1
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Csányi E, Hammond DB, Bower B, Johnson EC, Lishchuk A, Armes SP, Dong Z, Leggett GJ. XPS Depth-Profiling Studies of Chlorophyll Binding to Poly(cysteine methacrylate) Scaffolds in Pigment-Polymer Antenna Complexes Using a Gas Cluster Ion Source. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:14527-14539. [PMID: 38954522 PMCID: PMC11256746 DOI: 10.1021/acs.langmuir.4c01361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 06/12/2024] [Accepted: 06/17/2024] [Indexed: 07/04/2024]
Abstract
X-ray photoelectron spectroscopy (XPS) depth-profiling with an argon gas cluster ion source (GCIS) was used to characterize the spatial distribution of chlorophyll a (Chl) within a poly(cysteine methacrylate) (PCysMA) brush grown by surface-initiated atom-transfer radical polymerization (ATRP) from a planar surface. The organization of Chl is controlled by adjusting the brush grafting density and polymerization time. For dense brushes, the C, N, S elemental composition remains constant throughout the 36 nm brush layer until the underlying gold substrate is approached. However, for either reduced density brushes (mean thickness ∼20 nm) or mushrooms grown with reduced grafting densities (mean thickness 6-9 nm), elemental intensities decrease continuously throughout the brush layer, because photoelectrons are less strongly attenuated for such systems. For all brushes, the fraction of positively charged nitrogen atoms (N+/N0) decreases with increasing depth. Chl binding causes a marked reduction in N+/N0 within the brushes and produces a new feature at 398.1 eV in the N1s core-line spectrum assigned to tetrapyrrole ring nitrogen atoms coordinated to Zn2+. For all grafting densities, the N/S atomic ratio remains approximately constant as a function of brush depth, which indicates a uniform distribution of Chl throughout the brush layer. However, a larger fraction of repeat units bound to Chl is observed at lower grafting densities, reflecting a progressive reduction in steric congestion that enables more uniform distribution of the bulky Chl units throughout the brush layer. In summary, XPS depth-profiling using a GCIS is a powerful tool for characterization of these complex materials.
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Affiliation(s)
- Evelin Csányi
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
- Institute
of Materials Research and Engineering, A*STAR
(Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-03 Innovis, 138634 Singapore
| | - Deborah B. Hammond
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
| | - Benjamin Bower
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
| | - Edwin C. Johnson
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
| | - Anna Lishchuk
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
| | - Steven P. Armes
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
| | - Zhaogang Dong
- Institute
of Materials Research and Engineering, A*STAR
(Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-03 Innovis, 138634 Singapore
| | - Graham J. Leggett
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
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2
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Dewa T, Kimoto K, Kasagi G, Harada H, Sumino A, Kondo M. Functional Coupling of Biohybrid Photosynthetic Antennae and Reaction Center Complexes: Quantitative Comparison with Native Antennae. J Phys Chem B 2023; 127:10315-10325. [PMID: 38015096 DOI: 10.1021/acs.jpcb.3c04922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Light-harvesting (LH) complexes in photosynthetic organisms absorb photons within limited wavelength ranges over a broad solar spectrum. Extension of the LH wavelength has been realized by attaching artificial fluorophores to LH complexes (biohybrid LH complexes) for complementing the limited-wavelength regions. However, how efficiently such fluorophores in biohybrid LH complexes function to drive the photocatalytic reaction center (RC) has not been quantitatively evaluated, specifically in comparison with native LH antenna complexes. In this study, we prepared various biohybrid LH1-RC complexes (from Rhodopseudomonas palustris), to quantitatively evaluate the LH activity of the attached external chromophores through a photocurrent generation reaction by LH1-RC on an electrode. For a direct comparison of the LH activity among the LH chromophores that were examined, we introduced the k1 term, which represents the extent of the functional coupling of LH and the photochemical reactions in the RC. We determined that the hydrophobic fluorophore ATTO647N attached to LH1 possesses the highest LH activity among the examined hydrophilic fluorophores such as Alexa647, and its activity is comparable to that of native LH1(-RC). The LH activity of LH2 (from Rhodoblastus acidophilus strain 10050) and its biohybrid LH2s were examined for the comprehensive assessment of their LH activity.
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Affiliation(s)
- Takehisa Dewa
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Komei Kimoto
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Genki Kasagi
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Hiromi Harada
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Ayumi Sumino
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Masaharu Kondo
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
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3
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Hancock AM, Swainsbury DJK, Meredith SA, Morigaki K, Hunter CN, Adams PG. Enhancing the spectral range of plant and bacterial light-harvesting pigment-protein complexes with various synthetic chromophores incorporated into lipid vesicles. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 237:112585. [PMID: 36334507 DOI: 10.1016/j.jphotobiol.2022.112585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/16/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022]
Abstract
The Light-Harvesting (LH) pigment-protein complexes found in photosynthetic organisms have the role of absorbing solar energy with high efficiency and transferring it to reaction centre complexes. LH complexes contain a suite of pigments that each absorb light at specific wavelengths, however, the natural combinations of pigments within any one protein complex do not cover the full range of solar radiation. Here, we provide an in-depth comparison of the relative effectiveness of five different organic "dye" molecules (Texas Red, ATTO, Cy7, DiI, DiR) for enhancing the absorption range of two different LH membrane protein complexes (the major LHCII from plants and LH2 from purple phototrophic bacteria). Proteoliposomes were self-assembled from defined mixtures of lipids, proteins and dye molecules and their optical properties were quantified by absorption and fluorescence spectroscopy. Both lipid-linked dyes and alternative lipophilic dyes were found to be effective excitation energy donors to LH protein complexes, without the need for direct chemical or generic modification of the proteins. The Förster theory parameters (e.g., spectral overlap) were compared between each donor-acceptor combination and found to be good predictors of an effective dye-protein combination. At the highest dye-to-protein ratios tested (over 20:1), the effective absorption strength integrated over the full spectral range was increased to ∼180% of its natural level for both LH complexes. Lipophilic dyes could be inserted into pre-formed membranes although their effectiveness was found to depend upon favourable physicochemical interactions. Finally, we demonstrated that these dyes can also be effective at increasing the spectral range of surface-supported models of photosynthetic membranes, using fluorescence microscopy. The results of this work provide insight into the utility of self-assembled lipid membranes and the great flexibility of LH complexes for interacting with different dyes.
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Affiliation(s)
- Ashley M Hancock
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK; Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - David J K Swainsbury
- School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK; School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - Sophie A Meredith
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK; Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Kenichi Morigaki
- Graduate School of Agricultural Science and Biosignal Research Center, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan
| | - C Neil Hunter
- School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Peter G Adams
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK; Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK.
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4
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Yoneda Y, Noji T, Mizutani N, Kato D, Kondo M, Miyasaka H, Nagasawa Y, Dewa T. Energy transfer dynamics and the mechanism of biohybrid photosynthetic antenna complexes chemically linked with artificial chromophores. Phys Chem Chem Phys 2022; 24:24714-24726. [PMID: 36128743 DOI: 10.1039/d2cp02465a] [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
A light-harvesting strategy is crucial for the utilisation of solar energy. In this study, we addressed the expanding light-harvesting (LH) wavelength of photosynthetic LH complex 2 (LH2, from Rhodoblastus acidophilus strain 10050) through covalent conjugation with extrinsic chromophores. To further understand the conjugation architecture and mechanism of excitation energy transfer (EET), we examined the effects of the linker length and spectral overlap integral between the emission and absorption spectra of the energy donor and acceptor pigments. In the former case, contrary to the intuition based on the Förster resonance energy transfer (FRET) theory, the observed energy transfer rate was similar regardless of the linker length, and the energy transfer efficiency increased with longer linkers. In the latter case, despite the energy transfer rate increases at higher spectral overlaps, it was quantitatively inconsistent with the FRET theory. The mechanism of EET beyond the FRET theory was discussed in terms of the higher-lying exciton state of B850, which mediates efficient EET despite the small spectral overlap. This systematic investigation provides insights for the development of efficient artificial photosynthetic systems.
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Affiliation(s)
- Yusuke Yoneda
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.,Research Center of Integrative Molecular Systems, Institute for Molecular Science, National Institute of Natural Sciences, Okazaki, Aichi, 444-8585, Japan.
| | - Tomoyasu Noji
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan.
| | - Naoto Mizutani
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan.
| | - Daiji Kato
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan.
| | - Masaharu Kondo
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan.
| | - Hiroshi Miyasaka
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Yutaka Nagasawa
- College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan.
| | - Takehisa Dewa
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan.
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5
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Yoneda Y, Kito M, Mori D, Goto A, Kondo M, Miyasaka H, Nagasawa Y, Dewa T. Ultrafast Energy Transfer between Self-Assembled Fluorophore and Photosynthetic Light-Harvesting Complex 2 (LH2) in Lipid Bilayer. J Chem Phys 2022; 156:095101. [DOI: 10.1063/5.0077910] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | | | | | | | - Masaharu Kondo
- Life Science and Applied Chemistry, Nagoya Institute of Technology, Japan
| | - Hiroshi Miyasaka
- Frontier Materials Science, Osaka University Graduate School of Engineering Science School of Engineering Science, Japan
| | - Yutaka Nagasawa
- College of Lifesciences, Ritsumeikan University College of Life Sciences Graduate School of Life Sciences, Japan
| | - Takehisa Dewa
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Japan
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6
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Mohan EC, Atoyebi AO, Bruckner C. Studies on the mechanochemically induced chromene-annulation of meso-tetrakis(pentafluorophenyl)-2,3-dihydroxychlorin: Non-innocence of the grinding aids. J PORPHYR PHTHALOCYA 2022. [DOI: 10.1142/s1088424622500122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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Hancock AM, Son M, Nairat M, Wei T, Jeuken LJC, Duffy CDP, Schlau-Cohen GS, Adams PG. Ultrafast energy transfer between lipid-linked chromophores and plant light-harvesting complex II. Phys Chem Chem Phys 2021; 23:19511-19524. [PMID: 34524278 PMCID: PMC8442836 DOI: 10.1039/d1cp01628h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Light-Harvesting Complex II (LHCII) is a membrane protein found in plant chloroplasts that has the crucial role of absorbing solar energy and subsequently performing excitation energy transfer to the reaction centre subunits of Photosystem II. LHCII provides strong absorption of blue and red light, however, it has minimal absorption in the green spectral region where solar irradiance is maximal. In a recent proof-of-principle study, we enhanced the absorption in this spectral range by developing a biohybrid system where LHCII proteins together with lipid-linked Texas Red (TR) chromophores were assembled into lipid membrane vesicles. The utility of these systems was limited by significant LHCII quenching due to protein-protein interactions and heterogeneous lipid structures. Here, we organise TR and LHCII into a lipid nanodisc, which provides a homogeneous, well-controlled platform to study the interactions between TR molecules and single LHCII complexes. Fluorescence spectroscopy determined that TR-to-LHCII energy transfer has an efficiency of at least 60%, resulting in a 262% enhancement of LHCII fluorescence in the 525-625 nm range, two-fold greater than in the previous system. Ultrafast transient absorption spectroscopy revealed two time constants of 3.7 and 128 ps for TR-to-LHCII energy transfer. Structural modelling and theoretical calculations indicate that these timescales correspond to TR-lipids that are loosely- or tightly-associated with the protein, respectively, with estimated TR-to-LHCII separations of ∼3.5 nm and ∼1 nm. Overall, we demonstrate that a nanodisc-based biohybrid system provides an idealised platform to explore the photophysical interactions between extrinsic chromophores and membrane proteins with potential applications in understanding more complex natural or artificial photosynthetic systems.
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Affiliation(s)
- Ashley M Hancock
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK. .,Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Minjung Son
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA.
| | - Muath Nairat
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA.
| | - Tiejun Wei
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Lars J C Jeuken
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK.,Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.,Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
| | - Christopher D P Duffy
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Gabriela S Schlau-Cohen
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA.
| | - Peter G Adams
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK. .,Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
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8
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Saga Y, Otsuka Y, Tanaka A, Masaoka Y, Hidaka T, Nagasawa Y. Energy Transfer Dynamics in Light-Harvesting Complex 2 Variants Containing Oxidized B800 Bacteriochlorophyll a. J Phys Chem B 2021; 125:6830-6836. [PMID: 34139847 DOI: 10.1021/acs.jpcb.1c01592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Excitation energy transfer (EET) in light-harvesting proteins is vital for photosynthetic activities. The pigment compositions and their organizations in these proteins are responsible for the EET functions. Thus, changing the pigment compositions in light-harvesting proteins contributes to a better understanding of EET mechanisms. In this study, we investigated the EET dynamics of two light-harvesting complex 2 (LH2) variants, in which nine B800 bacteriochlorophyll (BChl) a pigments were entirely or half converted to 3-acetyl chlorophyll (AcChl) a. The AcChl a pigments showed a Qy band, which was blue-shifted by 107 nm from B800 BChl a in the two variants. EET from AcChl a to B850 BChl a was observed in both fully oxidized and half-oxidized LH2 variants, but the EET rates were lower than that from B800 to B850 BChl a. EET from AcChl a to the co-present B800 was barely detected in the half-oxidized LH2. The preferential EET from AcChl a to B850 instead of B800 was rationalized by little spectral overlap of AcChl a with B800 BChl a and the pigment geometry in the protein. The EET rate from B800 to B850 BChl a in the half-oxidized LH2 was analogous to that in native LH2, indicating that partial oxidation of B800 did not disturb the EET channel from the residual B800 to B850.
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Affiliation(s)
- Yoshitaka Saga
- Department of Chemistry, Faculty of Science and Engineering, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Yuji Otsuka
- Department of Chemistry, Faculty of Science and Engineering, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Aiko Tanaka
- Department of Chemistry, Faculty of Science and Engineering, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Yuto Masaoka
- Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Tsubasa Hidaka
- Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Yutaka Nagasawa
- Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
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9
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Morimoto A, Hosokawa Y, Miyamoto H, Verma RK, Iwai S, Sato R, Yamamoto J. Key interactions with deazariboflavin cofactor for light-driven energy transfer in Xenopus (6-4) photolyase. Photochem Photobiol Sci 2021; 20:875-887. [PMID: 34120300 DOI: 10.1007/s43630-021-00065-3] [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: 02/26/2021] [Accepted: 06/03/2021] [Indexed: 10/21/2022]
Abstract
Photolyases are flavoenzymes responsible for light-driven repair of carcinogenic crosslinks formed in DNA by UV exposure. They possess two non-covalently bound chromophores: flavin adenine dinucleotide (FAD) as a catalytic center and an auxiliary antenna chromophore that harvests photons and transfers solar energy to the catalytic center. Although the energy transfer reaction has been characterized by time-resolved spectroscopy, it is strikingly important to understand how well natural biological systems organize the chromophores for the efficient energy transfer. Here, we comprehensively characterized the binding of 8-hydroxy-7,8-didemethyl-5-deazariboflavin (8-HDF) to Xenopus (6-4) photolyase. In silico simulations indicated that a hydrophobic amino acid residue located at the entrance of the binding site dominates translocation of a loop upon binding of 8-HDF, and a mutation of this residue caused dysfunction of the efficient energy transfer in the DNA repair reaction. Mutational analyses of the protein combined with modification of the chromophore suggested that Coulombic interactions between positively charged residues in the protein and the phenoxide moiety in 8-HDF play a key role in accommodation of 8-HDF in the proper direction. This study provides a clear evidence that Xenopus (6-4) photolyase can utilize 8-HDF as the light-harvesting chromophore. The obtained new insights into binding of the natural antenna molecule will be helpful for the development of artificial light-harvesting chromophores and future characterization of the energy transfer in (6-4) photolyase by spectroscopic studies.
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Affiliation(s)
- Ayaka Morimoto
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
| | - Yuhei Hosokawa
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
| | - Hiromu Miyamoto
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
| | - Rajiv Kumar Verma
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan.,Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Shigenori Iwai
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
| | - Ryuma Sato
- Center for Biosystems Dynamics Research, RIKEN, 6-2-3 Furuedai, Suita, Osaka, 565-0874, Japan.,Cellular and Molecular Biotechnology Research and Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-3-26 Aomi, Koto-ku, Tokyo, 135-0064, Japan
| | - Junpei Yamamoto
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan.
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10
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Lone MS, Bhat PA, Afzal S, Chat OA, Dar AA. Energy transduction through FRET in self-assembled soft nanostructures based on surfactants/polymers: current scenario and prospects. SOFT MATTER 2021; 17:425-446. [PMID: 33400748 DOI: 10.1039/d0sm01625j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The self-assembled systems of surfactants/polymers, which are capable of supporting energy funneling between fluorophores, have recently gained significant attraction. Surfactant and polymeric micelles form nanoscale structures spanning a radius of 2-10 nm are generally suitable for the transduction of energy among fluorophores. These systems have shown great potential in Förster resonance energy transfer (FRET) due to their unique characteristics of being aqueous based, tendency to remain self-assembled, spontaneous formation, tunable nature, and responsiveness to different external stimuli. This review presents current developments in the field of energy transfer, particularly the multi-step FRET processes in the self-assembled nanostructures of surfactants/polymers. The part one of this review presents a background and brief overview of soft systems and discusses certain aspects of the self-assemblies of surfactants/polymers and their co-solubilization property to bring fluorophores to close proximity to transduce energy. The second part of this review deals with single-step and multi-step FRET in the self-assemblies of surfactants/polymers and links FRET systems with advanced smart technologies including multicolor formation, data encryption, and artificial antenna systems. This review also discusses the diverse examples in the literature to present the emerging applications of FRET. Finally, the prospects regarding further improvement of FRET in self-assembled soft systems are outlined.
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Affiliation(s)
- Mohd Sajid Lone
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
| | - Parvaiz Ahmad Bhat
- Department of Chemistry, Government Degree College, Pulwama-192301, J&K, India.
| | - Saima Afzal
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
| | - Oyais Ahmad Chat
- Department of Chemistry, Government Degree College, Pulwama-192301, J&K, India.
| | - Aijaz Ahmad Dar
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
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11
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Kasagi G, Yoneda Y, Kondo M, Miyasaka H, Nagasawa Y, Dewa T. Enhanced light harvesting and photocurrent generation activities of biohybrid light–harvesting 1–reaction center core complexes (LH1-RCs) from Rhodopseudomonas palustris. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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12
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Huang X, Vasilev C, Hunter CN. Excitation energy transfer between monomolecular layers of light harvesting LH2 and LH1-reaction centre complexes printed on a glass substrate. LAB ON A CHIP 2020; 20:2529-2538. [PMID: 32662473 DOI: 10.1039/d0lc00156b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Light-harvesting 2 (LH2) and light-harvesting 1 - reaction centre (RCLH1) complexes purified from the photosynthetic bacterium Rhodobacter (Rba.) sphaeroides were cross-patterned on glass surfaces for energy transfer studies. Atomic force microscopy (AFM) images of the RCLH1 and LH2 patterns show the deposition of monomolecular layers of complexes on the glass substrate. Spectral imaging and fluorescence life-time imaging microscopy (FLIM) revealed that RCLH1 and LH2 complexes, sealed under physiological conditions, retained their native light-harvesting and energy transfer functions. Measurements of the amplitude and lifetime decay of fluorescence emission from LH2 complexes, the energy transfer donors, and gain of fluorescence emission from acceptor RCLH1 complexes, provide evidence for excitation energy transfer from LH2 to RCLH1. Directional energy transfer on the glass substrate was unequivocally established by using LH2-carotenoid complexes and RCLH1 complexes with genetically removed carotenoids. Specific excitation of carotenoids in donor LH2 complexes elicited fluorescence emission from RCLH1 acceptors. To explore the longevity of this novel nanoprinted photosynthetic unit, RCLH1 and LH2 complexes were cross-patterned on a glass surface and sealed under a protective argon atmosphere. The results show that both complexes retained their individual and collective functions and are capable of directional excitation energy transfer for at least 60 days.
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Affiliation(s)
- Xia Huang
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK.
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13
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Effects of palladium ions on light-harvesting complex 2 lacking B800 bacteriochlorophyll a. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Saga Y, Yamashita M, Imanishi M, Kimura Y, Masaoka Y, Hidaka T, Nagasawa Y. Reconstitution of 3-Acetyl Chlorophyll a into Light-Harvesting Complex 2 from the Purple Photosynthetic Bacterium Phaeospirillum molischianum. ACS OMEGA 2020; 5:6817-6825. [PMID: 32258917 PMCID: PMC7114761 DOI: 10.1021/acsomega.0c00152] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 03/06/2020] [Indexed: 06/11/2023]
Abstract
The manipulation of B800 bacteriochlorophyll (BChl) a in light-harvesting complex 2 (LH2) from the purple photosynthetic bacterium Phaeospirillum molischianum (molischianum-LH2) provides insight for understanding the energy transfer mechanism and the binding of cyclic tetrapyrroles in LH2 proteins since molischianum-LH2 is one of the two LH2 proteins whose atomic-resolution structures have been determined and is a representative of type-2 LH2 proteins. However, there is no report on the substitution of B800 BChl a in molischianum-LH2. We report the reconstitution of 3-acetyl chlorophyll (AcChl) a, which has a 17,18-dihydroporphyrin skeleton, to the B800 site in molischianum-LH2. The 3-acetyl group in AcChl a formed a hydrogen bond with β'-Thr23 in essentially the same manner as native B800 BChl a, but this hydrogen bond was weaker than that of B800 BChl a. This change can be rationalized by invoking a small distortion in the orientation of the 3-acetyl group in the B800 cavity by dehydrogenation in the B-ring from BChl a. The energy transfer from AcChl a in the B800 site to B850 BChl a was about 5-fold slower than that from native B800 BChl a by a decrease of the spectral overlap between energy-donating AcChl a and energy-accepting B850 BChl a.
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Affiliation(s)
- Yoshitaka Saga
- Department
of Chemistry, Faculty of Science and Engineering, Kindai University, Higashi-Osaka 577-8502, Osaka, Japan
| | - Madoka Yamashita
- Department
of Chemistry, Faculty of Science and Engineering, Kindai University, Higashi-Osaka 577-8502, Osaka, Japan
| | - Michie Imanishi
- Graduate
School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Yukihiro Kimura
- Graduate
School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Yuto Masaoka
- Graduate
School of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Shiga, Japan
| | - Tsubasa Hidaka
- Graduate
School of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Shiga, Japan
| | - Yutaka Nagasawa
- Graduate
School of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Shiga, Japan
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15
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Yang W, Jo J, Oh H, Lee H, Chung WJ, Seo J. Peptoid Helix Displaying Flavone and Porphyrin: Synthesis and Intramolecular Energy Transfer. J Org Chem 2020; 85:1392-1400. [PMID: 31657570 DOI: 10.1021/acs.joc.9b02358] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Natural light-harvesting complexes (LHCs) absorb a broad spectrum of sunlight using a collection of photosynthetic pigments whose spatial arrangement is controlled by a protein matrix and exhibit efficient energy transfer. We constructed a novel light-harvesting protein mimic, which absorbs light in the UV to visible region (280-700 nm) by displaying flavone and porphyrin on a peptoid helix. First, an efficient synthesis of 4'-derivatized 7-methoxyflavone (7-MF, 3 and 4) was developed. The flavone-porphyrin-peptoid conjugate (FPPC) was then prepared via Miyaura borylation on a resin-bound peptoid followed by Suzuki coupling between the peptoid and pigment. Circular dichroism spectroscopy indicated that the FPPC underwent helix-to-loop conversion of the peptoid scaffold upon changing the solvent conditions. A distinct intramolecular energy transfer was observed from 7-MF to porphyrin with greater efficiency in the helix than that in the loop conformation of the peptoid, whereas no clear evidence of energy transfer was obtained for unstructured FPPC. We thus demonstrate the value of the helical peptoid, which provided a controlled orientation for 7-MF and porphyrin and modulated the energy transfer efficiency via conformational switching. Our work provides a way to construct a sophisticated LHC mimic with enhanced coverage of the solar spectrum and controllable energy transfer efficiency.
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Affiliation(s)
- Woojin Yang
- Department of Chemistry, School of Physics and Chemistry , Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro , Buk-gu, Gwangju 61005 , South Korea
| | - Junhyuk Jo
- Department of Chemistry, School of Physics and Chemistry , Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro , Buk-gu, Gwangju 61005 , South Korea
| | - Hyeongyeol Oh
- Department of Chemistry, School of Physics and Chemistry , Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro , Buk-gu, Gwangju 61005 , South Korea
| | - Hohjai Lee
- Department of Chemistry, School of Physics and Chemistry , Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro , Buk-gu, Gwangju 61005 , South Korea
| | - Won-Jin Chung
- Department of Chemistry, School of Physics and Chemistry , Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro , Buk-gu, Gwangju 61005 , South Korea
| | - Jiwon Seo
- Department of Chemistry, School of Physics and Chemistry , Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro , Buk-gu, Gwangju 61005 , South Korea
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16
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Im SW, Ha H, Yang W, Jang JH, Kang B, Seo DH, Seo J, Nam KT. Light polarization dependency existing in the biological photosystem and possible implications for artificial antenna systems. PHOTOSYNTHESIS RESEARCH 2020; 143:205-220. [PMID: 31643017 DOI: 10.1007/s11120-019-00682-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 10/02/2019] [Indexed: 06/10/2023]
Abstract
The processes of biological photosynthesis provide inspiration and valuable lessons for artificial energy collection, transfer, and conversion systems. The extraordinary efficiency of each sequential process of light to biomass conversion originates from the unique architecture and mechanism of photosynthetic proteins. Near 100% quantum efficiency of energy transfer in biological photosystems is achieved by the chlorophyll assemblies in antenna complexes, which also exhibit a significant degree of light polarization. The three-dimensional chiral assembly of chlorophylls is an optimized biological architecture that enables maximum energy transfer efficiency with precisely designed coupling between chlorophylls. In this review, we summarize the key lessons from the photosynthetic processes in biological photosystems, and move our focus to energy transfer mechanisms and the chiral structure of the chlorophyll assembly. Then, we introduce recent approaches and possible implications to realize the biological energy transfer processes on bioinspired scaffold-based artificial antenna systems.
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Affiliation(s)
- Sang Won Im
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea
| | - Heonjin Ha
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea
| | - Woojin Yang
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology, Gwangju, 61005, South Korea
| | - Jun Ho Jang
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea
| | - Boyeong Kang
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology, Gwangju, 61005, South Korea
| | - Da Hye Seo
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea
| | - Jiwon Seo
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology, Gwangju, 61005, South Korea.
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea.
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17
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Yoneda Y, Kato D, Kondo M, Nagashima KVP, Miyasaka H, Nagasawa Y, Dewa T. Sequential energy transfer driven by monoexponential dynamics in a biohybrid light-harvesting complex 2 (LH2). PHOTOSYNTHESIS RESEARCH 2020; 143:115-128. [PMID: 31620983 DOI: 10.1007/s11120-019-00677-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 09/24/2019] [Indexed: 06/10/2023]
Abstract
Enhancing the light-harvesting potential of antenna components in a system of solar energy conversion is an important topic in the field of artificial photosynthesis. We constructed a biohybrid light-harvesting complex 2 (LH2) engineered from Rhodobacter sphaeroides IL106 strain. An artificial fluorophore Alexa Fluor 647 maleimide (A647) was attached to the LH2 bearing cysteine residue at the N-terminal region (LH2-NC) near B800 bacteriochlorophyll a (BChl) assembly. The A647-attached LH2-NC conjugate (LH2-NC-A647) preserved the integrity of the intrinsic chromophores, B800- and B850-BChls, and carotenoids. Femtosecond transient absorption spectroscopy revealed that the sequential energy transfer A647 → B800 → B850 occurs at time scale of 9-10 ps with monoexponential dynamics in micellar and lipid bilayer systems. A B800-removed conjugate (LH2-NC[B800(-)]-A647) exhibited a significant decrease in energy transfer efficiency in the micellar system; however, surprisingly, direct energy transfer from A647 to B850 was observed at a rate comparable to that for LH2-NC-A647. This result implies that the energy transfer pathway is modified after B800 removal. The results obtained suggested that a LH2 complex is a potential platform for construction of biohybrid light-harvesting materials with simple energy transfer dynamics through the site-selective attachment of the external antennae and the modifiable energy-funnelling pathway.
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Affiliation(s)
- Yusuke Yoneda
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Daiji Kato
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi, 466-8555, Japan
| | - Masaharu Kondo
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi, 466-8555, Japan
| | - Kenji V P Nagashima
- Research Institute for Integrated Science, Kanagawa University, Kanagawa, 259-1293, Japan
| | - Hiroshi Miyasaka
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Yutaka Nagasawa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan.
| | - Takehisa Dewa
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi, 466-8555, Japan.
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18
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Hancock AM, Meredith SA, Connell SD, Jeuken LJC, Adams PG. Proteoliposomes as energy transferring nanomaterials: enhancing the spectral range of light-harvesting proteins using lipid-linked chromophores. NANOSCALE 2019; 11:16284-16292. [PMID: 31465048 DOI: 10.1039/c9nr04653d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Bio-hybrid nanomaterials have great potential for combining the most desirable aspects of biomolecules and the contemporary concepts of nanotechnology to create highly efficient light-harvesting materials. Light-harvesting proteins are optimized to absorb and transfer solar energy with remarkable efficiency but have a spectral range that is limited by their natural pigment complement. Herein, we present the development of model membranes ("proteoliposomes") in which the absorption range of the membrane protein Light-Harvesting Complex II (LHCII) is effectively enhanced by the addition of lipid-tethered Texas Red (TR) chromophores. Energy transfer from TR to LHCII is observed with up to 94% efficiency and increased LHCII fluorescence of up to three-fold when excited in the region of lowest natural absorption. The new self-assembly procedure offers the modularity to control the concentrations incorporated of TR and LHCII, allowing energy transfer and fluorescence to be tuned. Fluorescence Lifetime Imaging Microscopy provides single-proteoliposome-level quantification of energy transfer efficiency and confirms that functionality is retained on surfaces. Designer proteoliposomes could act as a controllable light-harvesting nanomaterial and are a promising step in the development of bio-hybrid light-harvesting systems.
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Affiliation(s)
- Ashley M Hancock
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK. and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Sophie A Meredith
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK. and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Simon D Connell
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK. and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Lars J C Jeuken
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK and School of Biomedical Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Peter G Adams
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK. and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
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19
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Xu L, Wang Z, Wang R, Wang L, He X, Jiang H, Tang H, Cao D, Tang BZ. A Conjugated Polymeric Supramolecular Network with Aggregation‐Induced Emission Enhancement: An Efficient Light‐Harvesting System with an Ultrahigh Antenna Effect. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907678] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Linxian Xu
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Zaiyu Wang
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong Hong Kong
| | - Rongrong Wang
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Lingyun Wang
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Xuewen He
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong Hong Kong
| | - Huanfeng Jiang
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Hao Tang
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Derong Cao
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Ben Zhong Tang
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong Hong Kong
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20
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Xu L, Wang Z, Wang R, Wang L, He X, Jiang H, Tang H, Cao D, Tang BZ. A Conjugated Polymeric Supramolecular Network with Aggregation‐Induced Emission Enhancement: An Efficient Light‐Harvesting System with an Ultrahigh Antenna Effect. Angew Chem Int Ed Engl 2019; 59:9908-9913. [DOI: 10.1002/anie.201907678] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Linxian Xu
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Zaiyu Wang
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong Hong Kong
| | - Rongrong Wang
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Lingyun Wang
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Xuewen He
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong Hong Kong
| | - Huanfeng Jiang
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Hao Tang
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Derong Cao
- State Key Laboratory of Luminescent Materials and DevicesSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510641 China
| | - Ben Zhong Tang
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong Hong Kong
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21
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Pathak P, Yao W, Hook KD, Vik R, Winnerdy FR, Brown JQ, Gibb BC, Pursell ZF, Phan AT, Jayawickramarajah J. Bright G-Quadruplex Nanostructures Functionalized with Porphyrin Lanterns. J Am Chem Soc 2019; 141:12582-12591. [PMID: 31322869 DOI: 10.1021/jacs.9b03250] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The intricate arrangement of numerous and closely placed chromophores on nanoscale scaffolds can lead to key photonic applications ranging from optical waveguides and antennas to signal-enhanced fluorescent sensors. In this regard, the self-assembly of dye-appended DNA sequences into programmed photonic architectures is promising. However, the dense packing of dyes can result in not only compromised DNA assembly (leading to ill-defined structures and precipitates) but also to essentially nonfluorescent systems (due to π-π aggregation). Here, we introduce a two-step "tether and mask" strategy wherein large porphyrin dyes are first attached to short G-quadruplex-forming sequences and then reacted with per-O-methylated β-cyclodextrin (PMβCD) caps, to form supramolecular synthons featuring the porphyrin fluor fixed into a masked porphyrin lantern (PL) state, due to intramolecular host-guest interactions in water. The PL-DNA sequences can then be self-assembled into cyclic architectures or unprecedented G-wires tethered with hundreds of porphyrin dyes. Importantly, despite the closely arrayed PL units (∼2 nm), the dyes behave as bright chromophores (up to 180-fold brighter than the analogues lacking the PMβCD masks). Since other self-assembling scaffolds, dyes, and host molecules can be used in this modular approach, this work lays out a general strategy for the bottom-up aqueous self-assembly of bright nanomaterials containing densely packed dyes.
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Affiliation(s)
- Pravin Pathak
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Wei Yao
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Katherine Delaney Hook
- Department of Biochemistry and Molecular Biology , Tulane University , New Orleans , Louisiana 70112 , United States
| | - Ryan Vik
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Fernaldo Richtia Winnerdy
- School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Jonathon Quincy Brown
- Department of Biomedical Engineering , Tulane University , New Orleans , Louisiana 70118 , United States
| | - Bruce C Gibb
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Zachary F Pursell
- Department of Biochemistry and Molecular Biology , Tulane University , New Orleans , Louisiana 70112 , United States
| | - Anh Tuân Phan
- School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Janarthanan Jayawickramarajah
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
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22
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Engineering of B800 bacteriochlorophyll binding site specificity in the Rhodobacter sphaeroides LH2 antenna. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2018; 1860:209-223. [PMID: 30414933 PMCID: PMC6358721 DOI: 10.1016/j.bbabio.2018.11.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/19/2018] [Accepted: 11/07/2018] [Indexed: 11/22/2022]
Abstract
The light-harvesting 2 complex (LH2) of the purple phototrophic bacterium Rhodobacter sphaeroides is a highly efficient, light-harvesting antenna that allows growth under a wide-range of light intensities. In order to expand the spectral range of this antenna complex, we first used a series of competition assays to measure the capacity of the non-native pigments 3-acetyl chlorophyll (Chl) a, Chl d, Chl f or bacteriochlorophyll (BChl) b to replace native BChl a in the B800 binding site of LH2. We then adjusted the B800 site and systematically assessed the binding of non-native pigments. We find that Arg-10 of the LH2 β polypeptide plays a crucial role in binding specificity, by providing a hydrogen-bond to the 3-acetyl group of native and non-native pigments. Reconstituted LH2 complexes harbouring the series of (B)Chls were examined by transient absorption and steady-state fluorescence spectroscopies. Although slowed 10-fold to ~6 ps, energy transfer from Chl a to B850 BChl a remained highly efficient. We measured faster energy-transfer time constants for Chl d (3.5 ps) and Chl f (2.7 ps), which have red-shifted absorption maxima compared to Chl a. BChl b, red-shifted from the native BChl a, gave extremely rapid (≤0.1 ps) transfer. These results show that modified LH2 complexes, combined with engineered (B)Chl biosynthesis pathways in vivo, have potential for retaining high efficiency whilst acquiring increased spectral range.
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23
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Jiang J, Matula AJ, Swierk JR, Romano N, Wu Y, Batista VS, Crabtree RH, Lindsey JS, Wang H, Brudvig GW. Unusual Stability of a Bacteriochlorin Electrocatalyst under Reductive Conditions. A Case Study on CO2 Conversion to CO. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02991] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jianbing Jiang
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Adam J. Matula
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - John R. Swierk
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Neyen Romano
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Yueshen Wu
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Victor S. Batista
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Robert H. Crabtree
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Jonathan S. Lindsey
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Hailiang Wang
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Gary W. Brudvig
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
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24
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Yang B, Hewage N, Guberman-Pfeffer MJ, Wax T, Gascón JA, Zhao J, Agrios AG, Brückner C. The limited extent of the electronic modulation of chlorins and bacteriochlorins through chromene-annulation. Phys Chem Chem Phys 2018; 20:18233-18240. [PMID: 29942972 DOI: 10.1039/c8cp02712a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Optical data (UV-vis absorption and fluorescence emission spectra, including fluorescence yields and lifetimes) and electrochemical measurements are used to quantify the modulation of the electronic properties of meso-tetrakis(pentafluorophenyl)-chlorin diol and -bacteriochlorin tetraols upon intramolecular chromene-annulation, including the investigation of regio- and stereoisomers. The small modulations of the frontier orbitals of the porphyrinoids are rationalized using DFT computations and can be traced to small electronic effects due to the co-planarized meso-aryl groups in combination with conformational effects.
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Affiliation(s)
- Bowen Yang
- Department of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269-3037, USA.
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25
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Delor M, Dai J, Roberts TD, Rogers JR, Hamed SM, Neaton JB, Geissler PL, Francis MB, Ginsberg NS. Exploiting Chromophore–Protein Interactions through Linker Engineering To Tune Photoinduced Dynamics in a Biomimetic Light-Harvesting Platform. J Am Chem Soc 2018; 140:6278-6287. [DOI: 10.1021/jacs.7b13598] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | | | - Jeffrey B. Neaton
- Kavli Energy NanoSciences Institute, Berkeley, California 94720, United States
| | | | | | - Naomi S. Ginsberg
- Kavli Energy NanoSciences Institute, Berkeley, California 94720, United States
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26
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Hood D, Sahin T, Parkes‐Loach PS, Jiao J, Harris MA, Dilbeck P, Niedzwiedzki DM, Kirmaier C, Loach PA, Bocian DF, Lindsey JS, Holten D. Expanding Covalent Attachment Sites of Nonnative Chromophores to Encompass the C‐Terminal Hydrophilic Domain in Biohybrid Light‐Harvesting Architectures. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201700182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Don Hood
- Department of Chemistry Washington University St. Louis MO 63130-4889 USA
| | - Tuba Sahin
- Department of Chemistry North Carolina State University Raleigh NC 27695-8204 USA
| | | | - Jieying Jiao
- Department of Chemistry University of California Riverside CA 92521-0403 USA
| | - Michelle A. Harris
- Department of Chemistry Washington University St. Louis MO 63130-4889 USA
| | - Preston Dilbeck
- Department of Chemistry Washington University St. Louis MO 63130-4889 USA
| | | | - Christine Kirmaier
- Department of Chemistry Washington University St. Louis MO 63130-4889 USA
| | - Paul A. Loach
- Department of Molecular Biosciences Northwestern University Evanston IL 60208-3500 USA
| | - David F. Bocian
- Department of Chemistry University of California Riverside CA 92521-0403 USA
| | - Jonathan S. Lindsey
- Department of Chemistry North Carolina State University Raleigh NC 27695-8204 USA
| | - Dewey Holten
- Department of Chemistry Washington University St. Louis MO 63130-4889 USA
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27
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Mashima T, Oohora K, Hayashi T. Successive energy transfer within multiple photosensitizers assembled in a hexameric hemoprotein scaffold. Phys Chem Chem Phys 2018; 20:3200-3209. [PMID: 29067390 DOI: 10.1039/c7cp05257j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An assembly of multiple photosensitizers is demonstrated by development of a hexameric hemoprotein (HTHP) scaffold as a light harvesting model to replicate the successive energy transfer occuring within photosensitizer assemblies of natural systems. In our model, six zinc protoporphyrin IX (ZnPP) molecules are arrayed at the heme binding site of HTHP by supramolecular interactions and five fluorescein (Flu) molecules and one Texas Red (Tex) molecule as donor and acceptor photosensitizers, respectively, are attached to the HTHP protein surface with covalent linkages. The flow of excited energy from photoexcited Flu to Tex occurs via two pathways: direct energy transfer from Flu to Tex (path 1) and energy transfer via ZnPP (path 2). Steady state and time-resolved fluorescence measurements reveal that the energy transfer ratio of these pathways (path 1 : path 2) is 39 : 61. These findings indicate that the excited energy originating at five Flu and six ZnPP molecules is collected at one Tex molecule as a funnel-like bottom for light harvesting. The present system using the hexameric hemoprotein scaffold is a promising candidate for construction of an artificial light harvesting system having multiple photosensitizers to promote efficient use of solar energy.
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Affiliation(s)
- Tsuyoshi Mashima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan.
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28
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Noji T, Matsuo M, Takeda N, Sumino A, Kondo M, Nango M, Itoh S, Dewa T. Lipid-Controlled Stabilization of Charge-Separated States (P+QB–) and Photocurrent Generation Activity of a Light-Harvesting–Reaction Center Core Complex (LH1-RC) from Rhodopseudomonas palustris. J Phys Chem B 2018; 122:1066-1080. [DOI: 10.1021/acs.jpcb.7b09973] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Tomoyasu Noji
- The OCU Advanced Research Institute for Natural Science & Technology (OCARINA), Osaka City University, Sugimoto-cho, Sumiyoshi-ku, Osaka 558−8585, Japan
| | - Mikano Matsuo
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Nobutaka Takeda
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Ayumi Sumino
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Masaharu Kondo
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Mamoru Nango
- The OCU Advanced Research Institute for Natural Science & Technology (OCARINA), Osaka City University, Sugimoto-cho, Sumiyoshi-ku, Osaka 558−8585, Japan
| | - Shigeru Itoh
- Division
of Material Sciences (Physics), Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464−8602, Japan
| | - Takehisa Dewa
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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29
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Mancini JA, Kodali G, Jiang J, Reddy KR, Lindsey JS, Bryant DA, Dutton PL, Moser CC. Multi-step excitation energy transfer engineered in genetic fusions of natural and synthetic light-harvesting proteins. J R Soc Interface 2017; 14:rsif.2016.0896. [PMID: 28179548 DOI: 10.1098/rsif.2016.0896] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 01/16/2017] [Indexed: 11/12/2022] Open
Abstract
Synthetic proteins designed and constructed from first principles with minimal reference to the sequence of any natural protein have proven robust and extraordinarily adaptable for engineering a range of functions. Here for the first time we describe the expression and genetic fusion of a natural photosynthetic light-harvesting subunit with a synthetic protein designed for light energy capture and multi-step transfer. We demonstrate excitation energy transfer from the bilin of the CpcA subunit (phycocyanin α subunit) of the cyanobacterial photosynthetic light-harvesting phycobilisome to synthetic four-helix-bundle proteins accommodating sites that specifically bind a variety of selected photoactive tetrapyrroles positioned to enhance energy transfer by relay. The examination of combinations of different bilin, chlorin and bacteriochlorin cofactors has led to identification of the preconditions for directing energy from the bilin light-harvesting antenna into synthetic protein-cofactor constructs that can be customized for light-activated chemistry in the cell.
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Affiliation(s)
- Joshua A Mancini
- Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Goutham Kodali
- Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jianbing Jiang
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA
| | | | - Jonathan S Lindsey
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA
| | - Donald A Bryant
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802, USA
| | - P Leslie Dutton
- Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Christopher C Moser
- Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA 19104, USA
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Chaudhri N, Grover N, Sankar M. Versatile Synthetic Route for β-Functionalized Chlorins and Porphyrins by Varying the Size of Michael Donors: Syntheses, Photophysical, and Electrochemical Redox Properties. Inorg Chem 2017; 56:11532-11545. [DOI: 10.1021/acs.inorgchem.7b01158] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Nivedita Chaudhri
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Nitika Grover
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Muniappan Sankar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
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31
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Swainsbury DJK, Martin EC, Vasilev C, Parkes-Loach PS, Loach PA, Neil Hunter C. Engineering of a calcium-ion binding site into the RC-LH1-PufX complex of Rhodobacter sphaeroides to enable ion-dependent spectral red-shifting. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2017; 1858:927-938. [PMID: 28826909 PMCID: PMC5604489 DOI: 10.1016/j.bbabio.2017.08.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/02/2017] [Accepted: 08/17/2017] [Indexed: 01/01/2023]
Abstract
The reaction centre-light harvesting 1 (RC-LH1) complex of Thermochromatium (Tch.) tepidum has a unique calcium-ion binding site that enhances thermal stability and red-shifts the absorption of LH1 from 880nm to 915nm in the presence of calcium-ions. The LH1 antenna of mesophilic species of phototrophic bacteria such as Rhodobacter (Rba.) sphaeroides does not possess such properties. We have engineered calcium-ion binding into the LH1 antenna of Rba. sphaeroides by progressively modifying the native LH1 polypeptides with sequences from Tch. tepidum. We show that acquisition of the C-terminal domains from LH1 α and β of Tch. tepidum is sufficient to activate calcium-ion binding and the extent of red-shifting increases with the proportion of Tch. tepidum sequence incorporated. However, full exchange of the LH1 polypeptides with those of Tch. tepidum results in misassembled core complexes. Isolated α and β polypeptides from our most successful mutant were reconstituted in vitro with BChl a to form an LH1-type complex, which was stabilised 3-fold by calcium-ions. Additionally, carotenoid specificity was changed from spheroidene found in Rba. sphaeroides to spirilloxanthin found in Tch. tepidum, with the latter enhancing in vitro formation of LH1. These data show that the C-terminal LH1 α/β domains of Tch. tepidum behave autonomously, and are able to transmit calcium-ion induced conformational changes to BChls bound to the rest of a foreign antenna complex. Thus, elements of foreign antenna complexes, such as calcium-ion binding and blue/red switching of absorption, can be ported into Rhodobacter sphaeroides using careful design processes.
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Affiliation(s)
- David J K Swainsbury
- Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield, S10 2TN, United Kingdom.
| | - Elizabeth C Martin
- Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield, S10 2TN, United Kingdom
| | - Cvetelin Vasilev
- Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield, S10 2TN, United Kingdom
| | - Pamela S Parkes-Loach
- Department of Molecular Biosciences, Northwestern University, Hogan 2100, 2205 Tech Drive, Evanston, IL 60208, United States
| | - Paul A Loach
- Department of Molecular Biosciences, Northwestern University, Hogan 2100, 2205 Tech Drive, Evanston, IL 60208, United States
| | - C Neil Hunter
- Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield, S10 2TN, United Kingdom
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32
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Augmenting light coverage for photosynthesis through YFP-enhanced charge separation at the Rhodobacter sphaeroides reaction centre. Nat Commun 2017; 8:13972. [PMID: 28054547 PMCID: PMC5512671 DOI: 10.1038/ncomms13972] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 11/17/2016] [Indexed: 12/31/2022] Open
Abstract
Photosynthesis uses a limited range of the solar spectrum, so enhancing spectral coverage could improve the efficiency of light capture. Here, we show that a hybrid reaction centre (RC)/yellow fluorescent protein (YFP) complex accelerates photosynthetic growth in the bacterium Rhodobacter sphaeroides. The structure of the RC/YFP-light-harvesting 1 (LH1) complex shows the position of YFP attachment to the RC-H subunit, on the cytoplasmic side of the RC complex. Fluorescence lifetime microscopy of whole cells and ultrafast transient absorption spectroscopy of purified RC/YFP complexes show that the YFP–RC intermolecular distance and spectral overlap between the emission of YFP and the visible-region (QX) absorption bands of the RC allow energy transfer via a Förster mechanism, with an efficiency of 40±10%. This proof-of-principle study demonstrates the feasibility of increasing spectral coverage for harvesting light using non-native genetically-encoded light-absorbers, thereby augmenting energy transfer and trapping in photosynthesis. Photosynthesis uses only a limited range of solar radiation. Here, Grayson et al. genetically incorporated the yellow fluorescent protein (YFP) chromophore into a bacterial photosystem, and show that energy harvested by reaction centre–YFP complexes can augment photosynthesis in vivo.
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33
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Yang W, Kang B, Voelz VA, Seo J. Control of porphyrin interactions via structural changes of a peptoid scaffold. Org Biomol Chem 2017; 15:9670-9679. [DOI: 10.1039/c7ob02398g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A template to control porphyrin interactions is constructed by displaying porphyrins at defined positions on a helical peptoid.
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Affiliation(s)
- Woojin Yang
- Department of Chemistry
- School of Physics and Chemistry
- Gwangju Institute of Science and Technology
- Gwangju 61005
- South Korea
| | - Boyeong Kang
- Department of Chemistry
- School of Physics and Chemistry
- Gwangju Institute of Science and Technology
- Gwangju 61005
- South Korea
| | | | - Jiwon Seo
- Department of Chemistry
- School of Physics and Chemistry
- Gwangju Institute of Science and Technology
- Gwangju 61005
- South Korea
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34
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Kodali G, Mancini JA, Solomon LA, Episova TV, Roach N, Hobbs CJ, Wagner P, Mass OA, Aravindu K, Barnsley JE, Gordon KC, Officer DL, Dutton PL, Moser CC. Design and engineering of water-soluble light-harvesting protein maquettes. Chem Sci 2017; 8:316-324. [PMID: 28261441 PMCID: PMC5330312 DOI: 10.1039/c6sc02417c] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 08/16/2016] [Indexed: 02/04/2023] Open
Abstract
Natural selection in photosynthesis has engineered tetrapyrrole based, nanometer scale, light harvesting and energy capture in light-induced charge separation. By designing and creating nanometer scale artificial light harvesting and charge separating proteins, we have the opportunity to reengineer and overcome the limitations of natural selection to extend energy capture to new wavelengths and to tailor efficient systems that better meet human as opposed to cellular energetic needs. While tetrapyrrole cofactor incorporation in natural proteins is complex and often assisted by accessory proteins for cofactor transport and insertion, artificial protein functionalization relies on a practical understanding of the basic physical chemistry of protein and cofactors that drive nanometer scale self-assembly. Patterning and balancing of hydrophobic and hydrophilic tetrapyrrole substituents is critical to avoid natural or synthetic porphyrin and chlorin aggregation in aqueous media and speed cofactor partitioning into the non-polar core of a man-made water soluble protein designed according to elementary first principles of protein folding. This partitioning is followed by site-specific anchoring of tetrapyrroles to histidine ligands strategically placed for design control of rates and efficiencies of light energy and electron transfer while orienting at least one polar group towards the aqueous phase.
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Affiliation(s)
- Goutham Kodali
- The Johnson Research Foundation and Department of Biochemistry and Biophysics , University of Pennsylvania , Philadelphia , PA 10104 , USA .
| | - Joshua A. Mancini
- The Johnson Research Foundation and Department of Biochemistry and Biophysics , University of Pennsylvania , Philadelphia , PA 10104 , USA .
| | - Lee A. Solomon
- The Johnson Research Foundation and Department of Biochemistry and Biophysics , University of Pennsylvania , Philadelphia , PA 10104 , USA .
| | - Tatiana V. Episova
- The Johnson Research Foundation and Department of Biochemistry and Biophysics , University of Pennsylvania , Philadelphia , PA 10104 , USA .
| | - Nicholas Roach
- The ARC Centre of Excellence for Electromaterials Science and the Intelligent Polymer Research Institute , University of Wollongong , NSW 2522 , Australia
| | - Christopher J. Hobbs
- The ARC Centre of Excellence for Electromaterials Science and the Intelligent Polymer Research Institute , University of Wollongong , NSW 2522 , Australia
| | - Pawel Wagner
- The ARC Centre of Excellence for Electromaterials Science and the Intelligent Polymer Research Institute , University of Wollongong , NSW 2522 , Australia
| | - Olga A. Mass
- N Carolina State University , Department of Chemistry , Raleigh , NC 27695 , USA
| | - Kunche Aravindu
- N Carolina State University , Department of Chemistry , Raleigh , NC 27695 , USA
| | | | - Keith C. Gordon
- University of Otago , Department of Chemistry , Dunedin 9016 , New Zealand
| | - David L. Officer
- The ARC Centre of Excellence for Electromaterials Science and the Intelligent Polymer Research Institute , University of Wollongong , NSW 2522 , Australia
| | - P. Leslie Dutton
- The Johnson Research Foundation and Department of Biochemistry and Biophysics , University of Pennsylvania , Philadelphia , PA 10104 , USA .
| | - Christopher C. Moser
- The Johnson Research Foundation and Department of Biochemistry and Biophysics , University of Pennsylvania , Philadelphia , PA 10104 , USA .
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35
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Guberman-Pfeffer MJ, Greco JA, Samankumara LP, Zeller M, Birge RR, Gascón JA, Brückner C. Bacteriochlorins with a Twist: Discovery of a Unique Mechanism to Red-Shift the Optical Spectra of Bacteriochlorins. J Am Chem Soc 2016; 139:548-560. [DOI: 10.1021/jacs.6b12419] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Jordan A. Greco
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Lalith P. Samankumara
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Matthias Zeller
- Department
of Chemistry, Youngstown State University, One University Plaza, Youngstown, Ohio 44555-3663, United States
| | - Robert R. Birge
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
- Department
of Molecular and Cell Biology, University of Connecticut, Storrs, Connecticut 06269-3125, United States
| | - José A. Gascón
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Christian Brückner
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
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36
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Gish MK, Lapides AM, Brennaman MK, Templeton JL, Meyer TJ, Papanikolas JM. Ultrafast Recombination Dynamics in Dye-Sensitized SnO 2/TiO 2 Core/Shell Films. J Phys Chem Lett 2016; 7:5297-5301. [PMID: 27973875 DOI: 10.1021/acs.jpclett.6b02388] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Interfacial dynamics are investigated in SnO2/TiO2 core/shell films derivatized with a Ru(II)-polypyridyl chromophore ([RuII(bpy)2(4,4'-(PO3H2)2bpy)]2+, RuP) using transient absorption methods. Electron injection from the chromophore into the TiO2 shell occurs within a few picoseconds after photoexcitation. Loss of the oxidized dye through recombination occurs across time scales spanning 10 orders of magnitude. The majority (60%) of charge recombination events occur shortly after injection (τ = 220 ps), while a small fraction (≤20%) of the oxidized chromophores persists for milliseconds. The lifetime of long-lived charge-separated states (CSS) depends exponentially on shell thickness, suggesting that the injected electrons reside in the SnO2 core and must tunnel through the TiO2 shell to recombine with oxidized dyes. While the core/shell architecture extends the lifetime in a small fraction of the CSS, making water oxidation possible, the subnanosecond recombination process has profound implications for the overall efficiencies of dye-sensitized photoelectrosynthesis cells (DSPECs).
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Affiliation(s)
- Melissa K Gish
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Alexander M Lapides
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - M Kyle Brennaman
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Joseph L Templeton
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Thomas J Meyer
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - John M Papanikolas
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
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37
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Amanpour J, Hu G, Alexy EJ, Mandal AK, Kang HS, Yuen JM, Diers JR, Bocian DF, Lindsey JS, Holten D. Tuning the Electronic Structure and Properties of Perylene-Porphyrin-Perylene Panchromatic Absorbers. J Phys Chem A 2016; 120:7434-50. [PMID: 27636001 DOI: 10.1021/acs.jpca.6b06857] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Light-harvesting architectures that afford strong absorption across the near-ultraviolet to near-infrared region, namely, panchromatic absorptivity, are potentially valuable for capturing the broad spectral distribution of sunlight. One previously reported triad consisting of two perylene monoimides strongly coupled to a free base porphyrin via ethyne linkers (FbT) shows panchromatic absorption together with a porphyrin-like S1 excited state albeit at lower energy than that of a typical monomeric porphyrin. Here, two new porphyrin-bis(perylene) triads have been prepared wherein the porphyrin bears two pentafluorophenyl substituents. The porphyrin is in the free base (FbT-F) or zinc chelate (ZnT-F) forms. The zinc chelate (ZnT) of the original triad bearing nonfluorinated aryl rings also was prepared. The triads were characterized using static and time-resolved optical spectroscopy. The results were analyzed with the aid of molecular-orbital characteristics obtained using density functional theory calculations. Of the four triads, FbT is the most panchromatic in affording the most even distribution of absorption spectral intensity as well as exhibiting the largest wavelength span (380-750 nm). The triads exhibit fluorescence yields (0.35 for FbT-F in toluene) that are substantially greater than for the porphyrin benchmarks (0.049 for FbP-F). The singlet excited-state lifetimes (τS) for the triads in toluene decrease in the order FbT-F (2.7 ns) > FbT (2.0 ns) > ZnT (1.2 ns) ∼ ZnT-F (1.1 ns). The τS values in benzonitrile are FbT (1.3 ns) > FbT-F (1.2 ns) > ZnT-F (0.6 ns) > ZnT (0.2 ns). Thus, the free base triads exhibit relatively long (1.2-2.7 ns) excited-state lifetimes in both polar and nonpolar media. The combined photophysical characteristics indicate that FbT and FbT-F are the best choices for panchromatic light-harvesting systems. Collectively, the findings afford insights into the effects of electronic structure on the panchromatic behavior of ethynyl-linked porphyrin-perylene architectures that can help guide next-generation designs and utilization of these systems.
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Affiliation(s)
- Javad Amanpour
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
| | - Gongfang Hu
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
| | - Eric J Alexy
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
| | - Amit Kumar Mandal
- Department of Chemistry, Washington University , St. Louis, Missouri 63130-4889, United States
| | - Hyun Suk Kang
- Department of Chemistry, Washington University , St. Louis, Missouri 63130-4889, United States
| | - Jonathan M Yuen
- Department of Chemistry, Washington University , St. Louis, Missouri 63130-4889, United States
| | - James R Diers
- Department of Chemistry, University of California , Riverside, California 92521-0403, United States
| | - David F Bocian
- Department of Chemistry, University of California , Riverside, California 92521-0403, United States
| | - Jonathan S Lindsey
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
| | - Dewey Holten
- Department of Chemistry, Washington University , St. Louis, Missouri 63130-4889, United States
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38
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Bhat PA, Chat OA, Dar AA. Exploiting Co-solubilization of Warfarin, Curcumin, and Rhodamine B for Modulation of Energy Transfer: A Micelle FRET On/Off Switch. Chemphyschem 2016; 17:2360-72. [DOI: 10.1002/cphc.201600274] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Parvaiz Ahmad Bhat
- Government Degree College Pulwama; Department of Higher Education, J&K; India
| | - Oyais Ahmad Chat
- Department of Chemistry; University of Kashmir, Hazratbal; Srinagar 190 006, J&K India
| | - Aijaz Ahmad Dar
- Department of Chemistry; University of Kashmir, Hazratbal; Srinagar 190 006, J&K India
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39
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Hyland MA, Hewage N, Panther K, Nimthong-Roldán A, Zeller M, Samaraweera M, Gascon JA, Brückner C. Chromene-Annulated Bacteriochlorins. J Org Chem 2016; 81:3603-18. [DOI: 10.1021/acs.joc.6b00273] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael A. Hyland
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Nisansala Hewage
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Kimberly Panther
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Arunpatcha Nimthong-Roldán
- Department
of Chemistry, Youngstown State University, One University Plaza, Youngstown, Ohio 44555-3663, United States
| | - Matthias Zeller
- Department
of Chemistry, Youngstown State University, One University Plaza, Youngstown, Ohio 44555-3663, United States
| | - Milinda Samaraweera
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - José A. Gascon
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Christian Brückner
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
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40
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Oohora K, Mashima T, Ohkubo K, Fukuzumi S, Hayashi T. Energy migration within hexameric hemoprotein reconstituted with Zn porphyrinoid molecules. Chem Commun (Camb) 2016; 51:11138-40. [PMID: 26073549 DOI: 10.1039/c5cc02680f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photosensitizers, Zn protoporphyrin IX and Zn chlorin e6, are completely inserted into each heme pocket of a hexameric apohemoprotein. The fluorescence quenching efficiencies upon addition of methyl viologen are 2.3 and 2.6 fold-higher than those of the partially photosensitizer-inserted proteins, respectively, indicating that the energy migration occurs within the proteins.
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Affiliation(s)
- Koji Oohora
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan.
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41
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Zou Q, Liu K, Abbas M, Yan X. Peptide-Modulated Self-Assembly of Chromophores toward Biomimetic Light-Harvesting Nanoarchitectonics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:1031-43. [PMID: 26273821 DOI: 10.1002/adma.201502454] [Citation(s) in RCA: 202] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 06/18/2015] [Indexed: 05/21/2023]
Abstract
Elegant self-assembling complexes by the combination of proteins/peptides with functional chromophores are decisively responsible for highly efficient light-harvesting and energy transfer in natural photosynthetic systems. Mimicking natural light-harvesting complexes through synthetic peptides is attractive due to their advantanges of programmable primary structure, tunable self-assembly architecture and easy availability in comparison to naturally occuring proteins. Here, an overview of recent progresses in the area of biomimetic light-harvesting nanoarchitectonics based on peptide-modulated self-assembly of chromophores is provided. Adjusting the organization of chromophores, either by creating peptide-chromophore conjugates or by the non-covalent assembly of peptides and chromophores are highlighted. The light-harvesting properties, especially the energy transfer of the biomimetic complexes are critically discussed. The applications of such complexes in the mineralization of inorganic nanoparticles, generation of molecular hydrogen and oxygen, and photosynthesis of bioactive molecules are also included.
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Affiliation(s)
- Qianli Zou
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Kai Liu
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
- University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Manzar Abbas
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
- University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Xuehai Yan
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
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42
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Ashford DL, Gish MK, Vannucci AK, Brennaman MK, Templeton JL, Papanikolas JM, Meyer TJ. Molecular Chromophore–Catalyst Assemblies for Solar Fuel Applications. Chem Rev 2015; 115:13006-49. [DOI: 10.1021/acs.chemrev.5b00229] [Citation(s) in RCA: 363] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Dennis L. Ashford
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
| | - Melissa K. Gish
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
| | - Aaron K. Vannucci
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - M. Kyle Brennaman
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
| | - Joseph L. Templeton
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
| | - John M. Papanikolas
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
| | - Thomas J. Meyer
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
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43
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Yoneda Y, Noji T, Katayama T, Mizutani N, Komori D, Nango M, Miyasaka H, Itoh S, Nagasawa Y, Dewa T. Extension of Light-Harvesting Ability of Photosynthetic Light-Harvesting Complex 2 (LH2) through Ultrafast Energy Transfer from Covalently Attached Artificial Chromophores. J Am Chem Soc 2015; 137:13121-9. [DOI: 10.1021/jacs.5b08508] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yusuke Yoneda
- Graduate
School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Tomoyasu Noji
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
- The OCU Advanced Research Institute for Natural Science & Technology (OCARINA), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Tetsuro Katayama
- Institute
for NanoScience Design, Osaka University, Toyonaka, Osaka 560-8531, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
| | - Naoto Mizutani
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Daisuke Komori
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Mamoru Nango
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
- The OCU Advanced Research Institute for Natural Science & Technology (OCARINA), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Hiroshi Miyasaka
- Graduate
School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Shigeru Itoh
- Center for
Gene Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Yutaka Nagasawa
- Graduate
School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
| | - Takehisa Dewa
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
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Sahin T, Harris MA, Vairaprakash P, Niedzwiedzki DM, Subramanian V, Shreve AP, Bocian DF, Holten D, Lindsey JS. Self-Assembled Light-Harvesting System from Chromophores in Lipid Vesicles. J Phys Chem B 2015; 119:10231-43. [PMID: 26230425 DOI: 10.1021/acs.jpcb.5b04841] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lipid vesicles are used as the organizational structure of self-assembled light-harvesting systems. Following analysis of 17 chromophores, six were selected for inclusion in vesicle-based antennas. The complementary absorption features of the chromophores span the near-ultraviolet, visible, and near-infrared region. Although the overall concentration of the pigments is low (~1 μM for quantitative spectroscopic studies) in a cuvette, the lipid-vesicle system affords high concentration (≥10 mM) in the bilayer for efficient energy flow from donor to acceptor. Energy transfer was characterized in 13 representative binary mixtures using static techniques (fluorescence-excitation versus absorptance spectra, quenching of donor fluorescence, modeling emission spectra of a mixture versus components) and time-resolved spectroscopy (fluorescence, ultrafast absorption). Binary donor-acceptor systems that employ a boron-dipyrrin donor (S0 ↔ S1 absorption/emission in the blue-green) and a chlorin or bacteriochlorin acceptor (S0 ↔ S1 absorption/emission in the red or near-infrared) have an average excitation-energy-transfer efficiency (ΦEET) of ~50%. Binary systems with a chlorin donor and a chlorin or bacteriochlorin acceptor have ΦEET ∼ 85%. The differences in ΦEET generally track the donor-fluorescence/acceptor-absorption spectral overlap within a dipole-dipole coupling (Förster) mechanism. Substantial deviation from single-exponential decay of the excited donor (due to the dispersion of donor-acceptor distances) is expected and observed. The time profiles and resulting ΦEET are modeled on the basis of (Förster) energy transfer between chromophores relatively densely packed in a two-dimensional compartment. Initial studies of two ternary and one quaternary combination of chromophores show the enhanced spectral coverage and energy-transfer efficacy expected on the basis of the binary systems. Collectively, this approach may provide one of the simplest designs for self-assembled light-harvesting systems that afford broad solar collection and efficient energy transfer.
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Affiliation(s)
- Tuba Sahin
- †Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Michelle A Harris
- ‡Department of Chemistry, Washington University, St. Louis, Missouri 63130-4889, United States
| | - Pothiappan Vairaprakash
- †Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Dariusz M Niedzwiedzki
- §Photosynthetic Antenna Research Center, Washington University, St. Louis, Missouri 63130-4889, United States
| | - Vijaya Subramanian
- ∥Center for Biomedical Engineering and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Andrew P Shreve
- ∥Center for Biomedical Engineering and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - David F Bocian
- ⊥Department of Chemistry, University of California, Riverside, California 92521-0403, United States
| | - Dewey Holten
- ‡Department of Chemistry, Washington University, St. Louis, Missouri 63130-4889, United States
| | - Jonathan S Lindsey
- †Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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Gu Y, Ellis-Guardiola K, Srivastava P, Lewis JC. Preparation, Characterization, and Oxygenase Activity of a Photocatalytic Artificial Enzyme. Chembiochem 2015; 16:1880-1883. [PMID: 26097041 DOI: 10.1002/cbic.201500165] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Indexed: 11/12/2022]
Abstract
A bicyclo[6,1,0]nonyne-substituted 9-mesityl-10-methyl-acridinium cofactor was prepared and covalently linked to a prolyl oligopeptidase scaffold containing a genetically encoded 4-azido-L-phenylalanine residue in its active site. The resulting artificial enzyme catalyzed sulfoxidation when irradiated with visible light in the presence of air. This reaction proceeds by initial electron abstraction from the sulfide within the enzyme active site, and the protein scaffold extended the fluorescence lifetime of the acridium cofactor. The mode of sulfide activation and placement of the acridinium cofactor (5) in POP-ZA4 -5 make this artificial enzyme a promising platform for developing selective photocatalytic transformations.
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Affiliation(s)
- Yifan Gu
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, IL 60637 (USA)
| | - Ken Ellis-Guardiola
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, IL 60637 (USA)
| | - Poonam Srivastava
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, IL 60637 (USA)
| | - Jared C Lewis
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, IL 60637 (USA)
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He L, Zhu S, Liu Y, Xie Y, Xu Q, Wei H, Lin W. Broadband Light-Harvesting Molecular Triads with High FRET Efficiency Based on the Coumarin-Rhodamine-BODIPY Platform. Chemistry 2015; 21:12181-7. [DOI: 10.1002/chem.201501375] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Indexed: 11/12/2022]
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Noriega R, Finley DT, Haberstroh J, Geissler PL, Francis MB, Ginsberg NS. Manipulating Excited-State Dynamics of Individual Light-Harvesting Chromophores through Restricted Motions in a Hydrated Nanoscale Protein Cavity. J Phys Chem B 2015; 119:6963-73. [PMID: 26035585 DOI: 10.1021/acs.jpcb.5b03784] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Manipulating the photophysical properties of light-absorbing units is a crucial element in the design of biomimetic light-harvesting systems. Using a highly tunable synthetic platform combined with transient absorption and time-resolved fluorescence measurements and molecular dynamics simulations, we interrogate isolated chromophores covalently linked to different positions in the interior of the hydrated nanoscale cavity of a supramolecular protein assembly. We find that, following photoexcitation, the time scales over which these chromophores are solvated, undergo conformational rearrangements, and return to the ground state are highly sensitive to their position within this cavity and are significantly slower than in a bulk aqueous solution. Molecular dynamics simulations reveal the hindered translations and rotations of water molecules within the protein cavity with spatial specificity. The results presented herein show that fully hydrated nanoscale protein cavities are a promising way to mimic the tight protein pockets found in natural light-harvesting complexes. We also show that the interplay between protein, solvent, and chromophores can be used to substantially tune the relaxation processes within artificial light-harvesting assemblies in order to significantly improve the yield of interchromophore energy transfer and extend the range of excitation transport. Our observations have implications for other important, similarly sized bioinspired materials, such as nanoreactors and biocompatible targeted delivery agents.
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Affiliation(s)
| | | | | | | | | | - Naomi S Ginsberg
- ∇Kavli Energy NanoSciences Institute, Berkeley, California 94720, United States
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48
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Adams PG, Collins AM, Sahin T, Subramanian V, Urban VS, Vairaprakash P, Tian Y, Evans DG, Shreve AP, Montaño GA. Diblock copolymer micelles and supported films with noncovalently incorporated chromophores: a modular platform for efficient energy transfer. NANO LETTERS 2015; 15:2422-2428. [PMID: 25719733 DOI: 10.1021/nl504814x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report generation of modular, artificial light-harvesting assemblies where an amphiphilic diblock copolymer, poly(ethylene oxide)-block-poly(butadiene), serves as the framework for noncovalent organization of BODIPY-based energy donor and bacteriochlorin-based energy acceptor chromophores. The assemblies are adaptive and form well-defined micelles in aqueous solution and high-quality monolayer and bilayer films on solid supports, with the latter showing greater than 90% energy transfer efficiency. This study lays the groundwork for further development of modular, polymer-based materials for light harvesting and other photonic applications.
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Affiliation(s)
- Peter G Adams
- †Center for Integrated Nanotechnologies, Los Alamos National Laboratories, Los Alamos, New Mexico 87545, United States
| | - Aaron M Collins
- †Center for Integrated Nanotechnologies, Los Alamos National Laboratories, Los Alamos, New Mexico 87545, United States
| | - Tuba Sahin
- ‡Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Vijaya Subramanian
- §Center for Biomedical Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Volker S Urban
- ⊥Biology and Soft Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Pothiappan Vairaprakash
- ‡Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Yongming Tian
- †Center for Integrated Nanotechnologies, Los Alamos National Laboratories, Los Alamos, New Mexico 87545, United States
- ¶Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, United States
| | - Deborah G Evans
- §Center for Biomedical Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Andrew P Shreve
- §Center for Biomedical Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Gabriel A Montaño
- †Center for Integrated Nanotechnologies, Los Alamos National Laboratories, Los Alamos, New Mexico 87545, United States
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Affiliation(s)
- Torsten Bruhn
- Institute
of Organic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Christian Brückner
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
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50
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Jiang J, Reddy KR, Pavan MP, Lubian E, Harris MA, Jiao J, Niedzwiedzki DM, Kirmaier C, Parkes-Loach PS, Loach PA, Bocian DF, Holten D, Lindsey JS. Amphiphilic, hydrophilic, or hydrophobic synthetic bacteriochlorins in biohybrid light-harvesting architectures: consideration of molecular designs. PHOTOSYNTHESIS RESEARCH 2014; 122:187-202. [PMID: 24997120 DOI: 10.1007/s11120-014-0021-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 05/26/2014] [Indexed: 06/03/2023]
Abstract
Biohybrid light-harvesting architectures can be constructed that employ native-like bacterial photosynthetic antenna peptides as a scaffold to which synthetic chromophores are attached to augment overall spectral coverage. Synthetic bacteriochlorins are attractive to enhance capture of solar radiation in the photon-rich near-infrared spectral region. The effect of the polarity of the bacteriochlorin substituents on the antenna self-assembly process was explored by the preparation of a bacteriochlorin-peptide conjugate using a synthetic amphiphilic bacteriochlorin (B1) to complement prior studies using hydrophilic (B2, four carboxylic acids) or hydrophobic (B3) bacteriochlorins. The amphiphilic bioconjugatable bacteriochlorin B1 with a polar ammonium-terminated tail was synthesized by sequential Pd-mediated reactions of a 3,13-dibromo-5-methoxybacteriochlorin. Each bacteriochlorin bears a maleimido-terminated tether for attachment to a cysteine-containing analog of the Rhodobacter sphaeroides antenna β-peptide to give conjugates β-B1, β-B2, and β-B3. Given the hydrophobic nature of the β-peptide, the polarity of B1 and B2 facilitated purification of the respective conjugate compared to the hydrophobic B3. Bacteriochlorophyll a (BChl a) associates with each conjugate in aqueous micellar media to form a dyad containing two β-peptides, two covalently attached synthetic bacteriochlorins, and a datively bonded BChl-a pair, albeit to a limited extent for β-B2. The reversible assembly/disassembly of dyad (β-B2/BChl)2 was examined in aqueous detergent (octyl glucoside) solution by temperature variation (15-35 °C). The energy-transfer efficiency from the synthetic bacteriochlorin to the BChl-a dimer was found to be 0.85 for (β-B1/BChl)2, 0.40 for (β-B2/BChl)2, and 0.85 for (β-B3/BChl)2. Thus, in terms of handling, assembly and energy-transfer efficiency taken together, the amphiphilic design examined herein is more attractive than the prior hydrophilic or hydrophobic designs.
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Affiliation(s)
- Jianbing Jiang
- Department of Chemistry, North Carolina State University, Raleigh, NC, 27695-8204, USA
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