two [2Fe-2S] centers and a molybdopterin cytosine dinucleotide cofactor. The voltammetric behavior of the enzyme was analyzed at gold and carbon (pyrolytic graphite and glassy carbon) electrodes. Two different strategies were used: one with the molecules confined to the electrode surface and a second with DgAOR in solution. In all of the cases studied, electron transfer took place, although different redox reactions were responsible for the voltammetric signal. From a thorough analysis of the voltammetric responses and the structural properties of the molecular surface of DgAOR, the redox reaction at the carbon electrodes could be assigned to the reduction of the more exposed iron cluster, [2Fe-2S] II, whereas reduction of the molybdopterin cofactor occurs at the gold electrode. Voltammetric results in the presence of aldehydes are also reported and discussed.
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Xu JJ, Wang G, Zhang Q, Zhou DM, Chen HY. Interfacing cytochrome c to Au electrodes with humic acid film. Electrochem commun 2004. [DOI: 10.1016/j.elecom.2004.01.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Amini MK, Khorasani JH, Khaloo SS, Tangestaninejad S. Cobalt(II) salophen-modified carbon-paste electrode for potentiometric and voltammetric determination of cysteine. Anal Biochem 2003; 320:32-8. [PMID: 12895467 DOI: 10.1016/s0003-2697(03)00355-5] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A chemically modified electrode constructed by incorporating N,N(')-bis(salicylidene)-1,2-phenylenediaminocobalt(II) into carbon-paste matrix was used as a sensitive electrochemical sensor for detection of cysteine. The resulting electrode exhibits catalytic properties for the electrooxidation of cysteine and lowers the overpotential for the oxidation of this compound. The faster rate of electron transfer results in a near-Nernstian behavior of the modified electrode and makes it a suitable potentiometric and voltammetric sensor for the fast and easy determination of cysteine. A linear response in concentration range from approximately 2 microM to 0.01 M was obtained with a detection limit of 1 microM for the potentiometric detection of cysteine. The modified electrode was also used for the amperometric and differential pulse voltammetric determination of cysteine and the results were compared with those of the potentiometric method.
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Affiliation(s)
- Mohammad K Amini
- Chemistry Department, University of Isfahan, Isfahan 81746-73441, Iran.
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Marken F, Paddon CA, Asogan D. Direct cytochrome c electrochemistry at boron-doped diamond electrodes. Electrochem commun 2002. [DOI: 10.1016/s1388-2481(01)00272-7] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Sadeghi SJ, Tsotsou GE, Fairhead M, Meharenna YT, Gilardi G. Rational Design of P450 Enzymes for Biotechnology. PHYSICS AND CHEMISTRY BASIS OF BIOTECHNOLOGY 2001. [DOI: 10.1007/0-306-46891-3_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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30
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Gelo-Pujic M, Kim HH, Butlin NG, Palmore GT. Electrochemical studies of a truncated laccase produced in Pichia pastoris. Appl Environ Microbiol 1999; 65:5515-21. [PMID: 10584012 PMCID: PMC91752 DOI: 10.1128/aem.65.12.5515-5521.1999] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/1999] [Accepted: 09/05/1999] [Indexed: 11/20/2022] Open
Abstract
The cDNA that encodes an isoform of laccase from Trametes versicolor (LCCI), as well as a truncated version (LCCIa), was subcloned and expressed by using the yeast Pichia pastoris as the heterologous host. The amino acid sequence of LCCIa is identical to that of LCCI except that the final 11 amino acids at the C terminus of LCCI are replaced with a single cysteine residue. This modification was introduced for the purpose of improving the kinetics of electron transfer between an electrode and the copper-containing active site of laccase. The two laccases (LCCI and LCCIa) are compared in terms of their relative activity with two substrates that have different redox potentials. Results from electrochemical studies on solutions containing LCCI and LCCIa indicate that the redox potential of the active site of LCCIa is shifted to more negative values (411 mV versus normal hydrogen electrode voltage) than that found in other fungal laccases. In addition, replacing the 11 codons at the C terminus of the laccase gene with a single cysteine codon (i.e., LCCI-->LCCIa) influences the rate of heterogeneous electron transfer between an electrode and the copper-containing active site (k(het) for LCCIa = 1.3 x 10(-4) cm s(-1)). These results demonstrate for the first time that the rate of electron transfer between an oxidoreductase and an electrode can be enhanced by changes to the primary structure of a protein via site-directed mutagenesis.
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Affiliation(s)
- M Gelo-Pujic
- Department of Chemistry, University of California, Davis, California 95616, USA
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Limson J, Nyokong T. Voltammetric Studies of Spinach Ferredoxin on a Glassy Carbon Electrode Modified with Cobalt(II) Tetrasulfophthalocyanine. ELECTROANAL 1998. [DOI: 10.1002/(sici)1521-4109(199810)10:14<988::aid-elan988>3.0.co;2-p] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lin R, Bayachou M, Greaves J, Farmer PJ. Nitrite Reduction by Myoglobin in Surfactant Films. J Am Chem Soc 1997. [DOI: 10.1021/ja972529a] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rong Lin
- Department of Chemistry, University of California, Irvine Irvine, California 92697-2025
| | - Mekki Bayachou
- Department of Chemistry, University of California, Irvine Irvine, California 92697-2025
| | - John Greaves
- Department of Chemistry, University of California, Irvine Irvine, California 92697-2025
| | - Patrick J. Farmer
- Department of Chemistry, University of California, Irvine Irvine, California 92697-2025
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