1
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Biondi B, Bisello A, Cardena R, Schiesari R, Facci M, Cerveson L, Rancan M, Formaggio F, Santi S. Conformational Analysis and Through‐Chain Charge Propagation in Ferrocenyl‐Conjugated Homopeptides of 2,3‐Diaminopropionic acid (Dap). Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Barbara Biondi
- Institute of Biomolecular Chemistry, Padova Unit CNR Via Marzolo 1 35131 Padova Italy
| | - Annalisa Bisello
- Department of Chemical Sciences University of Padova Via Marzolo 1 35131 Padova Italy
| | - Roberta Cardena
- Department of Chemical Sciences University of Padova Via Marzolo 1 35131 Padova Italy
| | - Renato Schiesari
- Department of Chemical Sciences University of Padova Via Marzolo 1 35131 Padova Italy
| | - Martino Facci
- Department of Chemical Sciences University of Padova Via Marzolo 1 35131 Padova Italy
| | - Laura Cerveson
- Department of Chemical Sciences University of Padova Via Marzolo 1 35131 Padova Italy
| | - Marzio Rancan
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE) CNR Via Marzolo 1 35131 Padova Italy
| | - Fernando Formaggio
- Institute of Biomolecular Chemistry, Padova Unit CNR Via Marzolo 1 35131 Padova Italy
- Department of Chemical Sciences University of Padova Via Marzolo 1 35131 Padova Italy
| | - Saverio Santi
- Department of Chemical Sciences University of Padova Via Marzolo 1 35131 Padova Italy
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2
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Chen X, Yeoh YQ, He Y, Zhou C, Horsley JR, Abell AD, Yu J, Guo X. Unravelling Structural Dynamics within a Photoswitchable Single Peptide: A Step Towards Multimodal Bioinspired Nanodevices. Angew Chem Int Ed Engl 2020; 59:22554-22562. [PMID: 32851761 DOI: 10.1002/anie.202004701] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 07/15/2020] [Indexed: 12/13/2022]
Abstract
The majority of the protein structures have been elucidated under equilibrium conditions. The aim herein is to provide a better understanding of the dynamic behavior inherent to proteins by fabricating a label-free nanodevice comprising a single-peptide junction to measure real-time conductance, from which their structural dynamic behavior can be inferred. This device contains an azobenzene photoswitch for interconversion between a well-defined cis, and disordered trans isomer. Real-time conductance measurements revealed three distinct states for each isomer, with molecular dynamics simulations showing each state corresponds to a specific range of hydrogen bond lengths within the cis isomer, and specific dihedral angles in the trans isomer. These insights into the structural dynamic behavior of peptides may rationally extend to proteins. Also demonstrated is the capacity to modulate conductance which advances the design and development of bioinspired electronic nanodevices.
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Affiliation(s)
- Xinjiani Chen
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, P. R. China
| | - Yuan Qi Yeoh
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Institute of Photonics and Advanced Sensing (IPAS), School of Physical Sciences, The University of Adelaide, North Terrace, Adelaide, SA, 5005, Australia
| | - Yanbin He
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Institute of Photonics and Advanced Sensing (IPAS), School of Physical Sciences, The University of Adelaide, North Terrace, Adelaide, SA, 5005, Australia.,Pharmaceutical Department, Changzhi Medical College, Changzhi, 046000, P. R. China
| | - Chenguang Zhou
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - John R Horsley
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Institute of Photonics and Advanced Sensing (IPAS), School of Physical Sciences, The University of Adelaide, North Terrace, Adelaide, SA, 5005, Australia
| | - Andrew D Abell
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Institute of Photonics and Advanced Sensing (IPAS), School of Physical Sciences, The University of Adelaide, North Terrace, Adelaide, SA, 5005, Australia
| | - Jingxian Yu
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Institute of Photonics and Advanced Sensing (IPAS), School of Physical Sciences, The University of Adelaide, North Terrace, Adelaide, SA, 5005, Australia
| | - Xuefeng Guo
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, P. R. China.,Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
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3
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Chen X, Yeoh YQ, He Y, Zhou C, Horsley JR, Abell AD, Yu J, Guo X. Unravelling Structural Dynamics within a Photoswitchable Single Peptide: A Step Towards Multimodal Bioinspired Nanodevices. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004701] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Xinjiani Chen
- Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 P. R. China
| | - Yuan Qi Yeoh
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) Institute of Photonics and Advanced Sensing (IPAS) School of Physical Sciences The University of Adelaide North Terrace Adelaide SA 5005 Australia
| | - Yanbin He
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) Institute of Photonics and Advanced Sensing (IPAS) School of Physical Sciences The University of Adelaide North Terrace Adelaide SA 5005 Australia
- Pharmaceutical Department Changzhi Medical College Changzhi 046000 P. R. China
| | - Chenguang Zhou
- Beijing National Laboratory for Molecular Sciences State Key Laboratory for Structural Chemistry of Unstable and Stable Species College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
| | - John R. Horsley
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) Institute of Photonics and Advanced Sensing (IPAS) School of Physical Sciences The University of Adelaide North Terrace Adelaide SA 5005 Australia
| | - Andrew D. Abell
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) Institute of Photonics and Advanced Sensing (IPAS) School of Physical Sciences The University of Adelaide North Terrace Adelaide SA 5005 Australia
| | - Jingxian Yu
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) Institute of Photonics and Advanced Sensing (IPAS) School of Physical Sciences The University of Adelaide North Terrace Adelaide SA 5005 Australia
| | - Xuefeng Guo
- Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 P. R. China
- Beijing National Laboratory for Molecular Sciences State Key Laboratory for Structural Chemistry of Unstable and Stable Species College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
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4
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Zheng H, Jiang F, He R, Yang Y, Shi J, Hong W. Charge Transport through Peptides in Single‐Molecule Electrical Measurements. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900245] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Haining Zheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University Xiamen Fujian 361005 China
| | - Feng Jiang
- Joint Research Center for Peptide Drug R&D with Space Peptides, College of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
| | - Runze He
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University Xiamen Fujian 361005 China
- Joint Research Center for Peptide Drug R&D with Space Peptides, College of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
| | - Yang Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University Xiamen Fujian 361005 China
| | - Jia Shi
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University Xiamen Fujian 361005 China
| | - Wenjing Hong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University Xiamen Fujian 361005 China
- Joint Research Center for Peptide Drug R&D with Space Peptides, College of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
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5
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Gatto E, Kubitzky S, Schriever M, Cesaroni S, Mazzuca C, Marafon G, Venanzi M, De Zotti M. Building Supramolecular DNA‐Inspired Nanowires on Gold Surfaces: From 2D to 3D. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Emanuela Gatto
- Department of Chemical Science and TechnologiesUniversity of Rome Tor Vergata 00133 Rome Italy
| | - Sascha Kubitzky
- Faculty of Engineering and Natural SciencesTechnische Hochschule Wildau 15745 Wildau Germany
| | - Marc Schriever
- Faculty of Engineering and Natural SciencesTechnische Hochschule Wildau 15745 Wildau Germany
| | - Simona Cesaroni
- Department of Chemical Science and TechnologiesUniversity of Rome Tor Vergata 00133 Rome Italy
| | - Claudia Mazzuca
- Department of Chemical Science and TechnologiesUniversity of Rome Tor Vergata 00133 Rome Italy
| | - Giulia Marafon
- Department of Chemical SciencesUniversity of Padova 35131 Padova Italy
| | - Mariano Venanzi
- Department of Chemical Science and TechnologiesUniversity of Rome Tor Vergata 00133 Rome Italy
| | - Marta De Zotti
- Department of Chemical SciencesUniversity of Padova 35131 Padova Italy
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6
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Gatto E, Kubitzky S, Schriever M, Cesaroni S, Mazzuca C, Marafon G, Venanzi M, De Zotti M. Building Supramolecular DNA-Inspired Nanowires on Gold Surfaces: From 2D to 3D. Angew Chem Int Ed Engl 2019; 58:7308-7312. [PMID: 30908767 DOI: 10.1002/anie.201901683] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/18/2019] [Indexed: 01/09/2023]
Abstract
Three building blocks have been designed to chemically link to a gold surface and vertically self-assemble through thymine-adenine hydrogen bonds. Starting from these building blocks, two different films were engineered on gold surface. Film 1 consists of adenine linked to lipoic acid (Lipo-A) to covalently bind to the gold surface, and ZnTPP linked to a thymine (T-ZnTPP). Film 2 has an additional noncovalently linked layer: a helical undecapeptide analogue of the trichogin GA IV peptide, in which four glycines were replaced by four lysines to favor a helical conformation and reduce flexibility and the two extremities were functionalized with thymine and adenine to enable Lipo-A and T-ZnTPP binding, respectively. These films were characterized by electrochemical and spectroscopic techniques, and were very stable over time and when in contact with solution. Under illumination, they could generate current with higher efficiency than similar previously described systems.
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Affiliation(s)
- Emanuela Gatto
- Department of Chemical Science and Technologies, University of Rome, Tor Vergata, 00133, Rome, Italy
| | - Sascha Kubitzky
- Faculty of Engineering and Natural Sciences, Technische Hochschule Wildau, 15745, Wildau, Germany
| | - Marc Schriever
- Faculty of Engineering and Natural Sciences, Technische Hochschule Wildau, 15745, Wildau, Germany
| | - Simona Cesaroni
- Department of Chemical Science and Technologies, University of Rome, Tor Vergata, 00133, Rome, Italy
| | - Claudia Mazzuca
- Department of Chemical Science and Technologies, University of Rome, Tor Vergata, 00133, Rome, Italy
| | - Giulia Marafon
- Department of Chemical Sciences, University of Padova, 35131, Padova, Italy
| | - Mariano Venanzi
- Department of Chemical Science and Technologies, University of Rome, Tor Vergata, 00133, Rome, Italy
| | - Marta De Zotti
- Department of Chemical Sciences, University of Padova, 35131, Padova, Italy
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7
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Microbial nanowires - Electron transport and the role of synthetic analogues. Acta Biomater 2018; 69:1-30. [PMID: 29357319 DOI: 10.1016/j.actbio.2018.01.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 01/07/2018] [Accepted: 01/09/2018] [Indexed: 02/07/2023]
Abstract
Electron transfer is central to cellular life, from photosynthesis to respiration. In the case of anaerobic respiration, some microbes have extracellular appendages that can be utilised to transport electrons over great distances. Two model organisms heavily studied in this arena are Shewanella oneidensis and Geobacter sulfurreducens. There is some debate over how, in particular, the Geobacter sulfurreducens nanowires (formed from pilin nanofilaments) are capable of achieving the impressive feats of natural conductivity that they display. In this article, we outline the mechanisms of electron transfer through delocalised electron transport, quantum tunnelling, and hopping as they pertain to biomaterials. These are described along with existing examples of the different types of conductivity observed in natural systems such as DNA and proteins in order to provide context for understanding the complexities involved in studying the electron transport properties of these unique nanowires. We then introduce some synthetic analogues, made using peptides, which may assist in resolving this debate. Microbial nanowires and the synthetic analogues thereof are of particular interest, not just for biogeochemistry, but also for the exciting potential bioelectronic and clinical applications as covered in the final section of the review. STATEMENT OF SIGNIFICANCE Some microbes have extracellular appendages that transport electrons over vast distances in order to respire, such as the dissimilatory metal-reducing bacteria Geobacter sulfurreducens. There is significant debate over how G. sulfurreducens nanowires are capable of achieving the impressive feats of natural conductivity that they display: This mechanism is a fundamental scientific challenge, with important environmental and technological implications. Through outlining the techniques and outcomes of investigations into the mechanisms of such protein-based nanofibrils, we provide a platform for the general study of the electronic properties of biomaterials. The implications are broad-reaching, with fundamental investigations into electron transfer processes in natural and biomimetic materials underway. From these studies, applications in the medical, energy, and IT industries can be developed utilising bioelectronics.
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8
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Puiu M, Bala C. Peptide-based biosensors: From self-assembled interfaces to molecular probes in electrochemical assays. Bioelectrochemistry 2017; 120:66-75. [PMID: 29182910 DOI: 10.1016/j.bioelechem.2017.11.009] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 11/21/2017] [Accepted: 11/21/2017] [Indexed: 02/06/2023]
Abstract
Redox-tagged peptides have emerged as functional materials with multiple applications in the area of sensing and biosensing applications due to their high stability, excellent redox properties and versatility of biomolecular interactions. They allow direct observation of molecular interactions in a wide range of affinity and enzymatic assays and act as electron mediators. Short helical peptides possess the ability to self-assemble in specific configurations with the possibility to develop in highly-ordered, stable 1D, 2D and 3D architectures in a hierarchical controlled manner. We provide here a brief overview of the electrochemical techniques available to study the electron transfer in peptide films with particular interest in developing biosensors with immobilized peptide motifs, for biological and clinical applications.
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Affiliation(s)
- Mihaela Puiu
- R&D Center LaborQ, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
| | - Camelia Bala
- R&D Center LaborQ, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania; Department of Analytical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania.
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9
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Peptides as Bio-inspired Molecular Electronic Materials. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017. [PMID: 29081052 DOI: 10.1007/978-3-319-66095-0_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register]
Abstract
Understanding the electronic properties of single peptides is not only of fundamental importance to biology, but it is also pivotal to the realization of bio-inspired molecular electronic materials. Natural proteins have evolved to promote electron transfer in many crucial biological processes. However, their complex conformational nature inhibits a thorough investigation, so in order to study electron transfer in proteins, simple peptide models containing redox active moieties present as ideal candidates. Here we highlight the importance of secondary structure characteristic to proteins/peptides, and its relevance to electron transfer. The proposed mechanisms responsible for such transfer are discussed, as are details of the electrochemical techniques used to investigate their electronic properties. Several factors that have been shown to influence electron transfer in peptides are also considered. Finally, a comprehensive experimental and theoretical study demonstrates that the electron transfer kinetics of peptides can be successfully fine tuned through manipulation of chemical composition and backbone rigidity. The methods used to characterize the conformation of all peptides synthesized throughout the study are outlined, along with the various approaches used to further constrain the peptides into their geometric conformations. The aforementioned sheds light on the potential of peptides to one day play an important role in the fledgling field of molecular electronics.
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10
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Bisello A, Cardena R, Rossi S, Crisma M, Formaggio F, Santi S. Hydrogen-Bond-Assisted, Concentration-Dependent Molecular Dimerization of Ferrocenyl Hydantoins. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00248] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Annalisa Bisello
- Department
of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Roberta Cardena
- Department
of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Serena Rossi
- Department
of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Marco Crisma
- Institute
of Biomolecular Chemistry, Padova Unit, CNR, via Marzolo 1, 35131 Padova, Italy
| | - Fernando Formaggio
- Department
of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Saverio Santi
- Department
of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
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11
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Cosert KM, Steidl RJ, Castro-Forero A, Worden RM, Reguera G. Electronic characterization of Geobacter sulfurreducens pilins in self-assembled monolayers unmasks tunnelling and hopping conduction pathways. Phys Chem Chem Phys 2017; 19:11163-11172. [DOI: 10.1039/c7cp00885f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The peptide subunit of Geobacter nanowires (pili) metal-reducing bacterium Geobacter sulfurreducens was self-assembled as a conductive monolayer. Its electronic characterized revealed tunneling and hopping regimes.
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Affiliation(s)
- Krista M. Cosert
- Department of Microbiology and Molecular Genetics
- Michigan State University
- East Lansing
- USA
| | - Rebecca J. Steidl
- Department of Microbiology and Molecular Genetics
- Michigan State University
- East Lansing
- USA
| | | | - Robert M. Worden
- Department of Chemical Engineering
- Michigan State University
- East Lansing
- USA
| | - Gemma Reguera
- Department of Microbiology and Molecular Genetics
- Michigan State University
- East Lansing
- USA
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12
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Longo E, Wright K, Caruso M, Gatto E, Palleschi A, Scarselli M, De Crescenzi M, Crisma M, Formaggio F, Toniolo C, Venanzi M. Peptide flatlandia: a new-concept peptide for positioning of electroactive probes in proximity to a metal surface. NANOSCALE 2015; 7:15495-15506. [PMID: 26274368 DOI: 10.1039/c5nr03549j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A helical hexapeptide was designed to link in a rigid parallel orientation to a gold surface. The peptide sequence of the newly synthesized compound is characterized by the presence of two 4-amino-1,2-dithiolane-4-carboxylic acid (Adt) residues (positions 1 and 4) to promote a bidentate interaction with the gold surface, two L-Ala residues (positions 2 and 5) and two-aminoisobutyric acid (Aib) residues (positions 3 and 6) to favor a high population of the 310-helix conformation. Furthermore, a ferrocenoyl (Fc) probe was inserted at the N-terminus to investigate the electronic conduction properties of the peptide. X-Ray photoelectron spectroscopy and scanning tunneling microscopy techniques were used to characterize the binding of the peptide to the gold surface and the morphology of the peptide layer, respectively. Several electrochemical (cyclic voltammetry, chronoamperometry, square wave voltammetry) techniques were applied to analyze the electrochemical activity of the Fc probe, along with the influence of the peptide 3D-structure and the peptide layer morphology on electron transfer processes.
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Affiliation(s)
- Edoardo Longo
- ICB, Padova Unit, CNR, Department of Chemistry, University of Padova, 35131 Padova, Italy
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13
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Maeda H, Sakamoto R, Nishihara H. Rapid Electron Transport Phenomenon in the Bis(terpyridine) Metal Complex Wire: Marcus Theory and Electrochemical Impedance Spectroscopy Study. J Phys Chem Lett 2015; 6:3821-3826. [PMID: 26722877 DOI: 10.1021/acs.jpclett.5b01725] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The authors reported previously that bis(terpyiridne)iron(II) complex oligomer wires possess outstanding long-range intrawire electron transport ability. Here, molecular arrays of gold-electrode-bis(terpyridine)iron(II)-ferrocene are constructed by stepwise coordination as simple models of the oligomer wire system. The fast electron transfer between the terminal ferrocene and the gold electrode through the bis(terpyiridne)iron(II) complex unit is studied by potential step chronoamperometry (PSCA) and electrochemical impedance spectroscopy (EIS). Tafel plots derived from PSCA are analyzed based on Marcus theory. The plots reveal greater first-order electron transfer rate constant, weaker electronic coupling between the terminal ferrocene and the gold electrode, and smaller reorganization energy than shown by a conventional ferrocenylalkanethiol self-assembled monolayer. The electron transfer rate constants estimated by EIS agree with the PSCA results.
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Affiliation(s)
- Hiroaki Maeda
- Department of Chemistry, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ryota Sakamoto
- Department of Chemistry, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroshi Nishihara
- Department of Chemistry, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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14
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Amdursky N. Electron Transfer across Helical Peptides. Chempluschem 2015; 80:1075-1095. [DOI: 10.1002/cplu.201500121] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/06/2015] [Indexed: 02/05/2023]
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15
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Wu Z, Liu GQ, Yang XL, Jiang JH. Electrostatic nucleic acid nanoassembly enables hybridization chain reaction in living cells for ultrasensitive mRNA imaging. J Am Chem Soc 2015; 137:6829-36. [PMID: 25969953 DOI: 10.1021/jacs.5b01778] [Citation(s) in RCA: 255] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Efficient approaches for intracellular delivery of nucleic acid reagents to achieve sensitive detection and regulation of gene and protein expressions are essential for chemistry and biology. We develop a novel electrostatic DNA nanoassembly that, for the first time, realizes hybridization chain reaction (HCR), a target-initiated alternating hybridization reaction between two hairpin probes, for signal amplification in living cells. The DNA nanoassembly has a designed structure with a core gold nanoparticle, a cationic peptide interlayer, and an electrostatically assembled outer layer of fluorophore-labeled hairpin DNA probes. It is shown to have high efficiency for cellular delivery of DNA probes via a unique endocytosis-independent mechanism that confers a significant advantage of overcoming endosomal entrapment. Moreover, electrostatic assembly of DNA probes enables target-initialized release of the probes from the nanoassembly via HCR. This intracellular HCR offers efficient signal amplification and enables ultrasensitive fluorescence activation imaging of mRNA expression with a picomolar detection limit. The results imply that the developed nanoassembly may provide an invaluable platform in low-abundance biomarker discovery and regulation for cell biology and theranostics.
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Affiliation(s)
- Zhan Wu
- State Key Laboratory of Chemeo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Gao-Qin Liu
- State Key Laboratory of Chemeo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Xiao-Li Yang
- State Key Laboratory of Chemeo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Jian-Hui Jiang
- State Key Laboratory of Chemeo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
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16
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17
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Venanzi M, Gatto E, Caruso M, Porchetta A, Formaggio F, Toniolo C. Photoinduced Electron Transfer through Peptide-Based Self-Assembled Monolayers Chemisorbed on Gold Electrodes: Directing the Flow-in and Flow-out of Electrons through Peptide Helices. J Phys Chem A 2014; 118:6674-84. [DOI: 10.1021/jp503791w] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mariano Venanzi
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Emanuela Gatto
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Mario Caruso
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Alessandro Porchetta
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Fernando Formaggio
- Institute
of Biomolecular Chemistry, Padova Unit, CNR, Department of Chemistry, University of Padova, 35131 Padova, Italy
| | - Claudio Toniolo
- Institute
of Biomolecular Chemistry, Padova Unit, CNR, Department of Chemistry, University of Padova, 35131 Padova, Italy
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18
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Wuttke E, Hervault YM, Polit W, Linseis M, Erler P, Rigaut S, Winter RF. Divinylphenylene- and Ethynylvinylphenylene-Bridged Mono-, Di-, and Triruthenium Complexes for Covalent Binding to Gold Electrodes. Organometallics 2014. [DOI: 10.1021/om400642j] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Evelyn Wuttke
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße
10, D-78453 Konstanz, Germany
| | - Yves-Marie Hervault
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de
Beaulieu, F-35042 Rennes Cedex, France
| | - Walther Polit
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße
10, D-78453 Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße
10, D-78453 Konstanz, Germany
| | - Philipp Erler
- Fachbereich Physik, Universität Konstanz, Universitätsstraße
10, D-78453 Konstanz, Germany
| | - Stéphane Rigaut
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de
Beaulieu, F-35042 Rennes Cedex, France
| | - Rainer F. Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße
10, D-78453 Konstanz, Germany
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19
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Zheng J, Wu KL, Shi TH, Xu Y. A series of novel ferrocene-based dipeptide receptors for electrochemistry and biological activity. Appl Organomet Chem 2013. [DOI: 10.1002/aoc.3042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Juan Zheng
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Kong-Li Wu
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Tan-Hao Shi
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Yan Xu
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
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20
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Metal complex oligomer and polymer wires on electrodes: Tactical constructions and versatile functionalities. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.04.019] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Katagiri S, Sakamoto R, Maeda H, Nishimori Y, Kurita T, Nishihara H. Terminal Redox-Site Effect on the Long-Range Electron Conduction of Fe(tpy)2Oligomer Wires on a Gold Electrode. Chemistry 2013; 19:5088-96. [DOI: 10.1002/chem.201203913] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Indexed: 11/09/2022]
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22
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Moritoh R, Morita T, Kimura S. Photocurrent generation by helical peptide monolayers integrating light harvesting and charge-transport functions. Biopolymers 2013; 100:1-13. [DOI: 10.1002/bip.22174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 10/01/2012] [Accepted: 10/08/2012] [Indexed: 11/08/2022]
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23
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Bueno PR, Mizzon G, Davis JJ. Capacitance Spectroscopy: A Versatile Approach To Resolving the Redox Density of States and Kinetics in Redox-Active Self-Assembled Monolayers. J Phys Chem B 2012; 116:8822-9. [DOI: 10.1021/jp303700f] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paulo R. Bueno
- Instituto de Química, Universidade Estadual Paulista, CP 355, 14800-900,
Araraquara, São Paulo, Brazil
| | - Giulia Mizzon
- Department
of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
| | - Jason J. Davis
- Department
of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
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24
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Góes MS, Rahman H, Ryall J, Davis JJ, Bueno PR. A dielectric model of self-assembled monolayer interfaces by capacitive spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:9689-9699. [PMID: 22606947 DOI: 10.1021/la301281y] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The presence of self-assembled monolayers at an electrode introduces capacitance and resistance contributions that can profoundly affect subsequently observed electronic characteristics. Despite the impact of this on any voltammetry, these contributions are not directly resolvable with any clarity by standard electrochemical means. A capacitive analysis of such interfaces (by capacitance spectroscopy), introduced here, enables a clean mapping of these features and additionally presents a means of studying layer polarizability and Cole-Cole relaxation effects. The resolved resistive term contributes directly to an intrinsic monolayer uncompensated resistance that has a linear dependence on the layer thickness. The dielectric model proposed is fully aligned with the classic Helmholtz plate capacitor model and additionally explains the inherently associated resistive features of molecular films.
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Affiliation(s)
- Márcio S Góes
- Institute of Chemistry, Physical Chemistry Department, Universidade Estadual Paulista, São Paulo State University, UNESP, CP 355, 14800-900 Araraquara, São Paulo, Brazil
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25
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Han Y, Noguchi H, Sakaguchi K, Uosaki K. Formation process and solvent-dependent structure of a polyproline self-assembled monolayer on a gold surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:11951-11957. [PMID: 21902210 DOI: 10.1021/la2020995] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The formation process and structure of a self-assembled monolayer (SAM) of lipoic-acid-terminated polyproline on a gold surface in aqueous solution were investigated by several techniques. The amount of polyproline molecules on the gold surface was determined from the area of the reductive desorption peak, and orientation and thickness of the polyproline SAM were determined in situ by attenuated total reflection infrared (ATR-IR) spectroscopy and ellipsometry. The kinetics of the polyproline SAM formation process were discussed on the basis of these results. The in situ IR study confirmed that the conformation of the polyproline SAM was changed by changing the solvent from water to methanol and methanol to water, as is the case for polyproline dissolved in solution.
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Affiliation(s)
- Ying Han
- Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan
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26
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Donoli A, Marcuzzo V, Moretto A, Toniolo C, Cardena R, Bisello A, Santi S. Charge mapping in 3(10)-helical peptide chains by oxidation of the terminal ferrocenyl group. Org Lett 2011; 13:1282-5. [PMID: 21341757 DOI: 10.1021/ol102864s] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Two series of 3(10)-helical peptides of different lengths and rigidity, based on the strongly foldameric α-aminoisobutyric acid and containing a terminal ferrocenyl unit, have been synthesized. Oxidation-state sensitive spectroscopic tags of helical peptides, the N-H groups, allowed mapping of the charge delocalization triggered by oxidation of the terminal ferrocenyl moiety and were monitored by IR spectroelectrochemistry.
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Affiliation(s)
- Alessandro Donoli
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
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27
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Arikuma Y, Nakayama H, Morita T, Kimura S. Ultra-long-range electron transfer through a self-assembled monolayer on gold composed of 120-Å-long α-helices. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:1530-1535. [PMID: 21090665 DOI: 10.1021/la103882r] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Electron transfer through α-helices has attracted much attention from the viewpoints of their contributions to efficient long-range electron transfer occurring in biological systems and their utility as molecular-electronics elements. In this study, we synthesized a long 80mer helical peptide carrying a redox-active ferrocene unit at the terminal and immobilized the helical peptide on a gold surface. The molecular length is calculated to be 134 Å, in which the helix accounts for 120 Å. The preparation conditions of the self-assembled monolayers were intentionally changed to obtain monolayers with different physical states to study the correlation between molecular motions and electron transfer. Ellipsometry and infrared spectroscopy showed that the helical peptide forms a self-assembled monolayer with vertical orientation. Electrochemical measurements revealed that an electron is transferred from the ferrocene unit to gold through the monolayer composed of this long helical peptide, and the experimental data are well explained by theoretical results calculated under the assumption that electron transfer occurs by a unique hopping mechanism with the amide groups as hopping sites. Furthermore, we have observed a unique dependence of electron transfer on the monolayer packing, suggesting the importance of structural fluctuations of peptides on the electron transfer controlled by the hopping mechanism.
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Affiliation(s)
- Yoko Arikuma
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan
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28
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Scully CC, Lau YH, Jensen P, Rutledge PJ. Synthesis, electrochemistry and metal binding properties of monosubstituted ferrocenoyl peptides with thioether-containing sidechains. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.09.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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29
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Ochiai T, Nagata M, Shimoyama K, Amano M, Kondo M, Dewa T, Hashimoto H, Nango M. Immobilization of porphyrin derivatives with a defined distance and orientation onto a gold electrode using synthetic light-harvesting α-helix hydrophobic polypeptides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:14419-14422. [PMID: 20735025 DOI: 10.1021/la102869w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Molecular assembly of Zn-porphyrin pigments on a gold electrode using synthetic 1α-helix hydrophobic polypeptides which have similar amino acid sequences to the hydrophobic core in the native photosynthetic light-harvesting (LH) 1-β polypeptide from Rhodobacter sphaeroides has been achieved. This method is clearly successful in allowing assembly of porphyrins together with LH1 type functional complexes with a defined distance and orientation on the electrode. In this case, the photocurrent direction and the distance of electron transfer of pigments could be controlled by these synthetic LH1 model polypeptides. This method will be useful for the self-assembly of these pigment and protein complexes in order to study the energy transfer and electron transfer reactions between individual pigments in the supramolecular complexes on the electrode, as well as to provide insight into the effect of the distance and orientation of pigments and the effect of the structure of 1α-helix hydrophobic polypeptide on the energy transfer and electron transfer reactions.
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Affiliation(s)
- Tsuyoshi Ochiai
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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30
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Eckermann AL, Feld DJ, Shaw JA, Meade TJ. Electrochemistry of redox-active self-assembled monolayers. Coord Chem Rev 2010; 254:1769-1802. [PMID: 20563297 PMCID: PMC2885823 DOI: 10.1016/j.ccr.2009.12.023] [Citation(s) in RCA: 359] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Redox-active self-assembled monolayers (SAMs) provide an excellent platform for investigating electron transfer kinetics. Using a well-defined bridge, a redox center can be positioned at a fixed distance from the electrode and electron transfer kinetics probed using a variety of electrochemical techniques. Cyclic voltammetry, AC voltammetry, electrochemical impedance spectroscopy, and chronoamperometry are most commonly used to determine the rate of electron transfer of redox-activated SAMs. A variety of redox species have been attached to SAMs, and include transition metal complexes (e.g., ferrocene, ruthenium pentaammine, osmium bisbipyridine, metal clusters) and organic molecules (e.g., galvinol, C(60)). SAMs offer an ideal environment to study the outer-sphere interactions of redox species. The composition and integrity of the monolayer and the electrode material influence the electron transfer kinetics and can be investigated using electrochemical methods. Theoretical models have been developed for investigating SAM structure. This review discusses methods and monolayer compositions for electrochemical measurements of redox-active SAMs.
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31
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Guerrero AR, Caballero L, Adeva A, Melo F, Kogan MJ. Exploring the surface charge on peptide-gold nanoparticle conjugates by force spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:12026-12032. [PMID: 20557062 DOI: 10.1021/la1014237] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The conformation and charge exposure of peptides attached to colloidal gold nanoparticles (AuNPs) are critical for both the colloidal stability and for the recognition of biological targets in biomedical applications such as diagnostics and therapy. We prepared conjugates of AuNPs and three isomer peptides capable of recognizing toxic aggregates of the amyloid beta protein (Abeta) involved in Alzheimer's disease, namely, CLPFFD-CONH(2) (i0), CDLPFF-CONH(2) (i1), and CLPDFF-CONH(2) (i2), where D is the amino acid aspartic acid that is negatively charged at pH = 7.4. We then studied the effect of peptide sequence on the charge exposure through force spectroscopy measurements. The peptide-AuNPs conjugates were fixed on glass surfaces, and their interactions with peptide-functionalized tips were determined. Our results show a higher density of surface charge in the conjugates of the isomers i0 and i2 and a lower density in i1, which is due to the higher degree of functionalization in the first two compared with the third. However, the charge per molecule of the peptide is higher for i1 with respect to i0 and i2, which could be related to the local conformation that the peptides adopt on the surface. The acid-base behavior of the peptide anchored to the AuNPs is different than expected in aqueous solutions of free peptides, which could be related to the low accessibility of the NH(2)-terminal group belonging to the cysteine that is located near the AuNPs surface. In contrast with other techniques, the fixation of the peptide-AuNPs conjugates to a surface allows for characterization of the local charge exposure of peptides anchored to AuNPs over a wide range of pH.
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Affiliation(s)
- Ariel R Guerrero
- Materials and Surface Science Group, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada
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32
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Arikuma Y, Nakayama H, Morita T, Kimura S. Electron Hopping over 100 Å Along an α Helix. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200905621] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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33
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Arikuma Y, Nakayama H, Morita T, Kimura S. Electron Hopping over 100 Å Along an α Helix. Angew Chem Int Ed Engl 2010; 49:1800-4. [DOI: 10.1002/anie.200905621] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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34
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MORITA T, WATANABE J, TAKEDA K, KAI M, ARIKUMA Y, OKAMOTO S, KIMURA S. Long-Range Electron Transfer through Self-Assembled Monolayers Composed of Helical Peptides Carrying a Ferrocene Unit at the Terminal. KOBUNSHI RONBUNSHU 2009. [DOI: 10.1295/koron.66.406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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