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Schatz D, Baumert ME, Kersten MC, Schneider FM, Nielsen MB, Hansmann MM, Wegner HA. para-Aminoazobenzenes-Bipolar Redox-Active Molecules. Angew Chem Int Ed Engl 2024; 63:e202405618. [PMID: 38869230 DOI: 10.1002/anie.202405618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/27/2024] [Accepted: 05/27/2024] [Indexed: 06/14/2024]
Abstract
Azobenzenes (ABs) are versatile compounds featured in numerous applications for energy storage systems, such as solar thermal storages or phase change materials. Additionally, the reversible one-electron reduction of these diazenes to the nitrogen-based radical anion has been used in battery applications. Although the oxidation of ABs is normally irreversible, 4,4'-diamino substitution allows a reversible 2e- oxidation, which is attributed to the formation of a stable bis-quinoidal structure. Herein, we present a system that shows a bipolar redox behaviour. In this way, ABs can serve not only as anolytes, but also as catholytes. The resulting redox potentials can be tailored by suitable amine- and ring-substitution. For the first time, the solid-state structure of the oxidized form could be characterized by X-ray diffraction.
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Affiliation(s)
- Dominic Schatz
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
- Center of Materials Research (ZfM/LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392, Gießen, Germany
| | - Marcel E Baumert
- Faculty of Chemistry and Chemical Biology (CCB), Technical University of Dortmund, Otto-Hahn Str. 6., 44227, Dortmund, Germany
| | - Marie C Kersten
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
- Center of Materials Research (ZfM/LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392, Gießen, Germany
| | - Finn M Schneider
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
- Center of Materials Research (ZfM/LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392, Gießen, Germany
| | | | - Max M Hansmann
- Faculty of Chemistry and Chemical Biology (CCB), Technical University of Dortmund, Otto-Hahn Str. 6., 44227, Dortmund, Germany
| | - Hermann A Wegner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
- Center of Materials Research (ZfM/LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392, Gießen, Germany
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2
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Wang X, Xu S, Zhang B, Wu H, Liu Y, Zhang X, Wang ZG. Dynamic control of His-hemin coordination and catalysis by reversible host-guest inclusion in peptide assemblies. J Colloid Interface Sci 2024; 678:421-426. [PMID: 39213994 DOI: 10.1016/j.jcis.2024.08.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 08/12/2024] [Accepted: 08/19/2024] [Indexed: 09/04/2024]
Abstract
Dynamic self-assembly has significant implications in the regulation of the enzyme activities. In this study, we present a histidine-based enzyme-mimicking catalyst, formed by the self-assembly of carefully-engineered FH-based short peptides with hemin, showcasing switchable catalytic activity of hemin due to externally induced reversible inclusion of a cucurbit[7]uril-peptide hybrid. 1H NMR, ITC and theoretical simulation are employed to examine the binding affinity between the guest and host components, and UV-vis spectra are used to investigate changes in the hemin coordination environment. The histidine segment of the short peptide can be partially shielded by the cucurbituril and released following addition of the azo compound, leading to a decrease and subsequent restoration of the histidine-hemin coordination affinity and hemin activity. The photoisomeriziable nature of the azo compound enabled the activation of FHH/hemin activity to be switched on and off by exposure to different wavelengths of light. During the operation, the Phe residue remained within the cucurbituril, allowing reversible inclusion and exposure of the histidine residues. The hemin stayed connected to FHH/cucurbit[7]uril hybrid, preventing the severe aggregation of hemin and irreversible deactivation. This work may provide insights into engineering the dynamic behaviors of the cofactor-dependent catalytic assemblies.
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Affiliation(s)
- Xinyue Wang
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shichao Xu
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Baoli Zhang
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Haifeng Wu
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yuanxi Liu
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xianxue Zhang
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhen-Gang Wang
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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3
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Tobin CM, Gordon R, Tochikura SK, Chmelka BF, Morse DE, Read de Alaniz J. Reversible and size-controlled assembly of reflectin proteins using a charged azobenzene photoswitch. Chem Sci 2024; 15:13279-13289. [PMID: 39183923 PMCID: PMC11339800 DOI: 10.1039/d4sc03299c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Accepted: 07/16/2024] [Indexed: 08/27/2024] Open
Abstract
Disordered proteins often undergo a stimuli-responsive, disorder-to-order transition which facilitates dynamic processes that modulate the physiological activities and material properties of cells, such as strength, chemical composition, and reflectance. It remains challenging to gain rapid and spatiotemporal control over such disorder-to-order transitions, which limits the incorporation of these proteins into novel materials. The reflectin protein is a cationic, disordered protein whose assembly is responsible for dynamic color camouflage in cephalopods. Stimuli-responsive control of reflectin's assembly would enable the design of biophotonic materials with tunable color. Herein, a novel, multivalent azobenzene photoswitch is shown to be an effective and non-invasive strategy for co-assembling with reflectin molecules and reversibly controlling assembly size. Photoisomerization between the trans and cis (E and Z) photoisomers promotes or reduces Coulombic interactions, respectively, with reflectin proteins to repeatedly cycle the sizes of the photoswitch-reflectin assemblies between 70 nm and 40 nm. The protein assemblies formed with the trans and cis isomers show differences in interaction stoichiometry and secondary structure, which indicate that photoisomerization modulates the photoswitch-protein interactions to change assembly size. Our results highlight the utility of photoswitchable interactions to control reflectin assembly and provide a tunable synthetic platform that can be adapted to the structure, assembly, and function of other disordered proteins.
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Affiliation(s)
- Cassidy M Tobin
- Department of Chemical Engineering, University of California Santa Barbara California 93106 USA
| | - Reid Gordon
- Department of Molecular, Cellular, and Developmental Biology, University of California Santa Barbara California 93106 USA
| | - Seren K Tochikura
- Department of Molecular, Cellular, and Developmental Biology, University of California Santa Barbara California 93106 USA
| | - Bradley F Chmelka
- Department of Chemical Engineering, University of California Santa Barbara California 93106 USA
| | - Daniel E Morse
- Department of Molecular, Cellular, and Developmental Biology, University of California Santa Barbara California 93106 USA
| | - Javier Read de Alaniz
- Department of Chemistry and Biochemistry, University of California Santa Barbara California 93106 USA
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4
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Slanska M, Stackova L, Marques SM, Stacko P, Martínek M, Jílek L, Toul M, Damborsky J, Bednar D, Klán P, Prokop Z. Azobenzene-Based Photoswitchable Substrates for Advanced Mechanistic Studies of Model Haloalkane Dehalogenase Enzyme Family. ACS Catal 2024; 14:11635-11645. [PMID: 39114093 PMCID: PMC11301625 DOI: 10.1021/acscatal.4c03503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Accepted: 07/08/2024] [Indexed: 08/10/2024]
Abstract
The engineering of efficient enzymes for large-scale production of industrially relevant compounds is a challenging task. Utilizing rational protein design, which relies on a comprehensive understanding of mechanistic information, holds significant promise for achieving success in this endeavor. Pre-steady-state kinetic measurements, obtained either through fast-mixing techniques or photoswitchable substrates, provide crucial mechanistic insights. The latter approach not only furnishes mechanistic clarity but also affords real-time structural elucidation of reaction intermediates via time-resolved femtosecond crystallography. Unfortunately, only a limited number of such valuable mechanistic probes are available. To address this gap, we applied a multidisciplinary approach, including computational analysis, chemical synthesis, physicochemical property screening, and enzyme kinetics to identify promising candidates for photoswitchable probes. We demonstrate the approach by designing an azobenzene-based photoswitchable substrate tailored for haloalkane dehalogenases, a prototypic class of enzymes pivotal in developing computational tools for rational protein design. The probe was subjected to steady-state and pre-steady-state kinetic analysis, which revealed new insights about the catalytic behavior of the model biocatalysts. We employed laser-triggered Z-to-E azobenzene photoswitching to generate the productive isomer in situ, opening avenues for advanced mechanistic studies using time-resolved femtosecond crystallography. Our results not only pave the way for the mechanistic understanding of this model enzyme family, incorporating both kinetic and structural dimensions, but also propose a systematic approach to the rational design of photoswitchable enzymatic substrates.
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Affiliation(s)
- Michaela Slanska
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Lenka Stackova
- RECETOX,
Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
- Department
of Chemistry, Faculty of Science, Masaryk
University, Brno 625 00, Czech Republic
| | - Sergio M. Marques
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, Brno 625 00, Czech Republic
- International
Clinical Research Centre, St. Ann’s Hospital, Brno 625 00, Czech Republic
| | - Peter Stacko
- RECETOX,
Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
- Department
of Chemistry, Faculty of Science, Masaryk
University, Brno 625 00, Czech Republic
| | - Marek Martínek
- RECETOX,
Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
- Department
of Chemistry, Faculty of Science, Masaryk
University, Brno 625 00, Czech Republic
| | - Luboš Jílek
- RECETOX,
Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
- Department
of Chemistry, Faculty of Science, Masaryk
University, Brno 625 00, Czech Republic
| | - Martin Toul
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, Brno 625 00, Czech Republic
- International
Clinical Research Centre, St. Ann’s Hospital, Brno 625 00, Czech Republic
| | - Jiri Damborsky
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, Brno 625 00, Czech Republic
- International
Clinical Research Centre, St. Ann’s Hospital, Brno 625 00, Czech Republic
| | - David Bednar
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, Brno 625 00, Czech Republic
- International
Clinical Research Centre, St. Ann’s Hospital, Brno 625 00, Czech Republic
| | - Petr Klán
- RECETOX,
Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
- Department
of Chemistry, Faculty of Science, Masaryk
University, Brno 625 00, Czech Republic
| | - Zbynek Prokop
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, Brno 625 00, Czech Republic
- International
Clinical Research Centre, St. Ann’s Hospital, Brno 625 00, Czech Republic
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5
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Hunt NT. Using 2D-IR Spectroscopy to Measure the Structure, Dynamics, and Intermolecular Interactions of Proteins in H 2O. Acc Chem Res 2024; 57:685-692. [PMID: 38364823 PMCID: PMC10918835 DOI: 10.1021/acs.accounts.3c00682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 02/18/2024]
Abstract
Infrared (IR) spectroscopy probes molecular structure at the level of the chemical bond or functional group. In the case of proteins, the most informative band in the IR spectrum is the amide I band, which arises predominantly from the C═O stretching vibration of the peptide link. The folding of proteins into secondary and tertiary structures leads to vibrational coupling between peptide units, generating specific amide I spectral signatures that provide a fingerprint of the macromolecular conformation. Ultrafast two-dimensional IR (2D-IR) spectroscopy allows the amide I band of a protein to be spread over a second frequency dimension in a way that mirrors 2D-NMR methods. This means that amide I 2D-IR spectroscopy produces a spectral map that is exquisitely sensitive to protein structure and dynamics and so provides detailed insights that cannot be matched by IR absorption spectroscopy. As a result, 2D-IR spectroscopy has emerged as a powerful tool for probing protein structure and dynamics over a broad range of time and length scales in the solution phase at room temperature. However, the protein amide I band coincides with an IR absorption from the bending vibration of water (δHOH), the natural biological solvent. To circumvent this problem, protein IR studies are routinely performed in D2O solutions because H/D substitution shifts the solvent bending mode (δDOD) to a lower frequency, revealing the amide I band. While effective, this method raises fundamental questions regarding the impact of the change in solvent mass on the structural or solvation dynamics of the protein and the removal of the energetic resonance between solvent and solute.In this Account, a series of studies applying 2D-IR to study the spectroscopy and dynamics of proteins in H2O-rich solvents is reviewed. A comparison of IR absorption spectroscopy and 2D-IR spectroscopy of protein-containing fluids is used to demonstrate the basis of the approach before a series of applications is presented. These range from measurements of fundamental protein biophysics to recent applications of machine learning to gain insight into protein-drug binding in complex mixtures. An outlook is presented, considering the potential for 2D-IR measurements to contribute to our understanding of protein behavior under near-physiological conditions, along with an evaluation of the obstacles that still need to be overcome.
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Affiliation(s)
- Neil T. Hunt
- Department of Chemistry and York Biomedical
Research Institute, University of York, Heslington, York, YO10
5DD, U.K.
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6
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Meng X, Lin S, Chen S, Shen X, Guo D, Guo J. Recent Advances in Smart Windows Based on Photo-Responsive Liquid Crystals Featuring Phase Transition. Chempluschem 2024; 89:e202300700. [PMID: 38230830 DOI: 10.1002/cplu.202300700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 01/18/2024]
Abstract
A smart window is an optical dimming device with intelligent functions that can control its relevant performances through external stimuli, achieving functions such as privacy protection and temperature regulation. Light is an ideal stimulus for regulating smart windows, which is noninvasive and allows self-adaptable manipulation of materials. This review highlights recent significant achievements in smart windows constructed by photo-responsive liquid crystals (LCs) systems that can undergo the transition between different phases. The smart windows based on photo-responsive LCs are used in a plethora of areas, including privacy protection, absorption glass, building decoration, energy saving, and climate modulation applications. The review concludes with a brief perspective on some significant challenges and opportunities for the future development of photo-responsive smart windows, which is crucial for expanding the applications of smart windows and improving their performances.
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Affiliation(s)
- Xianyu Meng
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Siyang Lin
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shuo Chen
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xuanzhe Shen
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Dekang Guo
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jinbao Guo
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
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7
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Dorbath E, Gulzar A, Stock G. Log-periodic oscillations as real-time signatures of hierarchical dynamics in proteins. J Chem Phys 2024; 160:074103. [PMID: 38364004 DOI: 10.1063/5.0188220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/23/2024] [Indexed: 02/18/2024] Open
Abstract
The time-dependent relaxation of a dynamical system may exhibit a power-law behavior that is superimposed by log-periodic oscillations. D. Sornette [Phys. Rep. 297, 239 (1998)] showed that this behavior can be explained by a discrete scale invariance of the system, which is associated with discrete and equidistant timescales on a logarithmic scale. Examples include such diverse fields as financial crashes, random diffusion, and quantum topological materials. Recent time-resolved experiments and molecular dynamics simulations suggest that discrete scale invariance may also apply to hierarchical dynamics in proteins, where several fast local conformational changes are a prerequisite for a slow global transition to occur. Employing entropy-based timescale analysis and Markov state modeling to a simple one-dimensional hierarchical model and biomolecular simulation data, it is found that hierarchical systems quite generally give rise to logarithmically spaced discrete timescales. By introducing a one-dimensional reaction coordinate that collectively accounts for the hierarchically coupled degrees of freedom, the free energy landscape exhibits a characteristic staircase shape with two metastable end states, which causes the log-periodic time evolution of the system. The period of the log-oscillations reflects the effective roughness of the energy landscape and can, in simple cases, be interpreted in terms of the barriers of the staircase landscape.
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Affiliation(s)
- Emanuel Dorbath
- Biomolecular Dynamics, Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - Adnan Gulzar
- Biomolecular Dynamics, Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - Gerhard Stock
- Biomolecular Dynamics, Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
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8
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Dobre AF, Hanganu A, Nicolau I, Popescu CC, Paun A, Mădălan AM, Tablet C, Mirea AG, Matache M. A Synthetic Approach for Oxadiazole-Decorated Azobenzene Photoswitches. Chempluschem 2024; 89:e202300504. [PMID: 37882979 DOI: 10.1002/cplu.202300504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/24/2023] [Accepted: 10/24/2023] [Indexed: 10/27/2023]
Abstract
This work reports the design and synthesis of novel oxadiazole-decorated azobenzenes, structural analysis of the resulting compounds and behavior under light irradiation. The synthetic strategy involved constructing amino functionalized heterocyclic key intermediates which were used either to yield electrophilic diazonium salts able to react with phenol moieties or as nucleophilic partners in Bayer-Mills reaction with nitroso-substituted derivatives. The amino-derived oxadiazole intermediates were investigated by absorption and emission spectroscopy providing blue and green emitted light. The target oxadiazole-decorated azobenzenes were structurally characterized, including solid-state structures, and subsequently used in irradiation experiments in order to take advantage of the azo group known to provide photoswitching abilities. We noticed quenching of the emissive properties in presence of the azo group; however, all compounds were very stable to repeated cycles of light irradiation. In addition, according to structural diversification we could obtain half-lives of the meta stable isomers within hours to hundreds of hours range. The experimental results were very well correlated with DFT calculations.
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Affiliation(s)
- Adela F Dobre
- Faculty of Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
- Research Centre of Applied Organic Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
| | - Anamaria Hanganu
- Research Centre of Applied Organic Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
- "C. D. Nenitzescu" Institute of Organic and Supramolecular Chemistry of the Romanian Academy, 202B Spl. Independenţei, 060023, Bucharest, Romania
| | - Ioana Nicolau
- Faculty of Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
- Research Centre of Applied Organic Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
| | - Codruta C Popescu
- Faculty of Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
- Research Centre of Applied Organic Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
| | - Anca Paun
- Faculty of Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
- Research Centre of Applied Organic Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
| | - Augustin M Mădălan
- Faculty of Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
| | - Cristina Tablet
- Faculty of Pharmacy, Titu Maiorescu University, Gh. Sincai Bd. 16, 040317, Bucharest, Romania
| | - Anca G Mirea
- National Institute of Material Physics, 405 A Atomistilor Street, 077125, Magurele, Romania
| | - Mihaela Matache
- Faculty of Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
- Research Centre of Applied Organic Chemistry, University of Bucharest, 90 Panduri Street, 050663, Bucharest, Romania
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9
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Yu Y, Qu X, Li J, Huang F, Yang J. Arylazopyrazole as a photo-switch for controllable self-assembly of pillar[6]arene-based supramolecular amphiphiles. Chem Commun (Camb) 2023; 59:14265-14268. [PMID: 37961865 DOI: 10.1039/d3cc05018a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
A photo-responsive host-guest molecular recognition between a cationic pillar[6]arene host and an arylazopyrazole derived guest was established. Based on this novel recognition motif, a photo-controllable supra-amphiphile was constructed. The spontaneous aggregation can be reversibly controlled by irradiation with UV (365 nm) and green light (520 nm), leading to a switch between spherical nanoparticles and vesicle-like aggregates.
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Affiliation(s)
- Yishu Yu
- College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China.
| | - Xiaotian Qu
- College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China.
| | - Junran Li
- College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China.
| | - Feihe Huang
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China.
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China
| | - Jie Yang
- College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China.
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10
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Wu X, Yuan Y, Zhao S, Lei Y, Fu X, Lei J, Jiang L. The Synergistic Effects between Liquid Crystal and Crystalline Phase on Photo-Responsive Elastomers toward Quick Photo-Responsive Performance. Macromol Rapid Commun 2023; 44:e2300354. [PMID: 37572076 DOI: 10.1002/marc.202300354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/05/2023] [Indexed: 08/14/2023]
Abstract
Adopting only a small amount of azobenzene molecular to design liquid crystal photo-responsive materials capable of quick response and flexible adjustability is in high demand but is challenging. Herein, azobenzenemolecules into polyurethane elastomer containing crystalline structure for preparing azobenzene liquid-crystal elastomers (ALCEs) are demonstrated and this phenomenon of the synergistic effects between liquid crystal and crystalline phase is discovered. The key point of the work is that the synthetic ALCEs can utilize the reversible isomerism capability of azobenzene molecules under light irradiation, which can pry the motion of the macromolecular crystalline region in system to realize the large macroscopic deformation of the photo-responsive behavior. Obviously, the ALCEs sample containing azobenzene molecule and polyethylene glycol crystallization can quickly bend, illuminated by ultraviolet light and rapidly straighten under green light. Under the same ultraviolet irradiation, the bending speed, final bending angle, recovery rate and recovery ratio of ALCEs are larger than that of ALCEs without any crystalline structure. This ALCEs based on the synergistic effects between liquid crystal and crystalline phase can break through the current dilemma that the application of traditional azobenzene photo-responsive materials is limited by their concentration, greatly expanding the design thought and their scope of application.
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Affiliation(s)
- Xudong Wu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, P. R. China
| | - Ye Yuan
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, P. R. China
- Scientific Research Institute, Luzhou North Chemistry Industry Corporation, Luzhou, 646100, P. R. China
| | - Shiwei Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, P. R. China
| | - Yuan Lei
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, P. R. China
| | - Xiaowei Fu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, P. R. China
| | - Jingxin Lei
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, P. R. China
| | - Liang Jiang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, P. R. China
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11
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Abstract
Proteins guide the flows of information, energy, and matter that make life possible by accelerating transport and chemical reactions, by allosterically modulating these reactions, and by forming dynamic supramolecular assemblies. In these roles, conformational change underlies functional transitions. Time-resolved X-ray diffraction methods characterize these transitions either by directly triggering sequences of functionally important motions or, more broadly, by capturing the motions of which proteins are capable. To date, most successful have been experiments in which conformational change is triggered in light-dependent proteins. In this review, I emphasize emerging techniques that probe the dynamic basis of function in proteins lacking natively light-dependent transitions and speculate about extensions and further possibilities. In addition, I review how the weaker and more distributed signals in these data push the limits of the capabilities of analytical methods. Taken together, these new methods are beginning to establish a powerful paradigm for the study of the physics of protein function.
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Affiliation(s)
- Doeke R Hekstra
- Department of Molecular and Cellular Biology and School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, USA;
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12
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Nadendla K, Simpson GG, Becher J, Journeaux T, Cabeza-Cabrerizo M, Bernardes GJL. Strategies for Conditional Regulation of Proteins. JACS AU 2023; 3:344-357. [PMID: 36873677 PMCID: PMC9975842 DOI: 10.1021/jacsau.2c00654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 06/18/2023]
Abstract
Design of the next-generation of therapeutics, biosensors, and molecular tools for basic research requires that we bring protein activity under control. Each protein has unique properties, and therefore, it is critical to tailor the current techniques to develop new regulatory methods and regulate new proteins of interest (POIs). This perspective gives an overview of the widely used stimuli and synthetic and natural methods for conditional regulation of proteins.
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Affiliation(s)
- Karthik Nadendla
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, CB2 1EW, Cambridge, U.K.
| | - Grant G. Simpson
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, CB2 1EW, Cambridge, U.K.
| | - Julie Becher
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, CB2 1EW, Cambridge, U.K.
| | - Toby Journeaux
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, CB2 1EW, Cambridge, U.K.
| | - Mar Cabeza-Cabrerizo
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, CB2 1EW, Cambridge, U.K.
| | - Gonçalo J. L. Bernardes
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, CB2 1EW, Cambridge, U.K.
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
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13
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Watching the release of a photopharmacological drug from tubulin using time-resolved serial crystallography. Nat Commun 2023; 14:903. [PMID: 36807348 PMCID: PMC9936131 DOI: 10.1038/s41467-023-36481-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 02/02/2023] [Indexed: 02/19/2023] Open
Abstract
The binding and release of ligands from their protein targets is central to fundamental biological processes as well as to drug discovery. Photopharmacology introduces chemical triggers that allow the changing of ligand affinities and thus biological activity by light. Insight into the molecular mechanisms of photopharmacology is largely missing because the relevant transitions during the light-triggered reaction cannot be resolved by conventional structural biology. Using time-resolved serial crystallography at a synchrotron and X-ray free-electron laser, we capture the release of the anti-cancer compound azo-combretastatin A4 and the resulting conformational changes in tubulin. Nine structural snapshots from 1 ns to 100 ms complemented by simulations show how cis-to-trans isomerization of the azobenzene bond leads to a switch in ligand affinity, opening of an exit channel, and collapse of the binding pocket upon ligand release. The resulting global backbone rearrangements are related to the action mechanism of microtubule-destabilizing drugs.
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14
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Duan HY, Han ST, Zhan TG, Liu LJ, Zhang KD. Visible-Light-Switchable Tellurium-Based Chalcogen Bonding: Photocontrolled Anion Binding and Anion Abstraction Catalysis. Angew Chem Int Ed Engl 2023; 62:e202212707. [PMID: 36383643 DOI: 10.1002/anie.202212707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 11/17/2022]
Abstract
Exploring new noncovalent bonding motifs with reversibly tunable binding affinity is of fundamental importance in manipulating the properties and functions of supramolecular self-assembly systems and materials. Herein, for the first time, we demonstrate a unique visible-light-switchable telluro-triazole/triazolium-based chalcogen bonding (ChB) system in which the Te moieties are connected by azobenzene cores. The binding strengths between these azo-derived ChB receptors and the halide anions (Cl- , Br- ) could be reversibly regulated upon irradiation by visible light of different wavelengths. The cis-bidentate ChB receptors exhibit enhanced halide anion binding ability compared to the trans-monodentate receptors. In particular, the telluro-triazolium-based ChB receptor can achieve both high and significantly photoswitchable binding affinities for halide anions, which enable it to serve as an efficient photocontrolled organocatalyst for ChB-assisted halide abstraction in a Friedel-Crafts alkylation benchmark reaction.
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Affiliation(s)
- Hong-Ying Duan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Shi-Tao Han
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Tian-Guang Zhan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Li-Juan Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Kang-Da Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
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15
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Airinei A, Isac DL, Fifere N, Maftei D, Rusu E. Computational and experimental investigation of photoresponsive behavior of 4,4′-dihydroxyazobenzene diglycidyl ether. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2022.100709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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16
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Osthues H, Doltsinis NL. ReaxFF-based nonadiabatic dynamics method for azobenzene derivatives. J Chem Phys 2022; 157:244101. [PMID: 36586973 DOI: 10.1063/5.0129699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
ReaxFF reactive force fields have been parameterized for the ground and first excited states of azobenzene and its derivatives. In addition, an extended set of ab initio reference data ensures wide applicability, including to azosystems in complex environments. Based on the optimized force fields, nonadiabatic surface hopping simulations produce photoisomerization quantum yields and decay times of azobenzene, both in the gas phase and in n-hexane solution, in reasonable agreement with higher level theory and experiment. The transferability to other azo-compounds is illustrated for different arylazopyrazoles as well as ethylene-bridged azobenzene. Moreover, it has been shown that the model can be easily extended to adsorbates on metal surfaces. The simulation of the ring-opening of cyclobutene triggered by the photoisomerization of azobenzene in a macrocycle highlights the advantages of a reactive force field model.
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Affiliation(s)
- Helena Osthues
- Institute for Solid State Theory and Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany
| | - Nikos L Doltsinis
- Institute for Solid State Theory and Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany
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17
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Barale M, Escadeillas M, Taupier G, Molard Y, Orione C, Caytan E, Métivier R, Boixel J. Nondestructive All-Optical Readout through Photoswitching of Intramolecular Excimer Emission. J Phys Chem Lett 2022; 13:10936-10942. [PMID: 36399359 DOI: 10.1021/acs.jpclett.2c02960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
We report the first intramolecular excimer photoswitching induced by molecular motion within a dithienylethene (DTE) molecule without destructive readout. The photochromic compound DTE bears two pyrene chromophores, judiciously positioned to face each other in the DTE's open form. The close proximity of the pyrenes in the open form is confirmed by NMR experiments and geometry optimization. Intense pyrene excimer luminescence is recorded, upon both one- and two-photon excitation (OPE and TPE). The photocyclization reaction of the DTE core induces a molecular motion of one pyrene moiety which thus prevents the possibility of formation of an excimer. Our DTE-based pyrene is stable upon TPE irradiation and shows a high photocyclization quantum yield. Such property specifications allow us to report the original nondestructive readout fluorescence by alternating exposure to OPE and TPE.
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Affiliation(s)
- Marie Barale
- Université de Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UAR 2025, F-35000 Rennes, France
| | - Muriel Escadeillas
- Université de Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UAR 2025, F-35000 Rennes, France
| | - Gregory Taupier
- Université de Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UAR 2025, F-35000 Rennes, France
| | - Yann Molard
- Université de Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UAR 2025, F-35000 Rennes, France
| | - Clément Orione
- Université de Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UAR 2025, F-35000 Rennes, France
| | - Elsa Caytan
- Université de Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UAR 2025, F-35000 Rennes, France
| | - Rémi Métivier
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSMUMR 8531, 91190 Gif-sur-Yvette, France
| | - Julien Boixel
- Université de Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UAR 2025, F-35000 Rennes, France
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18
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Ali AAAI, Gulzar A, Wolf S, Stock G. Nonequilibrium Modeling of the Elementary Step in PDZ3 Allosteric Communication. J Phys Chem Lett 2022; 13:9862-9868. [PMID: 36251493 DOI: 10.1021/acs.jpclett.2c02821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
While allostery is of paramount importance for protein signaling and regulation, the underlying dynamical process of allosteric communication is not well understood. The PDZ3 domain represents a prime example of an allosteric single-domain protein, as it features a well-established long-range coupling between the C-terminal α3-helix and ligand binding. In an intriguing experiment, Hamm and co-workers employed photoswitching of the α3-helix to initiate a conformational change of PDZ3 that propagates from the C-terminus to the bound ligand within 200 ns. Performing extensive nonequilibrium molecular dynamics simulations, the modeling of the experiment reproduces the measured time scales and reveals a detailed picture of the allosteric communication in PDZ3. In particular, a correlation analysis identifies a network of contacts connecting the α3-helix and the core of the protein, which move in a concerted manner. Representing a one-step process and involving direct α3-ligand contacts, this cooperative transition is considered as the elementary step in the propagation of conformational change.
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Affiliation(s)
- Ahmed A A I Ali
- Biomolecular Dynamics, Institute of Physics, University of Freiburg, 79104Freiburg, Germany
| | - Adnan Gulzar
- Biomolecular Dynamics, Institute of Physics, University of Freiburg, 79104Freiburg, Germany
| | - Steffen Wolf
- Biomolecular Dynamics, Institute of Physics, University of Freiburg, 79104Freiburg, Germany
| | - Gerhard Stock
- Biomolecular Dynamics, Institute of Physics, University of Freiburg, 79104Freiburg, Germany
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19
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Zhu H, Li Q. Understanding of Photo‐Induced Reversible Rearrangement from Borepin to Borirane. Chemistry 2022; 28:e202201360. [DOI: 10.1002/chem.202201360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Hong‐Yang Zhu
- Key Laboratory of Cluster Science of Ministry of Education Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical Engineering Beijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 P. R. China
| | - Quan‐Song Li
- Key Laboratory of Cluster Science of Ministry of Education Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical Engineering Beijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 P. R. China
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20
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Feng Z, Ducos B, Scerbo P, Aujard I, Jullien L, Bensimon D. The Development and Application of Opto-Chemical Tools in the Zebrafish. Molecules 2022; 27:6231. [PMID: 36234767 PMCID: PMC9572478 DOI: 10.3390/molecules27196231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 11/18/2022] Open
Abstract
The zebrafish is one of the most widely adopted animal models in both basic and translational research. This popularity of the zebrafish results from several advantages such as a high degree of similarity to the human genome, the ease of genetic and chemical perturbations, external fertilization with high fecundity, transparent and fast-developing embryos, and relatively low cost-effective maintenance. In particular, body translucency is a unique feature of zebrafish that is not adequately obtained with other vertebrate organisms. The animal's distinctive optical clarity and small size therefore make it a successful model for optical modulation and observation. Furthermore, the convenience of microinjection and high embryonic permeability readily allow for efficient delivery of large and small molecules into live animals. Finally, the numerous number of siblings obtained from a single pair of animals offers large replicates and improved statistical analysis of the results. In this review, we describe the development of opto-chemical tools based on various strategies that control biological activities with unprecedented spatiotemporal resolution. We also discuss the reported applications of these tools in zebrafish and highlight the current challenges and future possibilities of opto-chemical approaches, particularly at the single cell level.
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Affiliation(s)
- Zhiping Feng
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA 94305, USA
| | - Bertrand Ducos
- Laboratoire de Physique de l’Ecole Normale Supérieure, Paris Sciences Letters University, Sorbonne Université, Université de Paris, Centre National de la Recherche Scientifique, 24 Rue Lhomond, 75005 Paris, France
- High Throughput qPCR Core Facility, Ecole Normale Supérieure, Paris Sciences Letters University, 46 Rue d’Ulm, 75005 Paris, France
| | - Pierluigi Scerbo
- Laboratoire de Physique de l’Ecole Normale Supérieure, Paris Sciences Letters University, Sorbonne Université, Université de Paris, Centre National de la Recherche Scientifique, 24 Rue Lhomond, 75005 Paris, France
- Inovarion, 75005 Paris, France
| | - Isabelle Aujard
- Laboratoire PASTEUR, Département de Chimie, Ecole Normale Supérieure, Paris Sciences Letters University, Sorbonne Université, Centre National de la Recherche Scientifique, 24 Rue Lhomond, 75005 Paris, France
| | - Ludovic Jullien
- Laboratoire PASTEUR, Département de Chimie, Ecole Normale Supérieure, Paris Sciences Letters University, Sorbonne Université, Centre National de la Recherche Scientifique, 24 Rue Lhomond, 75005 Paris, France
| | - David Bensimon
- Laboratoire de Physique de l’Ecole Normale Supérieure, Paris Sciences Letters University, Sorbonne Université, Université de Paris, Centre National de la Recherche Scientifique, 24 Rue Lhomond, 75005 Paris, France
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA
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21
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Saura-Sanmartin A. Photoresponsive Metal-Organic Frameworks as Adjustable Scaffolds in Reticular Chemistry. Int J Mol Sci 2022; 23:7121. [PMID: 35806126 PMCID: PMC9266399 DOI: 10.3390/ijms23137121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 02/04/2023] Open
Abstract
The easy and remote switching of light makes this stimulus an ideal candidate for a large number of applications, among which the preparation of photoresponsive materials stands out. The interest of several scientists in this area in order to achieve improved functionalities has increase parallel to the growth of the structural complexity of these materials. Thus, metal-organic frameworks (MOFs) turned out to be ideal scaffolds for light-responsive ligands. This review is focused on the integration of photoresponsive organic ligands inside MOF crystalline arrays to prepare enhanced functional materials. Besides the summary of the preparation, properties and applications of these materials, an overview of the future outlook of this research area is provided.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Química Orgánica, Facultad de Química, Campus de Espinardo, Universidad de Murcia, E-30100 Murcia, Spain
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22
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Liu R, Zhang X, Xia F, Dai Y. Azobenzene-based photoswitchable catalysts: State of the art and perspectives. J Catal 2022. [DOI: 10.1016/j.jcat.2022.03.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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23
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Heckmeier PJ, Ruf J, Buhrke D, Janković BG, Hamm P. Signal propagation within the MCL-1/BIM protein complex. J Mol Biol 2022; 434:167499. [DOI: 10.1016/j.jmb.2022.167499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/24/2022] [Accepted: 02/07/2022] [Indexed: 11/26/2022]
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24
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Rouxel JR, Keefer D, Aleotti F, Nenov A, Garavelli M, Mukamel S. Coupled Electronic and Nuclear Motions during Azobenzene Photoisomerization Monitored by Ultrafast Electron Diffraction. J Chem Theory Comput 2022; 18:605-613. [DOI: 10.1021/acs.jctc.1c00792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jérémy R. Rouxel
- Department of Chemistry and Physics & Astronomy, University of California, Irvine, California 92697-2025, United States
- Univ Lyon, UJM-Saint-Etienne, CNRS, Graduate School Optics Institute, Laboratoire Hubert Curien UMR 5516, Saint-Etienne, F-42023, France
| | - Daniel Keefer
- Department of Chemistry and Physics & Astronomy, University of California, Irvine, California 92697-2025, United States
| | - Flavia Aleotti
- Dipartimento di Chimica Industriale, Universitá degli Studi di Bologna, Viale del Risorgimento 4, Bologna, I-40136, Italy
| | - Artur Nenov
- Dipartimento di Chimica Industriale, Universitá degli Studi di Bologna, Viale del Risorgimento 4, Bologna, I-40136, Italy
| | - Marco Garavelli
- Dipartimento di Chimica Industriale, Universitá degli Studi di Bologna, Viale del Risorgimento 4, Bologna, I-40136, Italy
| | - Shaul Mukamel
- Department of Chemistry and Physics & Astronomy, University of California, Irvine, California 92697-2025, United States
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