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Rabah J, Nasrallah H, Wright K, Gérard I, Fensterbank H, Bui TTV, Marrot J, Tran TT, Fatima A, Ha-Thi MH, Méallet R, Burdzinski G, Clavier G, Boujday S, Cachet H, Debiemme-Chouvy C, Maisonhaute E, Vallée A, Allard E. Clicked BODIPY-Fullerene-Peptide Assemblies: Studies of Electron Transfer Processes in Self-Assembled Monolayers on Gold Surfaces. Chempluschem 2024; 89:e202300717. [PMID: 38406894 DOI: 10.1002/cplu.202300717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/30/2024] [Accepted: 02/23/2024] [Indexed: 02/27/2024]
Abstract
Two BODIPY-C60-peptide assemblies were synthesized by CuAAC reactions of BODIPY-C60 dyads and a helical peptide functionalized with a terminal alkyne group and an azide group, respectively. The helical peptide within these assemblies was functionalized at its other end by a disulfide group, allowing formation of self-assembled monolayers (SAMs) on gold surfaces. Characterizations of these SAMs, as well as those of reference molecules (BODIPY-C60-alkyl, C60-peptide and BODIPY-peptide), were carried out by PM-IRRAS and cyclic voltammetry. BODIPY-C60-peptide SAMs are more densely packed than BODIPY-C60-alkyl and BODIPY-peptide based SAMs. These findings were attributed to the rigid peptide helical conformation along with peptide-peptide and C60-C60 interactions within the monolayers. However, less dense monolayers were obtained with the target assemblies compared to the C60-peptide, as the BODIPY entity likely disrupts organization within the monolayers. Finally, electron transfer kinetics measurements by ultra-fast electrochemistry experiments demonstrated that the helical peptide is a better electron mediator in comparison to alkyl chains. This property was exploited along with those of the BODIPY-C60 dyads in a photo-current generation experiment by converting the resulting excited and/or charge separated states from photo-illumination of the dyad into electrical energy.
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Affiliation(s)
- Jad Rabah
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
| | - Houssein Nasrallah
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
| | - Karen Wright
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
| | - Isabelle Gérard
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
| | - Hélène Fensterbank
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
| | - Thi-Tuyet-Van Bui
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
| | - Jérôme Marrot
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
| | - Thu-Trang Tran
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France
| | - Anam Fatima
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France
| | - Minh-Huong Ha-Thi
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France
| | - Rachel Méallet
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France
| | - Gotard Burdzinski
- Adam Mickiewicz University, Poznan, Faculty of Physics Poznań, PL-61614, Poznan, Poland
| | - Gilles Clavier
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 91190, Gif-sur-Yvette, France
| | - Souhir Boujday
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface (LRS), 4 place Jussieu, F-75005, Paris, France
| | - Hubert Cachet
- Laboratoire Interfaces et Systèmes Electrochimiques, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris, France
| | - Catherine Debiemme-Chouvy
- Laboratoire Interfaces et Systèmes Electrochimiques, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris, France
| | - Emmanuel Maisonhaute
- Laboratoire Interfaces et Systèmes Electrochimiques, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris, France
| | - Anne Vallée
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface (LRS), 4 place Jussieu, F-75005, Paris, France
| | - Emmanuel Allard
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
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Forlano N, Bucci R, Contini A, Venanzi M, Placidi E, Gelmi ML, Lettieri R, Gatto E. Non-Conventional Peptide Self-Assembly into a Conductive Supramolecular Rope. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13020333. [PMID: 36678086 PMCID: PMC9867255 DOI: 10.3390/nano13020333] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 05/27/2023]
Abstract
Structures composed of alternating α and β amino acids can give rise to peculiar secondary structural motifs, which could self-assemble into complex structures of controlled geometries. This work describes the self-assembly properties of an α,β-peptide, containing three units of syn H2-(2-F-Phe)-h-PheGly-OH, able to self-organize on surfaces into a fascinating supramolecular rope. This material was characterized by AFM, electronic conduction and fluorescence measurements. Molecular dynamics simulations showed that this hexapeptide can self-assemble into an antiparallel β-sheet layer, stabilized by intermolecular H-bonds, which, in turn, can self-assemble into many side-by-side layers, due to π-π interactions. As a matter of fact, we demonstrated that in this system, the presence of aromatic residues at the intramolecular interface promoted by the alternation of α,β-amino-acids in the primary sequence, endorses the formation of a super-secondary structure where the aromatic groups are close to each other, conferring to the system good electron conduction properties. This work demonstrates the capability and future potential of designing and fabricating distinctive nanostructures and efficient bioelectronic interfaces based on an α,β-peptide, by controlling structure and interaction processes beyond those obtained with α- or β-peptides alone.
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Affiliation(s)
- Nicola Forlano
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
| | - Raffaella Bucci
- Department of Pharmaceutical Sciences, University of Milan, Via Venezian 21, 20133 Milan, Italy
| | - Alessandro Contini
- Department of Pharmaceutical Sciences, University of Milan, Via Venezian 21, 20133 Milan, Italy
| | - Mariano Venanzi
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
| | - Ernesto Placidi
- Department of Physics, Sapienza University of Rome, P.le Aldo Moro 2, 00185 Rome, Italy
| | - Maria Luisa Gelmi
- Department of Pharmaceutical Sciences, University of Milan, Via Venezian 21, 20133 Milan, Italy
| | - Raffaella Lettieri
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
| | - Emanuela Gatto
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
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3
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Abstract
In September 2015, the ONU approved the Global Agenda for Sustainable Development, by which all countries of the world are mobilized to adopt a set of goals to be achieved by 2030. Within these goals, the aim of having a responsible production and consumption, as well as taking climate action, made is necessary to design new eco-friendly materials. Another important UN goal is the possibility for all the countries in the world to access affordable energy. The most promising and renewable energy source is solar energy. Current solar cells use non-biodegradable substrates, which generally contribute to environmental pollution at the end of their life cycles. Therefore, the production of green and biodegradable electronic devices is a great challenge, prompted by the need to find sustainable alternatives to the current materials, particularly in the field of dye-sensitized solar cells. Within the green alternatives, biopolymers extracted from biomass, such as polysaccharides and proteins, represent the most promising materials in view of a circular economy perspective. In particular, peptides, due to their stability, good self-assembly properties, and ease of functionalization, may be good candidates for the creation of dye sensitized solar cell (DSSC) technology. This work shows an overview of the use of peptides in DSSC. Peptides, due to their unique self-assembling properties, have been used both as dyes (mimicking natural photosynthesis) and as templating materials for TiO2 morphology. We are just at the beginning of the exploitation of these promising biomolecules, and a great deal of work remains to be done.
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4
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Gatto E, Toniolo C, Venanzi M. Peptide Self-Assembled Nanostructures: From Models to Therapeutic Peptides. NANOMATERIALS 2022; 12:nano12030466. [PMID: 35159810 PMCID: PMC8838750 DOI: 10.3390/nano12030466] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 11/25/2022]
Abstract
Self-assembly is the most suitable approach to obtaining peptide-based materials on the nano- and mesoscopic scales. Applications span from peptide drugs for personalized therapy to light harvesting and electron conductive media for solar energy production and bioelectronics, respectively. In this study, we will discuss the self-assembly of selected model and bioactive peptides, in particular reviewing our recent work on the formation of peptide architectures of nano- and mesoscopic size in solution and on solid substrates. The hierarchical and cooperative characters of peptide self-assembly will be highlighted, focusing on the structural and dynamical properties of the peptide building blocks and on the nature of the intermolecular interactions driving the aggregation phenomena in a given environment. These results will pave the way for the understanding of the still-debated mechanism of action of an antimicrobial peptide (trichogin GA IV) and the pharmacokinetic properties of a peptide drug (semaglutide) currently in use for the therapy of type-II diabetes.
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Affiliation(s)
- Emanuela Gatto
- PEPSA-LAB, Department of Chemical Science and Technologies, University of Rome, Tor Vergata, 00133 Rome, Italy;
| | - Claudio Toniolo
- Department of Chemical Sciences, University of Padua, 35131 Padua, Italy;
| | - Mariano Venanzi
- PEPSA-LAB, Department of Chemical Science and Technologies, University of Rome, Tor Vergata, 00133 Rome, Italy;
- Correspondence: ; Tel.: +39-06-7259-4468
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5
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Jeevan AK, Gopidas KR. Self-Assembly and Photochemistry of a Pyrene-Methyl Viologen Supramolecular Fiber System. J Phys Chem B 2021; 125:8539-8549. [PMID: 34313435 DOI: 10.1021/acs.jpcb.1c04417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This paper reports the self-assembly of a donor-acceptor system into nanoscopic structures and the photo processes taking place within these structures. The donor employed is pyrene linked to two β-cyclodextrin molecules (CD-PY-CD), and adamantane-linked methyl viologen attached to the three arms of mesitylene (Ms-(MV2+-AD)3) is the acceptor. CD-PY-CD and Ms-(MV2+-AD)3 when dissolved in water self-assembled into vesicles, which joined together to give long fibers. The self-assembly was studied using spectroscopic and microscopic techniques. Fluorescence of the pyrene chromophore was quenched within the self-assembled system due to efficient photoinduced electron transfer to methyl viologen. Photoinduced electron transfer within the assembly is confirmed through identification of product radical ions in flash photolysis experiments. Steady-state irradiation of the self-assembled system in an optical bench led to the formation of methyl viologen radical cation, which was stable for a few hours. Longevity of the radical cation was attributed to the fast reaction of pyrene radical cation with adjacent pyrene to give an unstable adduct, which slows down the back electron transfer process.
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Affiliation(s)
- Athira K Jeevan
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 200 002, India
| | - Karical R Gopidas
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 200 002, India
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6
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Kubitzky S, Venanzi M, Biondi B, Lettieri R, De Zotti M, Gatto E. A pH-Induced Reversible Conformational Switch Able to Control the Photocurrent Efficiency in a Peptide Supramolecular System. Chemistry 2021; 27:2810-2817. [PMID: 33107646 DOI: 10.1002/chem.202004527] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Indexed: 11/06/2022]
Abstract
External stimuli are potent tools that Nature uses to control protein function and activity. For instance, during viral entry and exit, pH variations are known to trigger large protein conformational changes. In Nature, also the electron transfer (ET) properties of ET proteins are influenced by pH-induced conformational changes. In this work, a pH-controlled, reversible 310 -helix to α-helix conversion (from acidic to highly basic pH values and vice versa) of a peptide supramolecular system built on a gold surface is described. The effect of pH on the ability of the peptide SAM to generate a photocurrent was investigated, with particular focus on the effect of the pH-induced conformational change on photocurrent efficiency. The films were characterized by electrochemical and spectroscopic techniques, and were found to be very stable over time, also in contact with a solution. They were also able to generate current under illumination, with an efficiency that is the highest recorded so far with biomolecular systems.
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Affiliation(s)
- Sascha Kubitzky
- Faculty of Engineering and Natural Sciences, Technische Hochschule Wildau, Wildau, 15745, Germany
| | - Mariano Venanzi
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Barbara Biondi
- Institute of Biomolecular Chemistry, Padova Unit, CNR, Department of Chemistry, University of Padova, 35131, Padova, Italy
| | - Raffaella Lettieri
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Marta De Zotti
- Institute of Biomolecular Chemistry, Padova Unit, CNR, Department of Chemistry, University of Padova, 35131, Padova, Italy
| | - Emanuela Gatto
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, 00133, Rome, Italy
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7
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Gerbelli BB, Ly I, Pedemay S, Alves WA, de Oliveira EA. The Role of Amylogenic Fiber Aggregation on the Elasticity of a Lipid Membrane. ACS APPLIED BIO MATERIALS 2020; 3:815-822. [PMID: 35019285 DOI: 10.1021/acsabm.9b00861] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This work presents a systematic study of the swelling behavior of a lecithin lamellar phase incorporating different amounts of the short peptide sequence diphenylalanine (FF). Small- and wide-angle X-ray scattering assays provide relevant information about the structure and elasticity of the lamellar stacking. These data show that important changes occur at the interface of the lipid membrane dependent not only on the peptide content but also on the hydration of the lamellar structure. Multilamellar-to-unilamellar transitions, previously observed for an increasing number of peptides, are now observed to be dependent on the hydration of the lamellar phase. Wide-angle X-ray scattering and electron microscopy observations (TEM) provide experimental evidence of peptide aggregation into long amylogenic fibers. We argue that aggregates that partition in water may become large enough to destabilize the lamellar structure. It is also shown that, for a given peptide concentration, the lamellar structure can be rendered more flexible or more rigid, by tuning the hydration.
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Affiliation(s)
- Barbara B Gerbelli
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, Brazil
| | - Isabelle Ly
- Centre de Recherche Paul Pascal, University of Bordeau, 33600 Pessac, France
| | - Sandra Pedemay
- Centre de Recherche Paul Pascal, University of Bordeau, 33600 Pessac, France
| | - Wendel A Alves
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, Brazil
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8
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Marafon G, Moretto A, Zanuy D, Alemán C, Crisma M, Toniolo C. Effect on the Conformation of a Terminally Blocked, ( E) β,γ-Unsaturated δ-Amino Acid Residue Induced by Carbon Methylation. J Org Chem 2020; 85:1513-1524. [PMID: 31769989 DOI: 10.1021/acs.joc.9b02544] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Peptides are well-known to play a fundamental therapeutic role and to represent building blocks for numerous useful biomaterials. Stabilizing their active 3D-structure by appropriate modifications remains, however, a challenge. In this study, we have expanded the available literature information on the conformational propensities of a promising backbone change of a terminally blocked δ-amino acid residue, a dipeptide mimic, by replacing its central amide moiety with an (E) Cβ═Cγ alkene unit. Specifically, we have examined by DFT calculations, X-ray diffraction in the crystalline state, and FT-IR absorption/NMR spectroscopies in solution the extended vs folded preferences of analogues of this prototype system either unmodified or possessing single or multiple methyl group substituents on each of its four -CH2-CH═CH-CH2- main-chain carbon atoms. The theoretical and experimental results obtained clearly point to the conclusion that increasing the number of adequately positioned methylations will enhance the preference of the original sequence to fold, thus opening interesting perspectives in the design of conformationally constrained peptidomimetics.
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Affiliation(s)
- Giulia Marafon
- Department of Chemical Sciences , University of Padova , 35131 Padova , Italy
| | - Alessandro Moretto
- Department of Chemical Sciences , University of Padova , 35131 Padova , Italy.,Institute of Biomolecular Chemistry , Padova Unit, CNR , 35131 Padova , Italy
| | - David Zanuy
- Department of Chemical Engineering and Barcelona Research Center in Multiscale Science and Engineering , Universitat Polytècnica de Catalunya , 08019 Barcelona , Spain
| | - Carlos Alemán
- Department of Chemical Engineering and Barcelona Research Center in Multiscale Science and Engineering , Universitat Polytècnica de Catalunya , 08019 Barcelona , Spain.,Institute for Bioengineering of Catalonia (IBEC) , The Barcelona Institute of Science and Technology , Baldiri Reixac 10-12 , 08028 Barcelona Spain
| | - Marco Crisma
- Institute of Biomolecular Chemistry , Padova Unit, CNR , 35131 Padova , Italy
| | - Claudio Toniolo
- Department of Chemical Sciences , University of Padova , 35131 Padova , Italy.,Institute of Biomolecular Chemistry , Padova Unit, CNR , 35131 Padova , Italy
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9
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Gerbelli BB, Vassiliades SV, Rojas JEU, Pelin JNBD, Mancini RSN, Pereira WSG, Aguilar AM, Venanzi M, Cavalieri F, Giuntini F, Alves WA. Hierarchical Self‐Assembly of Peptides and its Applications in Bionanotechnology. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900085] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Barbara B. Gerbelli
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André 09210–580 Brazil
| | - Sandra V. Vassiliades
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André 09210–580 Brazil
| | - Jose E. U. Rojas
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André 09210–580 Brazil
| | - Juliane N. B. D. Pelin
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André 09210–580 Brazil
| | - Rodrigo S. N. Mancini
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André 09210–580 Brazil
| | - Wallace S. G. Pereira
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André 09210–580 Brazil
| | - Andrea M. Aguilar
- Instituto de Ciências AmbientaisQuímicas e FarmacêuticasUniversidade Federal de São Paulo Diadema 09972270 Brazil
| | - Mariano Venanzi
- Department of Chemical Science and TechnologiesUniversity of Rome Tor Vergata Via Cracovia, 50 00133 Roma RM Italy
| | - Francesca Cavalieri
- Department of Chemical Science and TechnologiesUniversity of Rome Tor Vergata Via Cracovia, 50 00133 Roma RM Italy
- Department of Chemical and Biomolecular EngineeringThe University of Melbourne Parkville Vitória 3010 Australia
| | - Francesca Giuntini
- School of Pharmacy and Biomolecular SciencesLiverpool John Moores University Byrom Street Liverpool L3 3AF UK
| | - Wendel A. Alves
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André 09210–580 Brazil
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10
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Gong C, Sun S, Zhang Y, Sun L, Su Z, Wu A, Wei G. Hierarchical nanomaterials via biomolecular self-assembly and bioinspiration for energy and environmental applications. NANOSCALE 2019; 11:4147-4182. [PMID: 30806426 DOI: 10.1039/c9nr00218a] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bioinspired synthesis offers potential green strategies to build highly complex nanomaterials by utilizing the unique nanostructures, functions, and properties of biomolecules, in which the biomolecular recognition and self-assembly processes play important roles in tailoring the structures and functions of bioinspired materials. Further understanding of biomolecular self-assembly for inspiring the formation and assembly of nanoparticles would promote the design and fabrication of functional nanomaterials for various applications. In this review, we focus on recent advances in bioinspired synthesis and applications of hierarchical nanomaterials based on biomolecular self-assembly. We first discuss biomolecular self-assembly towards biological nanomaterials, in which the mechanisms and ways of biomolecular self-assembly as well as various self-assembled biomolecular nanostructures are demonstrated. Secondly, the bioinspired synthesis strategies including molecule-molecule interaction, molecule-material recognition, molecule-mediated nucleation and growth, and molecule-mediated reduction/oxidation are introduced and discussed. Meanwhile, typical examples and discussions on how biomolecular self-assembly inspires the formation of hierarchical hybrid nanomaterials are presented. Finally, the applications of bioinspired nanomaterials in biofuel cells, light-harvesting systems, batteries, supercapacitors, catalysis, water/air purification, and environmental monitoring are presented and discussed. We believe that this review will be very helpful for readers to understand the self-assembly of biomolecules and the biomimetic/bioinspired strategies for synthesizing hierarchical nanomaterials on the one hand, and on the other hand to design novel materials for extended applications in nanotechnology, materials science, analytical science, and biomedical engineering.
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Affiliation(s)
- Coucong Gong
- Faculty of Production Engineering and Center for Environmental Research and Sustainable technology (UFT), University of Bremen, D-28359 Bremen, Germany.
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11
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Amit M, Yuran S, Gazit E, Reches M, Ashkenasy N. Tailor-Made Functional Peptide Self-Assembling Nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707083. [PMID: 29989255 DOI: 10.1002/adma.201707083] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 04/05/2018] [Indexed: 05/08/2023]
Abstract
Noncovalent interactions are the main driving force in the folding of proteins into a 3D functional structure. Motivated by the wish to reveal the mechanisms of the associated self-assembly processes, scientists are focusing on studying self-assembly processes of short protein segments (peptides). While this research has led to major advances in the understanding of biological and pathological process, only in recent years has the applicative potential of the resulting self-assembled peptide assemblies started to be explored. Here, major advances in the development of biomimetic supramolecular peptide assemblies as coatings, gels, and as electroactive materials, are highlighted. The guiding lines for the design of helical peptides, β strand peptides, as well as surface binding monolayer-forming peptides that can be utilized for a specific function are highlighted. Examples of their applications in diverse immerging applications in, e.g., ecology, biomedicine, and electronics, are described. Taking into account that, in addition to extraordinary design flexibility, these materials are naturally biocompatible and ecologically friendly, and their production is cost effective, the emergence of devices incorporating these biomimetic materials in the market is envisioned in the near future.
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Affiliation(s)
- Moran Amit
- Department of Materials Engineering, Ben Gurion University of the Negev, Beer-Sheva, 84105, Israel
- Department of Electrical and Computer Engineering, UC San Diego, La Jolla, CA, 92093-0407, USA
| | - Sivan Yuran
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, Department of Materials Science and Engineering, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Meital Reches
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Nurit Ashkenasy
- Department of Materials Engineering, Ben Gurion University of the Negev, Beer-Sheva, 84105, Israel
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12
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Gatto E, Palleschi ME, Zangrilli B, De Zotti M, Di Napoli B, Palleschi A, Mazzuca C, Formaggio F, Toniolo C, Venanzi M. The several facets of Trichogin GA IV: High affinity Tb(III) binding properties. A spectroscopic and molecular dynamics simulation study. Pept Sci (Hoboken) 2018. [DOI: 10.1002/pep2.24081] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Emanuela Gatto
- Department of Chemical Science and TechnologiesUniversity of Rome “Tor Vergata”Rome00133 Italy
| | - Maria Elena Palleschi
- Department of Chemical Science and TechnologiesUniversity of Rome “Tor Vergata”Rome00133 Italy
| | - Beatrice Zangrilli
- Department of Chemical Science and TechnologiesUniversity of Rome “Tor Vergata”Rome00133 Italy
| | - Marta De Zotti
- Institute of Biomolecular Chemistry, Padova Unit, CNR, Department of ChemistryUniversity of PadovaPadova35131 Italy
| | - Benedetta Di Napoli
- Department of Chemical Science and TechnologiesUniversity of Rome “Tor Vergata”Rome00133 Italy
| | - Antonio Palleschi
- Department of Chemical Science and TechnologiesUniversity of Rome “Tor Vergata”Rome00133 Italy
| | - Claudia Mazzuca
- Department of Chemical Science and TechnologiesUniversity of Rome “Tor Vergata”Rome00133 Italy
| | - Fernando Formaggio
- Institute of Biomolecular Chemistry, Padova Unit, CNR, Department of ChemistryUniversity of PadovaPadova35131 Italy
| | - Claudio Toniolo
- Institute of Biomolecular Chemistry, Padova Unit, CNR, Department of ChemistryUniversity of PadovaPadova35131 Italy
| | - Mariano Venanzi
- Department of Chemical Science and TechnologiesUniversity of Rome “Tor Vergata”Rome00133 Italy
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13
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De Zotti M, Muzzi B, Gatto E, Di Napoli B, Mazzuca C, Palleschi A, Placidi E, Formaggio F, Toniolo C, Venanzi M. Tuning the Morphology of Nanostructured Peptide Films by the Introduction of a Secondary Structure Conformational Constraint: A Case Study of Hierarchical Self-Assembly. J Phys Chem B 2018; 122:6305-6313. [PMID: 29792795 DOI: 10.1021/acs.jpcb.8b01877] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Peptide self-assembly is ubiquitous in nature. It governs the organization of proteins, controlling their folding kinetics and preserving their structural stability and bioactivity. In this connection, model oligopeptides may give important insights into the molecular mechanisms and elementary forces driving the formation of supramolecular structures. In this contribution, we show that a single residue substitution, that is, Aib (α-aminoisobutyric acid) in place of Ala at position 4 of an -(l-Ala)5-homo-oligomer, strongly alters the aggregation process. In particular, this process is initiated by the formation of small peptide clusters that promote aggregation on the nanometer scale and, through a hierarchical self-assembly, lead to mesoscopic structures of micrometric dimensions. Furthermore, we show that the use of the well-established Langmuir-Blodgett technique represents an effective strategy for coating extended areas of inorganic substrates by densely packed peptide layers, thus paving the way for application of peptide films as templates for biomineralization, biocompatible coating of surfaces, and scaffolds for tissue engineering.
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Affiliation(s)
- Marta De Zotti
- Department of Chemistry , University of Padova , Via Marzolo 1 , 35131 Padova , Italy
| | - Beatrice Muzzi
- Department of Chemical Science and Technologies , University of Rome "Tor Vergata" , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Emanuela Gatto
- Department of Chemical Science and Technologies , University of Rome "Tor Vergata" , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Benedetta Di Napoli
- Department of Chemical Science and Technologies , University of Rome "Tor Vergata" , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Claudia Mazzuca
- Department of Chemical Science and Technologies , University of Rome "Tor Vergata" , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Antonio Palleschi
- Department of Chemical Science and Technologies , University of Rome "Tor Vergata" , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Ernesto Placidi
- ISM Unit, CNR, Department of Physics, University of Rome "Tor Vergata" , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Fernando Formaggio
- ICB Unit, CNR, Department of Chemistry, University of Padova , 35131 Padova , Italy
| | - Claudio Toniolo
- ICB Unit, CNR, Department of Chemistry, University of Padova , 35131 Padova , Italy
| | - Mariano Venanzi
- Department of Chemical Science and Technologies , University of Rome "Tor Vergata" , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
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14
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Nasrallah H, Rabah J, Bui-Thi-Tuyet V, Baczko K, Fensterbank H, Bourdreux F, Goncalves AM, Declerck V, Boujday S, Humblot V, Wright K, Vallée A, Allard E. A fullerene helical peptide: synthesis, characterization and formation of self-assembled monolayers on gold surfaces. NEW J CHEM 2018. [DOI: 10.1039/c8nj04599b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A helical C60-peptide allowed the formation of well-packed SAMs compared to a C60-alkyl peptide, which was determined by QCM and CV experiments.
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15
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Caruso M, Gatto E, Palleschi A, Morales P, Scarselli M, Casaluci S, Quatela A, Di Carlo A, Venanzi M. A bioinspired dye sensitized solar cell based on a rhodamine-functionalized peptide immobilized on nanocrystalline TiO 2. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.07.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Misra R, Saseendran A, George G, Veeresh K, Raja KMP, Raghothama S, Hofmann HJ, Gopi HN. Structural Dimorphism of Achiral α,γ-Hybrid Peptide Foldamers: Coexistence of 12- and 15/17-Helices. Chemistry 2017; 23:3764-3772. [DOI: 10.1002/chem.201605753] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Indexed: 01/17/2023]
Affiliation(s)
- Rajkumar Misra
- Department of Chemistry; Indian Institution of Science Education and Research; Dr. Homi Bhabha Road Pune 411021 India
| | - Abhijith Saseendran
- Department of Chemistry; Indian Institution of Science Education and Research; Dr. Homi Bhabha Road Pune 411021 India
| | - Gijo George
- NMR Research Center; Indian Institute of Science; Bangalore 560012 India
| | - Kuruva Veeresh
- Department of Chemistry; Indian Institution of Science Education and Research; Dr. Homi Bhabha Road Pune 411021 India
| | - K. Muruga Poopathi Raja
- Department of Physical Chemistry; School of Chemistry; Madurai Kamaraj University; Madurai 625 021 India
| | | | - Hans-Jörg Hofmann
- Institute of Biochemistry; Faculty of Biosciences, Pharmacy and Psychology; Talstraße 33 04103 Leipzig Germany
| | - Hosahudya N. Gopi
- Department of Chemistry; Indian Institution of Science Education and Research; Dr. Homi Bhabha Road Pune 411021 India
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17
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Venanzi M, Gatto E, Formaggio F, Toniolo C. The importance of being Aib. Aggregation and self-assembly studies on conformationally constrained oligopeptides. J Pept Sci 2017; 23:104-116. [DOI: 10.1002/psc.2956] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 11/30/2016] [Accepted: 12/01/2016] [Indexed: 12/23/2022]
Affiliation(s)
- Mariano Venanzi
- Department of Chemical Sciences and Technologies and Centre for Nanoscience, Nanotechnology and Advanced Instrumentation; University of Rome ‘Tor Vergata’; 00133 Rome Italy
| | - Emanuela Gatto
- Department of Chemical Sciences and Technologies and Centre for Nanoscience, Nanotechnology and Advanced Instrumentation; University of Rome ‘Tor Vergata’; 00133 Rome Italy
| | - Fernando Formaggio
- ICB, Padova Unit, CNR, Department of Chemistry; University of Padova; 35131 Padova Italy
| | - Claudio Toniolo
- ICB, Padova Unit, CNR, Department of Chemistry; University of Padova; 35131 Padova Italy
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18
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Lettieri R, Di Giorgio F, Colella A, Magnusson R, Bjorefors F, Placidi E, Palleschi A, Venanzi M, Gatto E. DPPTE Thiolipid Self-Assembled Monolayer: A Critical Assay. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11560-11572. [PMID: 27689538 DOI: 10.1021/acs.langmuir.6b01912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Supported lipid membranes represent an elegant way to design a fluid interface able to mimic the physicochemical properties of biological membranes, with potential biotechnological applications. In this work, a diacyl phospholipid, the 1,2-dipalmitoyl-sn-glycero-3-phosphothioethanol (DPPTE), functionalized with a thiol group, was immobilized on a gold surface. In this molecule, the thiol group, responsible for the Au-S bond (45 kJ/mol) is located on the phospholipid polar head, letting the hydrophobic chain protrude from the film. This system is widely used in the literature but is no less challenging, since its characterization is not complete, as several discordant data have been obtained. In this work, the film was characterized by cyclic voltammetry blocking experiments, to verify the SAM formation, and by reductive desorption measurements, to estimate the molecular density of DPPTE on the gold surface. This value has been compared to that obtained by quartz crystal microbalance measurements. Ellipsometry and impedance spectroscopy measurements have been performed to obtain information about the monolayer thickness and capacitance. The film morphology was investigated by atomic force microscopy. Finally, Monte Carlo simulations were carried out, in order to gain molecular information about the morphologies of the DPPTE SAM and compare them to the experimental results. We demonstrate that DPPTE molecules, incubated 18 h below the phase transition temperature (T = 41.1 ± 0.4 °C) in ethanol solution, are able to form a self-assembled monolayer on the gold surface, with domain structures of different order, which have never been reported before. Our results make possible rationalization of the scattered results so far obtained on this system, giving a new insight into the formation of phospholipids SAMs on a gold surface.
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Affiliation(s)
- Raffaella Lettieri
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata , 00133 Rome, Italy
| | - Floriana Di Giorgio
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata , 00133 Rome, Italy
| | - Alessandra Colella
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata , 00133 Rome, Italy
| | - Roger Magnusson
- Department of Physics, Chemistry and Biology (IFM), University of Linköping , 581 83 Linköping, Sweden
| | - Fredrik Bjorefors
- Ångström Laboratory, Department of Chemistry, Uppsala University , Box 538, SE-75121 Uppsala, Sweden
| | - Ernesto Placidi
- Institute of Structure of Matter, CNR, Department of Physics, University of Rome Tor Vergata , 00133 Rome, Italy
| | - Antonio Palleschi
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata , 00133 Rome, Italy
| | - 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
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19
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Gong X, Branford-White C, Tao L, Li S, Quan J, Nie H, Zhu L. Preparation and characterization of a novel sodium alginate incorporated self-assembled Fmoc-FF composite hydrogel. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 58:478-86. [DOI: 10.1016/j.msec.2015.08.059] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 08/08/2015] [Accepted: 08/27/2015] [Indexed: 12/29/2022]
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20
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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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21
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22
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Handelman A, Shalev G, Rosenman G. Symmetry of Bioinspired Short Peptide Nanostructures and Their Basic Physical Properties. Isr J Chem 2015. [DOI: 10.1002/ijch.201400164] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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23
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Barman N, Hossen T, Mondal K, Sahu K. Modulation of ultrafast photoinduced electron transfer in H-bonding environment: PET from aniline to coumarin 153 in the presence of an inert co-solvent cyclohexane. Phys Chem Chem Phys 2015; 17:32556-63. [DOI: 10.1039/c5cp05929a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A passive component is found to boost H-bond assisted PET in a mixture using femtosecond fluorescence measurements and MD simulation.
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Affiliation(s)
- Nabajeet Barman
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781039
- India
| | - Tousif Hossen
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781039
- India
| | - Koushik Mondal
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781039
- India
| | - Kalyanasis Sahu
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781039
- India
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24
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Tarakeshwar P, Palma JL, Holland GP, Fromme P, Yarger JL, Mujica V. Probing the Nature of Charge Transfer at Nano-Bio Interfaces: Peptides on Metal Oxide Nanoparticles. J Phys Chem Lett 2014; 5:3555-3559. [PMID: 26278609 DOI: 10.1021/jz501854x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Characterizing the nano-bio interface has been a long-standing endeavor in the quest for novel biosensors, biophotovoltaics, and biocompatible electronic devices. In this context, the present computational work on the interaction of two peptides, A6K (Ac-AAAAAAK-NH2) and A7 (Ac-AAAAAAA-NH2) with semiconducting TiO2 nanoparticles is an effort to understand the peptide-metal oxide nanointerface. These investigations were spurred by recent experimental observations that nanostructured semiconducting metal oxides templated with A6K peptides not only stabilize large proteins like photosystem-I (PS-I) but also exhibit enhanced charge-transfer characteristics. Our results indicate that α-helical structures of A6K are not only energetically more stabilized on TiO2 nanoparticles, but the resulting hybrids also exhibit enhanced electron transfer characteristics. This enhancement can be attributed to substantial changes in the electronic characteristics at the peptide-TiO2 interface. Apart from understanding the mechanism of electron transfer (ET) in peptide-stabilized PS-I on metal oxide nanoparticles, the current work also has implications in the development of novel solar cells and photocatalysts.
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Affiliation(s)
- Pilarisetty Tarakeshwar
- †Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Julio L Palma
- ‡Center for Biosensors and Bioelectronics, Biodesign Institute, Arizona State University, Tempe, Arizona 85287-5001, United States
| | - Gregory P Holland
- §Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California 92182-1030, United States
| | - Petra Fromme
- †Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Jeffery L Yarger
- †Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Vladimiro Mujica
- †Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
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25
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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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26
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Handelman A, Natan A, Rosenman G. Structural and optical properties of short peptides: nanotubes-to-nanofibers phase transformation. J Pept Sci 2014; 20:487-93. [PMID: 24895323 DOI: 10.1002/psc.2661] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/26/2014] [Accepted: 05/06/2014] [Indexed: 01/22/2023]
Abstract
Thermally induced phase transformation in bioorganic nanotubes, which self-assembled from two ultrashort dipeptides of different origin, aromatic diphenylalanine (FF) and aliphatic dileucine (LL), is studied. In both FF and LL nanotubes, irreversible phase transformation found at 120-180 °C is governed by linear-to-cyclic dipeptide molecular modification followed by formation of extended β-sheet structure. As a result of this process, native open-end FF and LL nanotubes are transformed into ultrathin nanofibrils. Found deep reconstructions at all levels from macroscopic (morphology) and structural space symmetry to molecular give rise to new optical properties in both aromatic FF and aliphatic LL nanofibrils and generation of blue photoluminescence (PL) emission. It is shown that observed blue PL peak is similar in these supramolecular nanofibrillar structures and is excited by the network of non-covalent hydrogen bonds that link newly thermally induced neighboring cyclic dipeptide strands to final extended β-sheet structure of amyloid-like nanofibrils. The observed blue PL peak in short dipeptide nanofibrils is similar to the blue PL peak that was recently found in amyloid fibrils and can be considered as the optical signature of β-sheet structures. Nanotubular structures were characterized by environmental scanning electron microscope, ToF-secondary ion mass spectroscopy, CD and fluorescence spectroscopy.
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Affiliation(s)
- Amir Handelman
- School of Electrical Engineering-Physical Electronics, Faculty of Engineering, Tel Aviv University, Ramat Aviv, 69978, Tel Aviv, Israel
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27
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Ryoji-Noyori-Preis: B. M. Trost / F. A. Cotton Medal: B. M. Hoffman / Max-Bergmann-Medaille: C. Toniolo / Preise des Royal Australian Chemical Institute: M. Kelso, C. Jones, S. Perrier, M. J. Crossley und D. W. Lupton / International Solvay Chair für Chem. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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28
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Ryoji Noyori Prize: B. M. Trost / F. A. Cotton Medal: B. M. Hoffman / Max Bergmann Medal: C. Toniolo / Royal Australian Chemical Institute Awards: M. Kelso, C. Jones, S. Perrier, M. J. Crossley, and D. W. Lupton / 2013-2014 International Solvay Chair of C. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/anie.201400242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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