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Fu Q, Li X, Xu Y, Ma X, Wang Y, Long S, Liu X, Wang D. How Does Triclocarban Affect Sulfur Transformation in Anaerobic Systems? ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:17959-17969. [PMID: 39322606 DOI: 10.1021/acs.est.4c07825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
Triclocarban (TCC), as a typical antimicrobial agent, accumulates at substantial levels in natural environments and engineered systems. This work investigated the impact of TCC on anaerobic sulfur transformation, especially toxic H2S production. Experimental findings revealed that TCC facilitated sulfur flow from the sludge solid phase to liquid phase, promoted sulfate reduction and sulfur-containing amino acid degradation, and largely improved anaerobic H2S production, i.e., 50-600 mg/kg total suspended solids (TSS) TCC increased the cumulative H2S yields by 24.76-478.12%. Although TCC can be partially biodegraded in anaerobic systems, the increase in H2S production can be mainly attributed to the effect of TCC rather than its degradation products. TCC was spontaneously adsorbed by protein-like substances contained in microbe extracellular polymers (EPSs), and the adsorbed TCC increased the direct electron transfer ability of EPSs, possibly due to the increase in the content of electroactive polymer protein in EPSs, the polarization of the amide group C═O bond, and the increase of the α-helical peptide dipole moment, which might be one important reason for promoting sulfur bioconversion processes. Microbial analysis showed that the presence of TCC enriched the organic substrate-degrading bacteria and sulfate-reducing bacteria and increased the abundances of functional genes encoding sulfate transport and dissimilatory sulfate reduction.
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Affiliation(s)
- Qizi Fu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, P.R. China
| | - Xuemei Li
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, P.R. China
| | - Yunhao Xu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, P.R. China
| | - Xingyu Ma
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, P.R. China
| | - Yan Wang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, P.R. China
| | - Sha Long
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, P.R. China
| | - Xuran Liu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, P.R. China
| | - Dongbo Wang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, P.R. China
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2
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Li Y, Zhang HM. Calcined pyrite accelerates sulfur metabolic and electron transfer in driving targeted microbial fuel cell denitrification. BIORESOURCE TECHNOLOGY 2024; 410:131285. [PMID: 39151569 DOI: 10.1016/j.biortech.2024.131285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 08/09/2024] [Accepted: 08/14/2024] [Indexed: 08/19/2024]
Abstract
The sulfur powder as electron donor in driving dual-chamber microbial fuel cell denitrification (S) process has the advantages in economy and pollution-free to treat nitrate-contained groundwater. However, the low efficiency of electron utilization in sulfur oxidation (ACE) is the bottleneck to this method. In this study, the addition of calcined pyrite to the S system (SCP) accelerated electron generation and intra/extracellular transfer efficiency, thereby improving ACE and denitrification performance. The highest nitrate removal rate reached to 3.55 ± 0.01 mg N/L/h in SCP system, and the ACE was 103 % higher than that in S system. More importantly, calcined pyrite enhanced the enrichment of functional bacteria (Burkholderiales, Thiomonas and Sulfurovum) and functional genes which related to sulfur metabolism and electron transfer. This study was more effective in removing nitrate from groundwater without compromising the water quality.
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Affiliation(s)
- Yue Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, PR China
| | - Han-Min Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, PR China.
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3
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Wei YC, Hsu LY. Wide-Dynamic-Range Control of Quantum-Electrodynamic Electron Transfer Reactions in the Weak Coupling Regime. J Phys Chem Lett 2024; 15:7403-7410. [PMID: 38995883 DOI: 10.1021/acs.jpclett.4c01265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
Catalyzing reactions effectively by vacuum fluctuations of electromagnetic fields is a significant challenge within the realm of chemistry. As opposed to most studies based on vibrational strong coupling, we introduce an innovative catalytic mechanism driven by weakly coupled polaritonic fields. Through the amalgamation of macroscopic quantum electrodynamics (QED) principles with Marcus electron transfer (ET) theory, we predict that ET reaction rates can be precisely modulated across a wide dynamic range by controlling the size and structure of nanocavities. Compared to QED-driven radiative ET rates in free space, plasmonic cavities induce substantial rate enhancements spanning the range from 103- to 10-fold. By contrast, Fabry-Perot cavities engender rate suppression spanning the range from 10-2- to 10-1-fold. This work overcomes the necessity of using strong light-matter interactions in QED chemistry, opening up a new era of manipulating QED-based chemical reactions in a wide dynamic range.
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Affiliation(s)
- Yu-Chen Wei
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
- Department of Applied Physics and Science Education, Eindhoven University of Technology, 5600MB Eindhoven, The Netherlands
| | - Liang-Yan Hsu
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
- National Center for Theoretical Sciences, Taipei 106, Taiwan
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4
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Fu Q, Li C, Liu Z, Ma X, Xu Y, Wang Y, Liu X, Wang D. The Impact of Bisphenol A on the Anaerobic Sulfur Transformation: Promoting Sulfur Flow and Toxic H 2S Production. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:8043-8052. [PMID: 38648493 DOI: 10.1021/acs.est.4c00612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Bisphenol A (BPA), as a typical leachable additive from microplastics and one of the most productive bulk chemicals, is widely distributed in sediments, sewers, and wastewater treatment plants, where active sulfur cycling takes place. However, the effect of BPA on sulfur transformation, particularly toxic H2S production, has been previously overlooked. This work found that BPA at environmentally relevant levels (i.e., 50-200 mg/kg total suspended solids, TSS) promoted the release of soluble sulfur compounds and increased H2S gas production by 14.3-31.9%. The tryptophan-like proteins of microbe extracellular polymeric substances (EPSs) can spontaneously adsorb BPA, which is an enthalpy-driven reaction (ΔH = -513.5 kJ mol-1, ΔS = -1.60 kJ mol-1K -1, and ΔG = -19.52 kJ mol-1 at 35 °C). This binding changed the composition and structure of EPSs, which improved the direct electron transfer capacity of EPSs, thereby promoting the bioprocesses of organic sulfur hydrolysis and sulfate reduction. In addition, BPA presence enriched the functional microbes (e.g., Desulfovibrio and Desulfuromonas) responsible for organic sulfur mineralization and inorganic sulfate reduction and increased the abundance of related genes involved in ATP-binding cassette transporters and sulfur metabolism (e.g., Sat and AspB), which promoted anaerobic sulfur transformation. This work deepens our understanding of the interaction between BPA and sulfur transformation occurring in anaerobic environments.
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Affiliation(s)
- Qizi Fu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Chenxi Li
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Zirui Liu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Xingyu Ma
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Yunhao Xu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Yan Wang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Xuran Liu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Dongbo Wang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
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5
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Yang MY, O’Mari O, Goddard WA, Vullev VI. How Permanent Are the Permanent Macrodipoles of Anthranilamide Bioinspired Molecular Electrets? J Am Chem Soc 2024; 146:5162-5172. [PMID: 38226894 PMCID: PMC10916682 DOI: 10.1021/jacs.3c10525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 12/12/2023] [Accepted: 12/15/2023] [Indexed: 01/17/2024]
Abstract
Dipoles are ubiquitous, and their impacts on materials and interfaces affect many aspects of daily life. Despite their importance, dipoles remain underutilized, often because of insufficient knowledge about the structures producing them. As electrostatic analogues of magnets, electrets possess ordered electric dipoles. Here, we characterize the structural dynamics of bioinspired electret oligomers based on anthranilamide motifs. We report dynamics simulations, employing a force field that allows dynamic polarization, in a variety of solvents. The results show a linear increase in macrodipoles with oligomer length that strongly depends on solvent polarity and hydrogen-bonding (HB) propensity, as well as on the anthranilamide side chains. An increase in solvent polarity increases the dipole moments of the electret structures while decreasing the dipole effects on the moieties outside the solvation cavities. The former is due to enhancement of the Onsager reaction field and the latter to screening of the dipole-generated fields. Solvent dynamics hugely contributes to the fluctuations and magnitude of the electret dipoles. HB with the solvent weakens electret macrodipoles without breaking the intramolecular HB that maintains their extended conformation. This study provides design principles for developing a new class of organic materials with controllable electronic properties. An animated version of the TOC graphic showing a sequence of the MD trajectories of short and long molecular electrets in three solvents with different polarities is available in the HTML version of this paper.
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Affiliation(s)
- Moon Young Yang
- Materials
and Process Simulation Center, California
Institute of Technology, Pasadena, California 91125, United States
| | - Omar O’Mari
- Department
of Bioengineering, University of California, Riverside, California 92521, United States
| | - William A. Goddard
- Materials
and Process Simulation Center, California
Institute of Technology, Pasadena, California 91125, United States
| | - Valentine I. Vullev
- Department
of Bioengineering, University of California, Riverside, California 92521, United States
- Department
of Chemistry, University of California, Riverside, California 92521, United States
- Department
of Biochemistry, University of California, Riverside, California 92521, United States
- Materials
Science and Engineering Program, University
of California, Riverside, California 92521, United States
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6
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Jiang Z, Yu Q, Zhao Z, Song X, Zhang Y. Reason for the increased electroactivity of extracellular polymeric substances with electrical stimulation: Structural change of α-helix peptide of protein. WATER RESEARCH 2023; 238:119995. [PMID: 37156101 DOI: 10.1016/j.watres.2023.119995] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/05/2023] [Accepted: 04/23/2023] [Indexed: 05/10/2023]
Abstract
Electroactivity is an important parameter to assess the ability of the extracellular polymeric substance (EPS) of microorganisms to participate in extracellular respiration. Many reports have found that the electroactivity of microbial sludge could be enhanced with electrical stimulation, but the reason remains unclear. The results of this study showed that the current generation of the three microbial electrolysis cells increased by 1.27-1.76 times during 49 days of electrical stimulation, but the typical electroactive microorganisms were not enriched. Meanwhile, the capacitance and conductivity of EPS of sludge after the electrical stimulation increased by 1.32-1.83 times and 1.27-1.32 times, respectively. In-situ FTIR analysis indicated that the electrical stimulation could lead to the polarization of amide groups in the protein, likely affecting the protein structure related to the electroactivity. Accordingly, the dipole moment of the α-helix peptide of protein of sludge increased from 220 D to 280 D after the electrical stimulation, which was conducive to electron transfer in the α-helix peptide. Moreover, the vertical ionization potential and ELUMO-EHOMO energy gap of the C-terminal in the α-helix peptide decreased from 4.43 eV to 4.10 eV and 0.41 eV to 0.24 eV, respectively, which indicated that the α-helix was easier to serve as the electron transfer site of electron hopping. These results meant that the enhancement of the dipole moment of the α-helix peptide unchoked the electron transfer chain of the protein, which was the main reason for the increased electroactivity of EPS protein.
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Affiliation(s)
- Zhihao Jiang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Qilin Yu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhiqiang Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Xingyuan Song
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yaobin Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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7
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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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8
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Chen L, Li X, Xie Y, Liu N, Qin X, Chen X, Bu Y. Modulation of proton-coupled electron transfer reactions in lysine-containing alpha-helixes: alpha-helixes promoting long-range electron transfer. Phys Chem Chem Phys 2022; 24:14592-14602. [PMID: 35667661 DOI: 10.1039/d2cp00666a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The proton-coupled electron transfer (PCET) reaction plays an important role in promoting many biological and chemical reactions. Usually, the rate of the PCET reaction increases with an increase in the electron transfer distance because long-range electron transfer requires more free energy barriers. Our density functional theory calculations here reveal that the mechanism of PCET occurring in lysine-containing alpha(α)-helixes changes with an increasing number of residues in the α-helical structure and the different conformations because of the modulation of the excess electron distribution by the α-helical structures. The rate constants of the corresponding PCET reactions are independent of or substantially shallower dependent on the electron transfer distances along α-helixes. This counter-intuitive behavior can be attributed to the fact that the formation of larger macro-cylindrical dipole moments in longer helixes can promote electron transfer along the α-helix with a low energy barrier. These findings may be useful to gain insights into long-range electron transfer in proteins and design α-helix-based electronics via the regulation of short-range proton transfer.
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Affiliation(s)
- Long Chen
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China.
| | - Xin Li
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China.
| | - Yuxin Xie
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China.
| | - Nian Liu
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China.
| | - Xin Qin
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China.
| | - Xiaohua Chen
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China.
| | - Yuxiang Bu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong, 250100, P. R. China.
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9
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Rybicka-Jasińska K, Derr JB, Vullev VI. What defines biomimetic and bioinspired science and engineering? PURE APPL CHEM 2021. [DOI: 10.1515/pac-2021-0323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Abstract
Biomimicry, biomimesis and bioinspiration define distinctly different approaches for deepening the understanding of how living systems work and employing this knowledge to meet pressing demands in engineering. Biomimicry involves shear imitation of biological structures that most often do not reproduce the functionality that they have while in the living organisms. Biomimesis aims at reproduction of biological structure-function relationships and advances our knowledge of how different components of complex living systems work. Bioinspiration employs this knowledge in abiotic manners that are optimal for targeted applications. This article introduces and reviews these concepts in a global historic perspective. Representative examples from charge-transfer science and solar-energy engineering illustrate the evolution from biomimetic to bioinspired approaches and show their importance. Bioinspired molecular electrets, aiming at exploration of dipole effects on charge transfer, demonstrate the pintail impacts of biological inspiration that reach beyond its high utilitarian values. The abiotic character of bioinspiration opens doors for the emergence of unprecedented properties and phenomena, beyond what nature can offer.
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Affiliation(s)
| | - James B. Derr
- Department of Biochemistry , University of California , Riverside , CA , 92521 , USA
| | - Valentine I. Vullev
- Department of Biochemistry , University of California , Riverside , CA , 92521 , USA
- Department of Bioengineering , University of California , Riverside , CA , 92521 , USA
- Department of Chemistry , University of California , Riverside , CA , 92521 , USA
- Materials Science and Engineering Program , University of California , Riverside , CA , 92521 , USA
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10
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Derr JB, Rybicka-Jasińska K, Espinoza EM, Morales M, Billones MK, Clark JA, Vullev VI. On the Search of a Silver Bullet for the Preparation of Bioinspired Molecular Electrets with Propensity to Transfer Holes at High Potentials. Biomolecules 2021; 11:429. [PMID: 33804209 PMCID: PMC8001849 DOI: 10.3390/biom11030429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/01/2021] [Accepted: 03/07/2021] [Indexed: 01/24/2023] Open
Abstract
Biological structure-function relationships offer incomparable paradigms for charge-transfer (CT) science and its implementation in solar-energy engineering, organic electronics, and photonics. Electrets are systems with co-directionally oriented electric dopes with immense importance for CT science, and bioinspired molecular electrets are polyamides of anthranilic-acid derivatives with designs originating from natural biomolecular motifs. This publication focuses on the synthesis of molecular electrets with ether substituents. As important as ether electret residues are for transferring holes under relatively high potentials, the synthesis of their precursors presents formidable challenges. Each residue in the molecular electrets is introduced as its 2-nitrobenzoic acid (NBA) derivative. Hence, robust and scalable synthesis of ether derivatives of NBA is essential for making such hole-transfer molecular electrets. Purdie-Irvine alkylation, using silver oxide, produces with 90% yield the esters of the NBA building block for iso-butyl ether electrets. It warrants additional ester hydrolysis for obtaining the desired NBA precursor. Conversely, Williamson etherification selectively produces the same free-acid ether derivative in one-pot reaction, but a 40% yield. The high yields of Purdie-Irvine alkylation and the selectivity of the Williamson etherification provide important guidelines for synthesizing building blocks for bioinspired molecular electrets and a wide range of other complex ether conjugates.
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Affiliation(s)
- James Bennett Derr
- Department of Biochemistry, University of California, Riverside, CA 92521, USA;
| | | | - Eli Misael Espinoza
- Department of Chemistry, University of California, Riverside, CA 92521, USA; (E.M.E.); (M.M.)
| | - Maryann Morales
- Department of Chemistry, University of California, Riverside, CA 92521, USA; (E.M.E.); (M.M.)
| | | | - John Anthony Clark
- Department of Bioengineering, University of California, Riverside, CA 92521, USA; (K.R.-J.); (J.A.C.)
| | - Valentine Ivanov Vullev
- Department of Biochemistry, University of California, Riverside, CA 92521, USA;
- Department of Bioengineering, University of California, Riverside, CA 92521, USA; (K.R.-J.); (J.A.C.)
- Department of Chemistry, University of California, Riverside, CA 92521, USA; (E.M.E.); (M.M.)
- Department of Materials Science and Engineering Program, University of California, Riverside, CA 92521, USA
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11
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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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12
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Derr JB, Tamayo J, Clark JA, Morales M, Mayther MF, Espinoza EM, Rybicka-Jasińska K, Vullev VI. Multifaceted aspects of charge transfer. Phys Chem Chem Phys 2020; 22:21583-21629. [PMID: 32785306 PMCID: PMC7544685 DOI: 10.1039/d0cp01556c] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Charge transfer and charge transport are by far among the most important processes for sustaining life on Earth and for making our modern ways of living possible. Involving multiple electron-transfer steps, photosynthesis and cellular respiration have been principally responsible for managing the energy flow in the biosphere of our planet since the Great Oxygen Event. It is impossible to imagine living organisms without charge transport mediated by ion channels, or electron and proton transfer mediated by redox enzymes. Concurrently, transfer and transport of electrons and holes drive the functionalities of electronic and photonic devices that are intricate for our lives. While fueling advances in engineering, charge-transfer science has established itself as an important independent field, originating from physical chemistry and chemical physics, focusing on paradigms from biology, and gaining momentum from solar-energy research. Here, we review the fundamental concepts of charge transfer, and outline its core role in a broad range of unrelated fields, such as medicine, environmental science, catalysis, electronics and photonics. The ubiquitous nature of dipoles, for example, sets demands on deepening the understanding of how localized electric fields affect charge transfer. Charge-transfer electrets, thus, prove important for advancing the field and for interfacing fundamental science with engineering. Synergy between the vastly different aspects of charge-transfer science sets the stage for the broad global impacts that the advances in this field have.
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Affiliation(s)
- James B Derr
- Department of Biochemistry, University of California, Riverside, CA 92521, USA.
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13
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Molecular electrets – Why do dipoles matter for charge transfer and excited-state dynamics? J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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14
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Li P, Soudackov AV, Koronkiewicz B, Mayer JM, Hammes-Schiffer S. Theoretical Study of Shallow Distance Dependence of Proton-Coupled Electron Transfer in Oligoproline Peptides. J Am Chem Soc 2020; 142:13795-13804. [PMID: 32664731 DOI: 10.1021/jacs.0c04716] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Long-range electron transfer is coupled to proton transfer in a wide range of chemically and biologically important processes. Recently the proton-coupled electron transfer (PCET) rate constants for a series of biomimetic oligoproline peptides linking Ru(bpy)32+ to tyrosine were shown to exhibit a substantially shallower dependence on the number of proline spacers compared to the analogous electron transfer (ET) systems. The experiments implicated a concerted PCET mechanism involving intramolecular electron transfer from tyrosine to Ru(bpy)33+ and proton transfer from tyrosine to a hydrogen phosphate dianion. Herein these PCET systems, as well as the analogous ET systems, are studied with microsecond molecular dynamics, and the ET and PCET rate constants are calculated with the corresponding nonadiabatic theories. The molecular dynamics simulations illustrate that smaller ET donor-acceptor distances are sampled by the PCET systems than by the analogous ET systems. The shallower dependence of the PCET rate constant on the ET donor-acceptor distance is explained in terms of an additional positive, distance-dependent electrostatic term in the PCET driving force, which attenuates the rate constant at smaller distances. This electrostatic term depends on the change in the electrostatic interaction between the charges on each end of the bridge and can be modified by altering these charges. On the basis of these insights, this theory predicted a less shallow distance dependence of the PCET rate constant when imidazole rather than hydrogen phosphate serves as the proton acceptor, even though their pKa values are similar. This theoretical prediction was subsequently validated experimentally, illustrating that long-range electron transfer processes can be tuned by modifying the nature of the proton acceptor in concerted PCET processes. This level of control has broad implications for the design of more effective charge-transfer systems.
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Affiliation(s)
- Pengfei Li
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Alexander V Soudackov
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Brian Koronkiewicz
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - James M Mayer
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Sharon Hammes-Schiffer
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
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15
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Koronkiewicz B, Swierk J, Regan K, Mayer JM. Shallow Distance Dependence for Proton-Coupled Tyrosine Oxidation in Oligoproline Peptides. J Am Chem Soc 2020; 142:12106-12118. [PMID: 32510937 PMCID: PMC7545454 DOI: 10.1021/jacs.0c01429] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We have explored the kinetic effect of increasing electron transfer (ET) distance in a biomimetic, proton-coupled electron-transfer (PCET) system. Biological ET often occurs simultaneously with proton transfer (PT) in order to avoid the high-energy, charged intermediates resulting from the stepwise transfer of protons and electrons. These concerted proton-electron-transfer (CPET) reactions are implicated in numerous biological ET pathways. In many cases, PT is coupled to long-range ET. While many studies have shown that the rate of ET is sensitive to the distance between the electron donor and acceptor, extensions to biological CPET reactions are sparse. The possibility of a unique ET distance dependence for CPET reactions deserves further exploration, as this could have implications for how we understand biological ET. We therefore explored the ET distance dependence for the CPET oxidation of tyrosine in a model system. We prepared a series of metallopeptides with a tyrosine separated from a Ru(bpy)32+ complex by an oligoproline bridge of increasing length. Rate constants for intramolecular tyrosine oxidation were measured using the flash-quench transient absorption technique in aqueous solutions. The rate constants for tyrosine oxidation decreased by 125-fold with three added proline residues between tyrosine and the oxidant. By comparison, related intramolecular ET rate constants in very similar constructs were reported to decrease by 4-5 orders of magnitude over the same number of prolines. The observed shallow distance dependence for tyrosine oxidation is proposed to originate in part from the requirement for stronger oxidants, leading to a smaller hole-transfer effective tunneling barrier height. The shallow distance dependence observed here and extensions to distance-dependent CPET reactions have potential implications for long-range charge transfers.
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Affiliation(s)
- Brian Koronkiewicz
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - John Swierk
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Kevin Regan
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - James M Mayer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
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16
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Zuliani C, Formaggio F, Scipionato L, Toniolo C, Antonello S, Maran F. Insights into the Distance Dependence of Electron Transfer through Conformationally Constrained Peptides. ChemElectroChem 2020. [DOI: 10.1002/celc.202000088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Claudio Zuliani
- Department of ChemistryUniversity of Padova 1, Via Marzolo 35131 Padova Italy
- Ozo Innovations Ltd, Unit 29 Chancerygate Business Centre Langford Ln Kidlington OX5 1FQ UK
| | - Fernando Formaggio
- Department of ChemistryUniversity of Padova 1, Via Marzolo 35131 Padova Italy
| | - Laura Scipionato
- Department of ChemistryUniversity of Padova 1, Via Marzolo 35131 Padova Italy
| | - Claudio Toniolo
- Department of ChemistryUniversity of Padova 1, Via Marzolo 35131 Padova Italy
| | - Sabrina Antonello
- Department of ChemistryUniversity of Padova 1, Via Marzolo 35131 Padova Italy
| | - Flavio Maran
- Department of ChemistryUniversity of Padova 1, Via Marzolo 35131 Padova Italy
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17
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Skonieczny K, Espinoza EM, Derr JB, Morales M, Clinton JM, Xia B, Vullev VI. Biomimetic and bioinspired molecular electrets. How to make them and why does the established peptide chemistry not always work? PURE APPL CHEM 2020. [DOI: 10.1515/pac-2019-0111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract“Biomimetic” and “bioinspired” define different aspects of the impacts that biology exerts on science and engineering. Biomimicking improves the understanding of how living systems work, and builds tools for bioinspired endeavors. Biological inspiration takes ideas from biology and implements them in unorthodox manners, exceeding what nature offers. Molecular electrets, i.e. systems with ordered electric dipoles, are key for advancing charge-transfer (CT) science and engineering. Protein helices and their biomimetic analogues, based on synthetic polypeptides, are the best-known molecular electrets. The inability of native polypeptide backbones to efficiently mediate long-range CT, however, limits their utility. Bioinspired molecular electrets based on anthranilamides can overcome the limitations of their biological and biomimetic counterparts. Polypeptide helices are easy to synthesize using established automated protocols. These protocols, however, fail to produce even short anthranilamide oligomers. For making anthranilamides, the residues are introduced as their nitrobenzoic-acid derivatives, and the oligomers are built from their C- to their N-termini via amide-coupling and nitro-reduction steps. The stringent requirements for these reduction and coupling steps pose non-trivial challenges, such as high selectivity, quantitative yields, and fast completion under mild conditions. Addressing these challenges will provide access to bioinspired molecular electrets essential for organic electronics and energy conversion.
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Affiliation(s)
- Kamil Skonieczny
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Eli M. Espinoza
- Department of Chemistry, University of California, Riverside, CA 92521, USA
| | - James B. Derr
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
| | - Maryann Morales
- Department of Chemistry, University of California, Riverside, CA 92521, USA
| | - Jillian M. Clinton
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
| | - Bing Xia
- GlaxoSmithKline, 200 Cambridgepark Dr., Cambridge, MA 02140, USA
| | - Valentine I. Vullev
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
- Department of Chemistry, University of California, Riverside, CA 92521, USA
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
- Materials Science and Engineering Program, University of California, Riverside, CA 92521, USA
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18
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Chen Y, Viereck J, Harmer R, Rangan S, Bartynski RA, Galoppini E. Helical Peptides Design for Molecular Dipoles Functionalization of Wide Band Gap Oxides. J Am Chem Soc 2020; 142:3489-3498. [PMID: 31977205 DOI: 10.1021/jacs.9b12001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The use of helical hexapeptides to establish a surface dipole layer on a TiO2 substrate, with the goal of influencing the energy levels of a coadsorbed chromophore, is explored. Two helical hexapeptides, synthesized from 2-amino isobutyric acid (Aib) residues, were protected at the N-terminus with a carboxybenzyl group (Z) and at the C-terminus carried either a carboxylic acid or an isophthalic acid (Ipa) anchor group to form Z-(Aib)6-COOH or Z-(Aib)6-Ipa, respectively. Using a combination of vibrational and photoemission spectroscopies, bonding of the two peptides to TiO2 surfaces (either nanostructured or single-crystal TiO2(110)) was found to be highly dependent on the anchor group, with Ipa establishing a monolayer much more efficiently than COOH. Furthermore, a monolayer of Z-(Aib)6-Ipa on TiO2(110) was exposed for different binding times to a solution of a zinc tetraphenylporphyrin (ZnTPP) derivative terminated with an Ipa anchor group (ZnTPP-P-Ipa). Photoemission spectroscopy revealed that ZnTPP-P-Ipa partly displaced Z-(Aib)6-Ipa, forming a coadsorbed monolayer on the oxide surface. The presence of the peptide molecular dipole shifted the HOMO levels of the ZnTPP group to lower energy by ∼300 meV, in accordance with a simple parallel plate capacitor model. These results suggest that a mixed-layer approach, involving coadsorption of a strong molecular dipole compound with a chromophore, is a versatile method to shift the energy levels of such chromophores with respect to the band edges of the substrate.
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Affiliation(s)
- Yuan Chen
- Chemistry Department , Rutgers University , 73 Warren Street , Newark , New Jersey 07102 , United States
| | - Jonathan Viereck
- Department of Physics and Astronomy and Laboratory for Surface Modification , Rutgers University , 136 Frelinghuysen Road , Piscataway , New Jersey 08854 , United States
| | - Ryan Harmer
- Chemistry Department , Rutgers University , 73 Warren Street , Newark , New Jersey 07102 , United States
| | - Sylvie Rangan
- Department of Physics and Astronomy and Laboratory for Surface Modification , Rutgers University , 136 Frelinghuysen Road , Piscataway , New Jersey 08854 , United States
| | - Robert A Bartynski
- Department of Physics and Astronomy and Laboratory for Surface Modification , Rutgers University , 136 Frelinghuysen Road , Piscataway , New Jersey 08854 , United States
| | - Elena Galoppini
- Chemistry Department , Rutgers University , 73 Warren Street , Newark , New Jersey 07102 , United States
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19
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Li B, Tian L, He X, Ji X, Khalid H, Yue C, Liu Q, Yu X, Lei S, Hu W. Tunable oligo-histidine self-assembled monolayer junction and charge transport by a pH modulated assembly. Phys Chem Chem Phys 2019; 21:26058-26065. [PMID: 31746863 DOI: 10.1039/c9cp04695j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Histidine works as an important mediator in the charge transport process through proteins via its conjugate side group. It can also stabilize a peptide's secondary structure through hydrogen bonding of the imidazole group. In this study, the conformation of the self-assembled monolayer (SAM) and the charge transport of the tailor-made oligopeptide hepta-histidine derivative (7-His) were modulated through the pH control of the assembly environment. Histidine is found to be an efficient tunneling mediator in monolayer junctions with an attenuation factor of β = ∼0.5 Å-1. Successful theoretical model fitting indicates a linear increase in the number of tunneling sites as the 7-His SAM thickness increases, following the deprotonation of histidine. Combined with the ultraviolet photoelectron spectroscopy (UPS) measurements, a modulable charge transport pathway through 7-His with imidazole groups of histidine as tunneling foot stones is revealed. Histidine therefore possesses a large potential for modulable functional (bio)electronic devices.
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Affiliation(s)
- Baili Li
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, School of Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China.
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20
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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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21
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Schosser WM, Zotti LA, Cuevas JC, Pauly F. Doping hepta-alanine with tryptophan: A theoretical study of its effect on the electrical conductance of peptide-based single-molecule junctions. J Chem Phys 2019; 150:174705. [PMID: 31067872 DOI: 10.1063/1.5090457] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Motivated by a recent experiment [C. Guo et al., Proc. Natl. Acad. Sci. U. S. A. 113, 10785 (2016)], we carry out a theoretical study of electron transport through peptide-based single-molecule junctions. We analyze the pristine hepta-alanine and its functionalizations with a single tryptophan unit, which is placed in three different locations along the backbone. Contrary to expectations from the experiment on self-assembled monolayers, we find that insertion of tryptophan does not raise the electrical conductance and that the resulting peptides instead remain insulating in the framework of a coherent transport picture. The poor performance of these molecules as conductors can be ascribed to the strongly off-resonant transport and low electrode-molecule coupling of the frontier orbitals. Although the introduction of tryptophan increases the energy of the highest occupied molecular orbital (HOMO) of the peptides in the gas phase, the new HOMO states are localized on the tryptophan unit and therefore essentially do not contribute to coherent charge transport.
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Affiliation(s)
- Werner M Schosser
- Department of Physics, University of Konstanz, 78457 Konstanz, Germany
| | - Linda A Zotti
- Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Juan Carlos Cuevas
- Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Fabian Pauly
- Department of Physics, University of Konstanz, 78457 Konstanz, Germany
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22
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Song X, Zhang F, Bu Y. Dynamic relaying properties of a β-turn peptide in long-range electron transfer. J Comput Chem 2019; 40:988-996. [PMID: 30451309 DOI: 10.1002/jcc.25541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/30/2018] [Accepted: 07/03/2018] [Indexed: 11/05/2022]
Abstract
The relay stations play a significant role in long-range charge hopping transfer in proteins. Although studies have clarified that many more protein structural motifs can function as relays in charge hopping transfers by acting as intermediate charge carriers, the relaying properties are still poorly understood. In this work, taking a β-turn oligopeptide as an example, we report a dynamic character of a relay with tunable relaying properties using the density functional theory calculations. Our main finding is that a β-turn peptide can serve as an effective electron relay in facilitating long-range electron migration and its relay properties is vibration-tunable. The vibration-induced structural transient distortions remarkably affect the lowest occupied molecular orbital (LUMO) energy, vertical electron affinity and electron-binding mode of the β-turn oligopeptide and the singly occupied molecular orbital (SOMO) energy of the corresponding electron adduct and thus the relaying properties. Different vibration modes lead to different structural distortions and thus have different effects on the relaying properties and ability of the β-turn peptide. For the relaying properties, there approximately is a linear negative correlation of electron affinity with the LUMO energy of the β-turn or the SOMO energy of its electron adduct. Besides, such relaying properties also vary in the vibration evolution process, and the electron-binding modes may be tunable. As an important addition to the known static charge relaying properties occurring in various protein structural motifs, this work reports the dynamic electron-relaying characteristics of a β-turn oligopeptide with variable relaying properties governed by molecular vibrations which can be applied to different proteins in mediating long-range charge transfers. Clearly, this work reveals molecular vibration effects on the electron relaying properties of protein structural motifs and provides new insights into the dynamics of long-range charge transfers in proteins. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Xiufang Song
- School of Chemistry &Chemical Engineering, Institute of Theoretical Chemistry, Shandong University, Jinan 250100, People's Republic of China
| | - Fengying Zhang
- School of Chemistry &Chemical Engineering, Institute of Theoretical Chemistry, Shandong University, Jinan 250100, People's Republic of China
| | - Yuxiang Bu
- School of Chemistry &Chemical Engineering, Institute of Theoretical Chemistry, Shandong University, Jinan 250100, People's Republic of China
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23
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Hou S, Wu Q, Sadeghi H, Lambert CJ. Thermoelectric properties of oligoglycine molecular wires. NANOSCALE 2019; 11:3567-3573. [PMID: 30632577 DOI: 10.1039/c8nr08878k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We have investigated the electrical and thermoelectrical properties of glycine chains with and without cysteine terminal groups. The electrical conductance of (Gly)n, (Gly)nCys and Cys(Gly)nCys molecules (where Gly, Cys represent glycine and cysteine and n = 1-3) was found to decay exponentially with length l as e-βl. Our results show that connecting the molecules to gold electrodes via the sulphur atom of the cysteine moiety leads to higher β factors of 1.57 Å-1 and 1.22 Å-1 for (Gly)nCys and Cys(Gly)nCys respectively, while β = 0.92 Å-1 for (Gly)n. We also find that replacing the peptide bond with a methylene group (-CH2-) increases the conductance of (Gly)3Cys. Furthermore, we find the (Gly)1Cys and Cys(Gly)1Cys systems show good thermoelectrical performance, because of their high Seebeck coefficients (∼0.2 mV K-1) induced by the sulphur of the cysteine(s). With the contributions of both electrons and phonons taken into consideration, a high figure of merit ZT = 0.8 is obtained for (Gly)1Cys at room temperature, which increases further with increasing temperature, suggesting that peptide-based SAM junctions are promising candidates for thermoelectric energy harvesting.
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Affiliation(s)
- Songjun Hou
- Quantum Technology Centre, Department of Physics, Lancaster University, LA1 4YB Lancaster, UK.
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24
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Espinoza EM, Clark JA, Derr JB, Bao D, Georgieva B, Quina FH, Vullev VI. How Do Amides Affect the Electronic Properties of Pyrene? ACS OMEGA 2018; 3:12857-12867. [PMID: 31458010 PMCID: PMC6644773 DOI: 10.1021/acsomega.8b01581] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 09/24/2018] [Indexed: 05/12/2023]
Abstract
The electronic properties of amide linkers, which are intricate components of biomolecules, offer a wealth of unexplored possibilities. Herein, we demonstrate how the different modes of attaching an amide to a pyrene chromophore affect the electrochemical and optical properties of the chromophore. Thus, although they cause minimal spectral shifts, amide substituents can improve either the electron-accepting or electron-donating capabilities of pyrene. Specifically, inversion of the amide orientation shifts the reduction potentials by 200 mV. These trends indicate that, although amides affect to a similar extent the energies of the ground and singlet excited states of pyrene, the effects on the doublet states of its radical ions are distinctly different. This behavior reflects the unusually strong orientation dependence of the resonance effects of amide substituents, which should extend to amide substituents on other types of chromophores in general. These results represent an example where the Hammett sigma constants fail to predict substituent effects on electrochemical properties. On the other hand, Swain-Lupton parameters are found to be in good agreement with the observed trends. Examination of the frontier orbitals of the pyrene derivatives and their components reveals the underlying reason for the observed amide effects on the electronic properties of this polycyclic aromatic hydrocarbon and points to key molecular-design strategies for electronic and energy-conversion systems.
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Affiliation(s)
- Eli M. Espinoza
- Department
of Chemistry, Department of Bioengineering, Department of Biochemistry, and Materials Science
and Engineering Program, University of California, Riverside, California 92521, United States
- Instituto
de Química, Universidade de São
Paulo, Avenida Lineu
Prestes 748, Cidade Universitária, São
Paulo 05508-000, Brazil
| | - John A. Clark
- Department
of Chemistry, Department of Bioengineering, Department of Biochemistry, and Materials Science
and Engineering Program, University of California, Riverside, California 92521, United States
| | - James B. Derr
- Department
of Chemistry, Department of Bioengineering, Department of Biochemistry, and Materials Science
and Engineering Program, University of California, Riverside, California 92521, United States
| | - Duoduo Bao
- Department
of Chemistry, Department of Bioengineering, Department of Biochemistry, and Materials Science
and Engineering Program, University of California, Riverside, California 92521, United States
| | - Boriana Georgieva
- Department
of Chemistry, Department of Bioengineering, Department of Biochemistry, and Materials Science
and Engineering Program, University of California, Riverside, California 92521, United States
| | - Frank H. Quina
- Instituto
de Química, Universidade de São
Paulo, Avenida Lineu
Prestes 748, Cidade Universitária, São
Paulo 05508-000, Brazil
- E-mail: (F.H.Q.)
| | - Valentine I. Vullev
- Department
of Chemistry, Department of Bioengineering, Department of Biochemistry, and Materials Science
and Engineering Program, University of California, Riverside, California 92521, United States
- E-mail: (V.I.V.)
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25
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Ing NL, El-Naggar MY, Hochbaum AI. Going the Distance: Long-Range Conductivity in Protein and Peptide Bioelectronic Materials. J Phys Chem B 2018; 122:10403-10423. [DOI: 10.1021/acs.jpcb.8b07431] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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26
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Derr JB, Tamayo J, Espinoza EM, Clark JA, Vullev VI. Dipole-induced effects on charge transfer and charge transport. Why do molecular electrets matter? CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0389] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Charge transfer (CT) and charge transport (CTr) are at the core of life-sustaining biological processes and of processes that govern the performance of electronic and energy-conversion devices. Electric fields are invaluable for guiding charge movement. Therefore, as electrostatic analogues of magnets, electrets have unexplored potential for generating local electric fields for accelerating desired CT processes and suppressing undesired ones. The notion about dipole-generated local fields affecting CT has evolved since the middle of the 20th century. In the 1990s, the first reports demonstrating the dipole effects on the kinetics of long-range electron transfer appeared. Concurrently, the development of molecular-level designs of electric junctions has led the exploration of dipole effects on CTr. Biomimetic molecular electrets such as polypeptide helices are often the dipole sources in CT systems. Conversely, surface-charge electrets and self-assembled monolayers of small polar conjugates are the preferred sources for modifying interfacial electric fields for controlling CTr. The multifaceted complexity of such effects on CT and CTr testifies for the challenges and the wealth of this field that still remains largely unexplored. This review outlines the basic concepts about dipole effects on CT and CTr, discusses their evolution, and provides accounts for their future developments and impacts.
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Affiliation(s)
- James B. Derr
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
| | - Jesse Tamayo
- Department of Chemistry, University of California, Riverside, CA 92521, USA
| | - Eli M. Espinoza
- Department of Chemistry, University of California, Riverside, CA 92521, USA
| | - John A. Clark
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
| | - Valentine I. Vullev
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
- Department of Chemistry, University of California, Riverside, CA 92521, USA
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
- Materials Science and Engineering Program, University of California, Riverside, CA 92521, USA
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27
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Krzeszewski M, Espinoza EM, Červinka C, Derr JB, Clark JA, Borchardt D, Beran GJO, Gryko DT, Vullev VI. Dipole Effects on Electron Transfer are Enormous. Angew Chem Int Ed Engl 2018; 57:12365-12369. [PMID: 29740926 DOI: 10.1002/anie.201802637] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Indexed: 11/11/2022]
Abstract
Molecular dipoles present important, but underutilized, methods for guiding electron transfer (ET) processes. While dipoles generate fields of Gigavolts per meter in their vicinity, reported differences between rates of ET along versus against dipoles are often small or undetectable. Herein we show unprecedentedly large dipole effects on ET. Depending on their orientation, dipoles either ensure picosecond ET, or turn ET completely off. Furthermore, favorable dipole orientation makes ET possible even in lipophilic medium, which appears counterintuitive for non-charged donor-acceptor systems. Our analysis reveals that dipoles can substantially alter the ET driving force for low solvent polarity, which accounts for these unique trends. This discovery opens doors for guiding forward ET processes while suppressing undesired backward electron transduction, which is one of the holy grails of photophysics and energy science.
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Affiliation(s)
- Maciej Krzeszewski
- Department of Bioengineering, University of California, Riverside, Riverside, CA, 92521, USA.,Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland.,Present address: Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Eli M Espinoza
- Department of Chemistry, University of California, Riverside, Riverside, CA, 92521, USA
| | - Ctirad Červinka
- Department of Chemistry, University of California, Riverside, Riverside, CA, 92521, USA.,Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 166 28, Prague 6-Dejvice, Czech Republic
| | - James B Derr
- Department of Biochemistry, University of California, Riverside, Riverside, CA, 92521, USA
| | - John A Clark
- Department of Bioengineering, University of California, Riverside, Riverside, CA, 92521, USA
| | - Dan Borchardt
- Department of Chemistry, University of California, Riverside, Riverside, CA, 92521, USA
| | - Gregory J O Beran
- Department of Chemistry, University of California, Riverside, Riverside, CA, 92521, USA
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland
| | - Valentine I Vullev
- Department of Bioengineering, University of California, Riverside, Riverside, CA, 92521, USA.,Department of Chemistry, University of California, Riverside, Riverside, CA, 92521, USA.,Department of Biochemistry, University of California, Riverside, Riverside, CA, 92521, USA
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28
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Krzeszewski M, Espinoza EM, Červinka C, Derr JB, Clark JA, Borchardt D, Beran GJO, Gryko DT, Vullev VI. Dipole Effects on Electron Transfer are Enormous. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802637] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Maciej Krzeszewski
- Department of Bioengineering University of California, Riverside Riverside CA 92521 USA
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44–52 01-224 Warsaw Poland
- Present address: Graduate School of Science Nagoya University Chikusa Nagoya 464-8602 Japan
| | - Eli M. Espinoza
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
| | - Ctirad Červinka
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
- Department of Physical Chemistry University of Chemistry and Technology Technická 5 166 28 Prague 6—Dejvice Czech Republic
| | - James B. Derr
- Department of Biochemistry University of California, Riverside Riverside CA 92521 USA
| | - John A. Clark
- Department of Bioengineering University of California, Riverside Riverside CA 92521 USA
| | - Dan Borchardt
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
| | - Gregory J. O. Beran
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
| | - Daniel T. Gryko
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44–52 01-224 Warsaw Poland
| | - Valentine I. Vullev
- Department of Bioengineering University of California, Riverside Riverside CA 92521 USA
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
- Department of Biochemistry University of California, Riverside Riverside CA 92521 USA
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29
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Hirakawa K, Kaneko T, Toshima N. Kinetics of Spontaneous Bimetallization between Silver and Noble Metal Nanoparticles. Chem Asian J 2018; 13:1892-1896. [PMID: 29870120 DOI: 10.1002/asia.201800633] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/28/2018] [Indexed: 01/23/2023]
Abstract
A physical mixture of polymer-protected Ag nanoparticles and Rh, Pd, or Pt nanoparticles spontaneously forms Ag-core bimetallic nanoparticles. The formed nanoparticles were smaller than the parent Ag nanoparticles. In the initial process of this reaction, the surface plasmon absorption of Ag nanoparticles diminished and then almost ceased within one hour. Within several minutes, the decrease in Ag surface plasmon absorption could be analyzed by second-order reaction. This reaction was accelerated with an increase of temperature and the energy gap in the Fermi level between Ag and the other metals. The activation energy (Ea ) of this reaction could be determined. An electron transfer reaction from Ag to other metal nanoparticles was proposed as the initial interaction between these metal nanoparticles because the Fermi level of Ag is relatively high, and the electron transfer is possible in terms of energy. The Marcus plot between the rate constant and the driving force, roughly estimated from the work function of metals, and the observed Ea values reasonably explained the proposed electron transfer mechanism.
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Affiliation(s)
- Kazutaka Hirakawa
- Department of Applied Chemistry and Biochemical Engineering, Shizuoka University, Johoku 3-5-1, Naka-ku, Hamamatsu, Shizuoka, 432-8561, Japan
| | - Tetsuya Kaneko
- Department of Applied Chemistry and Biochemical Engineering, Shizuoka University, Johoku 3-5-1, Naka-ku, Hamamatsu, Shizuoka, 432-8561, Japan
| | - Naoki Toshima
- Division of Thermoelectrics for Waste Heat Recovery, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
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30
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Reguera G. Harnessing the power of microbial nanowires. Microb Biotechnol 2018; 11:979-994. [PMID: 29806247 PMCID: PMC6201914 DOI: 10.1111/1751-7915.13280] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/13/2018] [Accepted: 04/22/2018] [Indexed: 12/13/2022] Open
Abstract
The reduction of iron oxide minerals and uranium in model metal reducers in the genus Geobacter is mediated by conductive pili composed primarily of a structurally divergent pilin peptide that is otherwise recognized, processed and assembled in the inner membrane by a conserved Type IVa pilus apparatus. Electronic coupling among the peptides is promoted upon assembly, allowing the discharge of respiratory electrons at rates that greatly exceed the rates of cellular respiration. Harnessing the unique properties of these conductive appendages and their peptide building blocks in metal bioremediation will require understanding of how the pilins assemble to form a protein nanowire with specialized sites for metal immobilization. Also important are insights into how cells assemble the pili to make an electroactive matrix and grow on electrodes as biofilms that harvest electrical currents from the oxidation of waste organic substrates. Genetic engineering shows promise to modulate the properties of the peptide building blocks, protein nanowires and current‐harvesting biofilms for various applications. This minireview discusses what is known about the pilus material properties and reactions they catalyse and how this information can be harnessed in nanotechnology, bioremediation and bioenergy applications.
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Affiliation(s)
- Gemma Reguera
- Department of Microbiology and Molecular Genetics, Michigan State University, 567 Wilson Rd., Rm. 6190, East Lansing, MI, 48824, USA
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31
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López-Estrada O, Laguna HG, Barrueta-Flores C, Amador-Bedolla C. Reassessment of the Four-Point Approach to the Electron-Transfer Marcus-Hush Theory. ACS OMEGA 2018; 3:2130-2140. [PMID: 31458519 PMCID: PMC6641260 DOI: 10.1021/acsomega.7b01425] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 02/08/2018] [Indexed: 05/25/2023]
Abstract
The Marcus-Hush theory has been successfully applied to describe and predict the activation barriers and hence the electron-transfer (ET) rates in several physicochemical and biological systems. This theory assumes that in the ET reaction, the geometry of the free Gibbs energy landscape is parabolic, with equal curvature near the local minimum for both reactants and products. In spite of its achievements, more realistic models have included the assumption of the two parabolas having not the same curvature. This situation is analyzed by the Nelsen's four-point method. As a benchmark to compare the Marcus-Hush approximation to a precise calculation of the excitation energy, we studied the non-ET process of the electronic excitation of the aluminum dimer that has two local minima (3∑g - and 3∏u electronic states) and allows to obtain analytically the Marcus-Hush nonsymmetric parameters. We appraise the ability of the Marcus-Hush formula to approximate the analytical results by using several averages of the two reorganization energies associated with the forward and backward transitions and analyze the error. It is observed that the geometric average minimizes the relative error and that the analytical case is recovered. The main results of this paper are obtained by the application of the Nelsen's four-point method to compute the reorganization energies of a large set of potential π-conjugated molecules proposed for organic photovoltaic devices using the above-mentioned averages for the Marcus-Hush formula. The activation energies obtained with the geometric average are significantly larger for some donor-acceptor pairs in comparison with the previously employed arithmetic average, their differences being suitable for experimental testing.
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32
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Larsen-Clinton JM, Espinoza EM, F Mayther M, Clark J, Tao C, Bao D, Larino CM, Wurch M, Lara S, Vullev VI. Fluorinated aminoanthranilamides: non-native amino acids for bringing proteomic approaches to charge-transfer systems. Phys Chem Chem Phys 2018; 19:7871-7876. [PMID: 28262882 DOI: 10.1039/c7cp00432j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The ability to control charge transfer at molecular and nanometer scales represents the ultimate level of electronic mastery, and its impacts cannot be overstated. As electrostatic analogues of magnets, electrets possess ordered electric dipoles that present key paradigms for directing transduction of electrons and holes. Herein we describe the design and development of fluorinated aminoanthranilamides, derivatives of non-native aromatic beta-amino acids, as building blocks for hole-transfer molecular electrets. A highly regio-selective nucleophilic aromatic substitution of difluorinated nitrobenzoic acid provides the underpinnings for an array of unprecedented anthranilamide structures. Spin density distribution and electrochemical analyses reveal that fluorine induces about 200 mV positive shifts in reduction potentials without compromising the stability of the oxidized residues, making them invaluable building blocks for hole-transfer systems. These findings open unexplored routes to novel amino-acid structures, setting a foundation for bringing principles of proteomics to designs of charge-transfer systems.
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Affiliation(s)
| | - Eli M Espinoza
- Department of Chemistry, University of California, Riverside, CA 92521, USA
| | | | - John Clark
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - Christina Tao
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - Duoduo Bao
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - Christa M Larino
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - Michelle Wurch
- Department of Bioengineering, University of California, Riverside, CA 92521, USA. and Materials Science and Engineering Program, University of California, Riverside, CA 92521, USA
| | - Stephanie Lara
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - Valentine I Vullev
- Department of Bioengineering, University of California, Riverside, CA 92521, USA. and Department of Chemistry, University of California, Riverside, CA 92521, USA and Materials Science and Engineering Program, University of California, Riverside, CA 92521, USA and Department of Biochemistry, University of California, Riverside, CA 92521, USA
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33
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Matsushita D, Uji H, Kimura S. Effect of oscillation dynamics on long-range electron transfer in a helical peptide monolayer. Phys Chem Chem Phys 2018; 20:15216-15222. [DOI: 10.1039/c8cp02315h] [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
Electron transfer (ET) reactions via helical peptides composed of –(Aib-Pro)n– were studied in self-assembled monolayers and compared with –(Ala-Aib)n– peptides.
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Affiliation(s)
- Daisuke Matsushita
- Department of Material Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto-Daigaku-Katsura
- Nishikyo-ku
| | - Hirotaka Uji
- Department of Material Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto-Daigaku-Katsura
- Nishikyo-ku
| | - Shunsaku Kimura
- Department of Material Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto-Daigaku-Katsura
- Nishikyo-ku
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34
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Han P, Guo R, Wang Y, Yao L, Liu C. Bidirectional Electron-Transfer in Polypeptides with Various Secondary Structures. Sci Rep 2017; 7:16445. [PMID: 29180651 PMCID: PMC5703997 DOI: 10.1038/s41598-017-16678-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 11/16/2017] [Indexed: 12/25/2022] Open
Abstract
The protein-mediated bidirectional electron transfer (ET) is the foundation of protein molecular wire, and plays an important role in the rapid detection of oxo-guanine-adenine DNA mismatches by MutY glycosylase. However, the influences of structural transitions on bidirectional ET are still not clear. In this work, the modified through-bond coupling (MTBC) model was further refined to correlate the structural transition and ET rate more quantitatively. With this model, various polyglycine structures (310-helix, α-helix, β-sheets, linear, polyproline helical I and II) were studied to explore the influences of structural transitions on bidirectional ET. It was found that the HOMO-LUMO gaps (ΔE) in CN (from the carboxyl to amino terminus) direction are much lower than that in opposite direction, except for polypro I. However, with the equal tunneling energy, the differences between bidirectional ET rates are slight for all structures. In structural transitions, we found that the ET rates are not only affected by the Ramachandran angles, but also correlated to the alignment of C = O vectors, the alignment of peptide planes and the rearrangement of other structure factors. The detailed information can be used to rationalize the inhomogeneous ET across different protein structures and design more efficient protein molecular wires.
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Affiliation(s)
- Ping Han
- Department of Neurology, Haici Hospital Affiliated to Medical College of Qingdao University, Qingdao, 266033, Shandong, P.R. China
| | - Ruiyou Guo
- Department of Neurology, Haici Hospital Affiliated to Medical College of Qingdao University, Qingdao, 266033, Shandong, P.R. China
| | - Yefei Wang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, Shandong, P.R. China.
| | - Lishan Yao
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, Shandong, P.R. China
| | - Chengbu Liu
- Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, Shandong, China
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35
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Espinoza EM, Larsen-Clinton JM, Krzeszewski M, Darabedian N, Gryko DT, Vullev VI. Bioinspired approach toward molecular electrets: synthetic proteome for materials. PURE APPL CHEM 2017. [DOI: 10.1515/pac-2017-0309] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AbstractMolecular-level control of charge transfer (CT) is essential for both, organic electronics and solar-energy conversion, as well as for a wide range of biological processes. This article provides an overview of the utility of local electric fields originating from molecular dipoles for directing CT processes. Systems with ordered dipoles, i.e. molecular electrets, are the centerpiece of the discussion. The conceptual evolution from biomimicry to biomimesis, and then to biological inspiration, paves the roads leading from testing the understanding of how natural living systems function to implementing these lessons into optimal paradigms for specific applications. This progression of the evolving structure-function relationships allows for the development of bioinspired electrets composed of non-native aromatic amino acids. A set of such non-native residues that are electron-rich can be viewed as a synthetic proteome for hole-transfer electrets. Detailed considerations of the electronic structure of an individual residue prove of key importance for designating the points for optimal injection of holes (i.e. extraction of electrons) in electret oligomers. This multifaceted bioinspired approach for the design of CT molecular systems provides unexplored paradigms for electronic and energy science and engineering.
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Affiliation(s)
- Eli M. Espinoza
- Department of Chemistry, University of California, Riverside, CA 92521, USA
| | | | - Maciej Krzeszewski
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Narek Darabedian
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
| | - Daniel T. Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Valentine I. Vullev
- Department of Chemistry, University of California, Riverside, CA 92521, USA
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
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36
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Itagaki T, Matsushita D, Uji H, Fujii T, Heidy V, Hirao K, Kimura S. Accordion-like Oscillation Mode of Helical Peptides Analyzed by Terahertz Time-domain Spectroscopy. CHEM LETT 2017. [DOI: 10.1246/cl.170655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toru Itagaki
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510
| | - Daisuke Matsushita
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510
| | - Hirotaka Uji
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510
| | - Takashi Fujii
- Nippo Precision Co., Ltd, Hosaka-cho, Nirasaki, Yamanashi 407-0175
| | - Visbal Heidy
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510
| | - Kazuyuki Hirao
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510
| | - Shunsaku Kimura
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510
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37
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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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38
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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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39
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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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40
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Ing NL, Nusca TD, Hochbaum AI. Geobacter sulfurreducenspili support ohmic electronic conduction in aqueous solution. Phys Chem Chem Phys 2017; 19:21791-21799. [DOI: 10.1039/c7cp03651e] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Solid-state and electrochemical observations of ohmic conductivity in purifiedGeobacter sulfurreducenspili.
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Affiliation(s)
- Nicole L. Ing
- Department of Chemical Engineering and Materials Science
- University of California
- Irvine
- Irvine
- USA
| | - Tyler D. Nusca
- Department of Chemical Engineering and Materials Science
- University of California
- Irvine
- Irvine
- USA
| | - Allon I. Hochbaum
- Department of Chemical Engineering and Materials Science
- University of California
- Irvine
- Irvine
- USA
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41
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Gobbo P, Antonello S, Guryanov I, Polo F, Soldà A, Zen F, Maran F. Dipole Moment Effect on the Electrochemical Desorption of Self-Assembled Monolayers of 310-Helicogenic Peptides on Gold. ChemElectroChem 2016. [DOI: 10.1002/celc.201600573] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pierangelo Gobbo
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Sabrina Antonello
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Ivan Guryanov
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- Institute of Chemistry; St. Petersburg State University, 26 Universitetskij Pr.; 198504 Saint-Petersburg Russia
| | - Federico Polo
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- National Cancer Institute-Centro di Riferimento Oncologico; Via Franco Gallini 2 33081 Aviano Italy
| | - Alice Soldà
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- Department of Chemistry; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Federico Zen
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- School of Chemistry; Trinity College Dublin, College Green; Dublin 2 Ireland
| | - Flavio Maran
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
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42
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Guo P, Lei X, Gao Y. Conformational flexibility of PPII-helix: A density functional theory study. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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43
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Abstract
Oligoamides composed of anthranilic acid derivatives present a promising choice for mediating long-range charge transfer and controlling its directionality. Hole hopping, modulated by the anthranilamide (Aa) permanent dipoles, provides a plausible means for such rectified long-range charge transduction. All aliphatic and most aromatic amides, however, decompose upon oxidation, rendering them unacceptable for hole-hopping pathways. We, therefore, employ electrochemical and computational analysis to examine how to suppress oxidative degradation and stabilize the radical cations of N-acylated Aa derivatives. Our findings reveal two requirements for attaining long-lived radical cations of these aromatic amides: (1) keeping the reduction potentials for oxidizing the Aa residues under about 1.4 V vs SCE and (2) adding an electron-donating group para to the N-terminal amide of the aromatic ring, which prevents the electron spin density of the radical cation from extending over the C-terminal amide. These findings provide essential information for the design of hole-transfer amides.
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Affiliation(s)
- Eli M Espinoza
- Department of Chemistry, University of California , Riverside, California 92521, United States
| | - Jillian M Larsen
- Department of Bioengineering, University of California , Riverside, California 92521, United States
| | - Valentine I Vullev
- Department of Chemistry, University of California , Riverside, California 92521, United States
- Department of Bioengineering, University of California , Riverside, California 92521, United States
- Department of Biochemistry, University of California , Riverside, California 92521, United States
- Materials Science and Engineering Program, University of California , Riverside, California 92521, United States
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44
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Berstis L, Beckham GT, Crowley MF. Electronic coupling through natural amino acids. J Chem Phys 2015; 143:225102. [PMID: 26671404 DOI: 10.1063/1.4936588] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Laura Berstis
- National Renewable Energy Laboratory, National Bioenergy Center, 15013 Denver West Pkwy, Golden, Colorado 80401, USA
| | - Gregg T. Beckham
- National Renewable Energy Laboratory, National Bioenergy Center, 15013 Denver West Pkwy, Golden, Colorado 80401, USA
| | - Michael F. Crowley
- National Renewable Energy Laboratory, National Bioenergy Center, 15013 Denver West Pkwy, Golden, Colorado 80401, USA
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45
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Feliciano GT, Steidl RJ, Reguera G. Structural and functional insights into the conductive pili of Geobacter sulfurreducens revealed in molecular dynamics simulations. Phys Chem Chem Phys 2015; 17:22217-26. [PMID: 26243427 DOI: 10.1039/c5cp03432a] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Geobacter sulfurreducens (GS) electronically connects with extracellular electron acceptors using conductive protein filaments or pili. To gain insights into their role as biological nanowires, we investigated the structural dynamics of the GS pilus in solution via molecular dynamics simulations. In the model, all of the pilin's aromatics clustered as a right-handed helical band along the pilus, maintaining inter-aromatic distances and dimer configurations optimal for multistep hopping. The aromatics were interspersed within the regions of highest negative potential, which influenced the type and configuration of the aromatic contacts and the rates of electron transfer. Small foci of positive potential were also present but were neutralized within uncharged regions, thus minimizing charge trapping. Consistent with the model predictions, mutant strains with reduced aromatic contacts or negative potentials had defects in pili functions such as the reduction of Fe(III) oxides and electrodes. The results therefore support the notion of a pilus fiber evolved to function as an electronic conduit between the cell and extracellular electron acceptors.
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Affiliation(s)
- G T Feliciano
- Departamento de Físico-Química, Instituto de Quimica, Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Nanobionics Group, Sao Paulo, Araraquara, Brazil
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46
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Larsen JM, Espinoza EM, Hartman JD, Lin CK, Wurch M, Maheshwari P, Kaushal RK, Marsella MJ, Beran GJO, Vullev VI. Building blocks for bioinspired electrets: molecular-level approach to materials for energy and electronics. PURE APPL CHEM 2015. [DOI: 10.1515/pac-2015-0109] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
AbstractIn biology, an immense diversity of protein structural and functional motifs originates from only 20 common proteinogenic native amino acids arranged in various sequences. Is it possible to attain the same diversity in electronic materials based on organic macromolecules composed of non-native residues with different characteristics? This publication describes the design, preparation and characterization of non-native aromatic β-amino acid residues, i.e. derivatives of anthranilic acid, for polyamides that can efficiently mediate hole transfer. Chemical derivatization with three types of substituents at two positions of the aromatic ring allows for adjusting the energy levels of the frontier orbitals of the anthranilamide residues over a range of about one electronvolt. Most importantly, the anthranilamide residues possess permanent electric dipoles, adding to the electronic properties of the bioinspired conjugates they compose, making them molecular electrets.
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Affiliation(s)
- Jillian M. Larsen
- 1Department of Bioengineering, University of California, Riverside, CA, 92507, USA
| | - Eli M. Espinoza
- 2Department of Chemistry, University of California, Riverside, CA, 92507, USA
| | - Joshua D. Hartman
- 2Department of Chemistry, University of California, Riverside, CA, 92507, USA
| | - Chung-Kuang Lin
- 1Department of Bioengineering, University of California, Riverside, CA, 92507, USA
| | - Michelle Wurch
- 1Department of Bioengineering, University of California, Riverside, CA, 92507, USA
| | - Payal Maheshwari
- 1Department of Bioengineering, University of California, Riverside, CA, 92507, USA
| | - Raman K. Kaushal
- 1Department of Bioengineering, University of California, Riverside, CA, 92507, USA
| | - Michael J. Marsella
- 2Department of Chemistry, University of California, Riverside, CA, 92507, USA
| | - Gregory J. O. Beran
- 2Department of Chemistry, University of California, Riverside, CA, 92507, USA
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47
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Sepunaru L, Refaely-Abramson S, Lovrinčić R, Gavrilov Y, Agrawal P, Levy Y, Kronik L, Pecht I, Sheves M, Cahen D. Electronic Transport via Homopeptides: The Role of Side Chains and Secondary Structure. J Am Chem Soc 2015; 137:9617-26. [DOI: 10.1021/jacs.5b03933] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lior Sepunaru
- Department of Materials and Interfaces, ‡Department of Organic
Chemistry, §Department of Structural
Biology, and ∥Department of Immunology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Sivan Refaely-Abramson
- Department of Materials and Interfaces, ‡Department of Organic
Chemistry, §Department of Structural
Biology, and ∥Department of Immunology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Robert Lovrinčić
- Department of Materials and Interfaces, ‡Department of Organic
Chemistry, §Department of Structural
Biology, and ∥Department of Immunology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Yulian Gavrilov
- Department of Materials and Interfaces, ‡Department of Organic
Chemistry, §Department of Structural
Biology, and ∥Department of Immunology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Piyush Agrawal
- Department of Materials and Interfaces, ‡Department of Organic
Chemistry, §Department of Structural
Biology, and ∥Department of Immunology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Yaakov Levy
- Department of Materials and Interfaces, ‡Department of Organic
Chemistry, §Department of Structural
Biology, and ∥Department of Immunology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Leeor Kronik
- Department of Materials and Interfaces, ‡Department of Organic
Chemistry, §Department of Structural
Biology, and ∥Department of Immunology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Israel Pecht
- Department of Materials and Interfaces, ‡Department of Organic
Chemistry, §Department of Structural
Biology, and ∥Department of Immunology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Mordechai Sheves
- Department of Materials and Interfaces, ‡Department of Organic
Chemistry, §Department of Structural
Biology, and ∥Department of Immunology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - David Cahen
- Department of Materials and Interfaces, ‡Department of Organic
Chemistry, §Department of Structural
Biology, and ∥Department of Immunology, Weizmann Institute of Science, Rehovot, 7610001, Israel
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48
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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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49
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Juhaniewicz J, Pawlowski J, Sek S. Electron Transport Mediated by Peptides Immobilized on Surfaces. Isr J Chem 2015. [DOI: 10.1002/ijch.201400165] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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50
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Berstis L, Baldridge KK. DFT-based Green's function pathways model for prediction of bridge-mediated electronic coupling. Phys Chem Chem Phys 2015; 17:30842-53. [DOI: 10.1039/c5cp01861g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New LMO-GFM methodology enables intuitive understanding of electron tunneling in terms of through-bond and through-space interactions.
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