1
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Eady RR, Samar Hasnain S. New horizons in structure-function studies of copper nitrite reductase. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214463] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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2
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Li D, Ma Y, Duan H, Deng W, Li D. Griess reaction-based paper strip for colorimetric/fluorescent/SERS triple sensing of nitrite. Biosens Bioelectron 2018; 99:389-398. [DOI: 10.1016/j.bios.2017.08.008] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 08/01/2017] [Accepted: 08/07/2017] [Indexed: 11/28/2022]
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3
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Chen J, Ma Q, Wang C, Hu X, Gao Y, Wang H, Qin D, Lu X. A simple fluorescence sensor for the detection of nitrite (NO2−) in real samples using water-dispersible graphite-like carbon nitride (w-g-C3N4) nanomaterials. NEW J CHEM 2017. [DOI: 10.1039/c7nj01446e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel NO2− detection method based on the reaction of w-g-C3N4 with nitrite (NO2−) in an acidic medium.
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Affiliation(s)
- Jing Chen
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Qin Ma
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Caihe Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Xiaoyan Hu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Yunjing Gao
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Huan Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Dongdong Qin
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
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4
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Xiong Y, Wang CJ, Tao T, Duan M, Fang SW, Zheng M. A miniaturized fiber-optic colorimetric sensor for nitrite determination by coupling with a microfluidic capillary waveguide. Anal Bioanal Chem 2016; 408:3413-23. [PMID: 26939671 DOI: 10.1007/s00216-016-9415-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 01/26/2016] [Accepted: 02/10/2016] [Indexed: 10/22/2022]
Abstract
A microfluidic-capillary-waveguide-coupled fiber-optic sensor was developed for colorimetric determination of hazardous nitrite based on the Griess-Ilosvay reaction. The sensor was modularly designed by use of a light-emitting diode as the light source, silica fiber as the light transmission element, and a capillary waveguide tube as the light reaction flow cell. With the light interacting with the azo dye generated by the Griess-Ilosvay reaction between nitrite and Griess reagents, nitrite could be determined by a colorimetric method according to Beer's law. By use of the inexpensive and micro-sized elements mentioned above, the sensor provided a new low-cost and portable method for in situ and online measurement of nitrite. The sensor had a wide linear range for nitrite from 0.02 to 1.8 mg L(-1) and a low detection limit of 7 μg L(-1) (3σ), with a relative standard deviation of 0.37% (n = 10). With a low reagent demand of 200 μL, a short response time of 6.24 s, and excellent selectivity, the sensor is environmentally friendly and has been applied to nitrite determination in different water samples. The results were compared with those obtained by conventional spectrophotometry and ion chromatography, indicating the sensor's potential for practical applications.
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Affiliation(s)
- Yan Xiong
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, 610500, China.,Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
| | - Cheng-Jie Wang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
| | - Tao Tao
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
| | - Ming Duan
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, 610500, China. .,Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu, Sichuan, 610500, China.
| | - Shen-Wen Fang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
| | - Min Zheng
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
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5
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Gao M, Fang W, Ren J, Shen A, Hu J. Reliable SERS detection of nitrite based on pH and laser irradiance-dependent diazotization through a convenient sampling micro-chamber. Analyst 2016; 141:5195-201. [DOI: 10.1039/c6an00880a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A SERS-enabled micro-chamber was constructed for reliable and pretreatment-free detection of NO2−based on a pH and laser irradiance-dependent diazotization.
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Affiliation(s)
- Mengyue Gao
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
| | - Wei Fang
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
| | - Jiaqiang Ren
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
| | - Aiguo Shen
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
| | - Jiming Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
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6
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Xu H, Zhu H, Sun M, Yu H, Li H, Ma F, Wang S. Graphene oxide supported gold nanoclusters for the sensitive and selective detection of nitrite ions. Analyst 2015; 140:1678-85. [DOI: 10.1039/c4an02181a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitrite selectively reacts to red fluorescent gold nanoclusters supported on blue fluorescent graphene oxide sheet and leads to a ratiometric fluorescence color change.
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Affiliation(s)
- Hongda Xu
- Department of Chemistry
- University of Science & Technology of China
- Hefei
- China
- Institute of Intelligent Machines
| | - Houjuan Zhu
- Department of Chemistry
- University of Science & Technology of China
- Hefei
- China
- Institute of Intelligent Machines
| | - Mingtai Sun
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
| | - Huan Yu
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
| | - Huihui Li
- Department of Chemistry
- University of Science & Technology of China
- Hefei
- China
- Institute of Intelligent Machines
| | - Fang Ma
- Department of Chemistry
- University of Science & Technology of China
- Hefei
- China
- Institute of Intelligent Machines
| | - Suhua Wang
- Department of Chemistry
- University of Science & Technology of China
- Hefei
- China
- Institute of Intelligent Machines
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7
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Tabares LC, Gupta A, Aartsma TJ, Canters GW. Tracking electrons in biological macromolecules: from ensemble to single molecule. Molecules 2014; 19:11660-78. [PMID: 25102116 PMCID: PMC6271485 DOI: 10.3390/molecules190811660] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 07/23/2014] [Accepted: 07/25/2014] [Indexed: 11/29/2022] Open
Abstract
Nature utilizes oxido-reductases to cater to the energy demands of most biochemical processes in respiratory species. Oxido-reductases are capable of meeting this challenge by utilizing redox active sites, often containing transition metal ions, which facilitate movement and relocation of electrons/protons to create a potential gradient that is used to energize redox reactions. There has been a consistent struggle by researchers to estimate the electron transfer rate constants in physiologically relevant processes. This review provides a brief background on the measurements of electron transfer rates in biological molecules, in particular Cu-containing enzymes, and highlights the recent advances in monitoring these electron transfer events at the single molecule level or better to say, at the individual event level.
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Affiliation(s)
- Leandro C Tabares
- Commissariat à l'Energie Atomique, Institut de Biologie et de Technologies de Saclay, Service de Bioénergétique, Biologie Structurale et Mécanismes (CNRS UMR-8221), Gif-sur-Yvette Cedex 91191, France
| | - Ankur Gupta
- Leiden Institute of Physics, Huygens-Kamerlingh Onnes Laboratory, Leiden University, Niels Bohrweg 2, PO Box 9504, RA Leiden 2300, The Netherlands
| | - Thijs J Aartsma
- Leiden Institute of Physics, Huygens-Kamerlingh Onnes Laboratory, Leiden University, Niels Bohrweg 2, PO Box 9504, RA Leiden 2300, The Netherlands
| | - Gerard W Canters
- Leiden Institute of Physics, Huygens-Kamerlingh Onnes Laboratory, Leiden University, Niels Bohrweg 2, PO Box 9504, RA Leiden 2300, The Netherlands.
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8
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Turunen P, Rowan AE, Blank K. Single-enzyme kinetics with fluorogenic substrates: lessons learnt and future directions. FEBS Lett 2014; 588:3553-63. [DOI: 10.1016/j.febslet.2014.06.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 06/04/2014] [Accepted: 06/05/2014] [Indexed: 01/05/2023]
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9
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Mathwig K, Aartsma TJ, Canters GW, Lemay SG. Nanoscale methods for single-molecule electrochemistry. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2014; 7:383-404. [PMID: 25000819 DOI: 10.1146/annurev-anchem-062012-092557] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The development of experiments capable of probing individual molecules has led to major breakthroughs in fields ranging from molecular electronics to biophysics, allowing direct tests of knowledge derived from macroscopic measurements and enabling new assays that probe population heterogeneities and internal molecular dynamics. Although still somewhat in their infancy, such methods are also being developed for probing molecular systems in solution using electrochemical transduction mechanisms. Here we outline the present status of this emerging field, concentrating in particular on optical methods, metal-molecule-metal junctions, and electrochemical nanofluidic devices.
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Affiliation(s)
- Klaus Mathwig
- MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, the Netherlands; ,
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10
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Affiliation(s)
- Luisa B. Maia
- REQUIMTE/CQFB, Departamento
de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - José J. G. Moura
- REQUIMTE/CQFB, Departamento
de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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11
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Gupta A, Aartsma TJ, Canters GW. One at a Time: Intramolecular Electron-Transfer Kinetics in Small Laccase Observed during Turnover. J Am Chem Soc 2014; 136:2707-10. [DOI: 10.1021/ja411078b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ankur Gupta
- Leiden Institute of Physics, Leiden University, Leiden, The Netherlands
| | - Thijs J. Aartsma
- Leiden Institute of Physics, Leiden University, Leiden, The Netherlands
| | - Gerard W. Canters
- Leiden Institute of Physics, Leiden University, Leiden, The Netherlands
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12
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Akkilic N, van der Grient F, Kamran M, Sanghamitra NJM. Chemically-induced redox switching of a metalloprotein reveals thermodynamic and kinetic heterogeneity, one molecule at a time. Chem Commun (Camb) 2014; 50:14523-6. [DOI: 10.1039/c4cc06334a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
FRET-based detection of individual azurin–Cy5 molecules shows an on (reduction)–off (oxidation) fluorescence switching, reveals the redox parameters.
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Affiliation(s)
- Namik Akkilic
- Biological and Soft Matter Physics
- LION
- Leiden University
- 2333 CA Leiden, The Netherlands
| | - Fenna van der Grient
- Biological and Soft Matter Physics
- LION
- Leiden University
- 2333 CA Leiden, The Netherlands
| | - Muhammad Kamran
- Biological and Soft Matter Physics
- LION
- Leiden University
- 2333 CA Leiden, The Netherlands
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13
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Mogalisetti P, Gorris HH, Rojek MJ, Walt DR. Elucidating the relationship between substrate and inhibitor binding to the active sites of tetrameric β-galactosidase. Chem Sci 2014. [DOI: 10.1039/c4sc01437e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The stochastic binding and release of two different inhibitors from a tetrameric enzyme is described at the single molecule level.
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Affiliation(s)
| | - Hans H. Gorris
- University of Regensburg, Institute of Analytical Chemistry
- Chemo- and Biosensors
- 93040 Regensburg, Germany
| | | | - David R. Walt
- Tufts University, Department of Chemistry
- Medford, USA
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14
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Rybina A, Lang C, Wirtz M, Grußmayer K, Kurz A, Maier F, Schmitt A, Trapp O, Jung G, Herten DP. Direkte Beobachtung alternativer Reaktionswege an einzelnen Molekülen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300100] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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Rybina A, Lang C, Wirtz M, Grußmayer K, Kurz A, Maier F, Schmitt A, Trapp O, Jung G, Herten DP. Distinguishing Alternative Reaction Pathways by Single-Molecule Fluorescence Spectroscopy. Angew Chem Int Ed Engl 2013; 52:6322-5. [DOI: 10.1002/anie.201300100] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Revised: 02/25/2013] [Indexed: 11/07/2022]
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16
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Pudney CR, Lane RSK, Fielding AJ, Magennis SW, Hay S, Scrutton NS. Enzymatic single-molecule kinetic isotope effects. J Am Chem Soc 2013; 135:3855-64. [PMID: 23402437 DOI: 10.1021/ja309286r] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Ensemble-based measurements of kinetic isotope effects (KIEs) have advanced physical understanding of enzyme-catalyzed reactions, but controversies remain. KIEs are used as reporters of rate-limiting H-transfer steps, quantum mechanical tunnelling, dynamics and multiple reactive states. Single molecule (SM) enzymatic KIEs could provide new information on the physical basis of enzyme catalysis. Here, single pair fluorescence energy transfer (spFRET) was used to measure SM enzymatic KIEs on the H-transfer catalyzed by the enzyme pentaerythritol tetranitrate reductase. We evaluated a range of methods for extracting the SM KIE from single molecule spFRET time traces. The SM KIE enabled separation of contributions from nonenzymatic protein and fluorophore processes and H-transfer reactions. Our work demonstrates SM KIE analysis as a new method for deconvolving reaction chemistry from intrinsic dynamics.
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Affiliation(s)
- Christopher R Pudney
- Manchester Institute of Biotechnology and Faculty of Life Sciences, University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
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17
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Liu H, Yang G, Abdel-Halim E, Zhu JJ. Highly selective and ultrasensitive detection of nitrite based on fluorescent gold nanoclusters. Talanta 2013; 104:135-9. [DOI: 10.1016/j.talanta.2012.11.020] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 10/28/2012] [Accepted: 11/08/2012] [Indexed: 12/01/2022]
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18
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Elmalk AT, Salverda JM, Tabares LC, Canters GW, Aartsma TJ. Probing redox proteins on a gold surface by single molecule fluorescence spectroscopy. J Chem Phys 2012; 136:235101. [PMID: 22779620 DOI: 10.1063/1.4728107] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The interaction between the fluorescently labeled redox protein, azurin, and a thin gold film is characterized using single-molecule fluorescence intensity and lifetime measurements. Fluorescence quenching starts at distances below 2.3 nm from the gold surface. At shorter distances the quantum yield may decrease down to fourfold for direct attachment of the protein to bare gold. Outside of the quenching range, up to fivefold enhancement of the fluorescence is observed on average with increasing roughness of the gold layer. Fluorescence-detected redox activity of individual azurin molecules, with a lifetime switching ratio of 0.4, is demonstrated for the first time close to a gold surface.
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Affiliation(s)
- Abdalmohsen T Elmalk
- Leiden Institute of Physics, Leiden University, Huygens Laboratory, Niels Bohrweg 2, 2333CA Leiden, The Netherlands
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19
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Redox cycling and kinetic analysis of single molecules of solution-phase nitrite reductase. Proc Natl Acad Sci U S A 2011; 108:17269-74. [PMID: 21969548 DOI: 10.1073/pnas.1113572108] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Single-molecule measurements are a valuable tool for revealing details of enzyme mechanisms by enabling observation of unsynchronized behavior. However, this approach often requires immobilizing the enzyme on a substrate, a process which may alter enzyme behavior. We apply a microfluidic trapping device to allow, for the first time, prolonged solution-phase measurement of single enzymes in solution. Individual redox events are observed for single molecules of a blue nitrite reductase and are used to extract the microscopic kinetic parameters of the proposed catalytic cycle. Changes in parameters as a function of substrate concentration are consistent with a random sequential substrate binding mechanism.
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