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Excited State Frequencies of Chlorophyll f and Chlorophyll a and Evaluation of Displacement through Franck-Condon Progression Calculations. Molecules 2019; 24:molecules24071326. [PMID: 30987301 PMCID: PMC6479460 DOI: 10.3390/molecules24071326] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 03/27/2019] [Accepted: 04/02/2019] [Indexed: 11/17/2022] Open
Abstract
We present ground and excited state frequency calculations of the recently discovered extremely red-shifted chlorophyll f. We discuss the experimentally available vibrational mode assignments of chlorophyll f and chlorophyll a which are characterised by particularly large downshifts of 131-keto mode in the excited state. The accuracy of excited state frequencies and their displacements are evaluated by the construction of Franck–Condon (FC) and Herzberg–Teller (HT) progressions at the CAM-B3LYP/6-31G(d) level. Results show that while CAM-B3LYP results are improved relative to B3LYP calculations, the displacements and downshifts of high-frequency modes are underestimated still, and that the progressions calculated for low temperature are dominated by low-frequency modes rather than fingerprint modes that are Resonant Raman active.
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2
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Geng J, Aioub M, El-Sayed MA, Barry BA. An Ultraviolet Resonance Raman Spectroscopic Study of Cisplatin and Transplatin Interactions with Genomic DNA. J Phys Chem B 2017; 121:8975-8983. [PMID: 28925698 DOI: 10.1021/acs.jpcb.7b08156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ultraviolet resonance Raman (UVRR) spectroscopy is a label-free method to define biomacromolecular interactions with anticancer compounds. Using UVRR, we describe the binding interactions of two Pt(II) compounds, cisplatin (cis-diamminedichloroplatinum(II)) and its isomer, transplatin, with nucleotides and genomic DNA. Cisplatin binds to DNA and other cellular components and triggers apoptosis, whereas transplatin is clinically ineffective. Here, a 244 nm UVRR study shows that purine UVRR bands are altered in frequency and intensity when mononucleotides are treated with cisplatin. This result is consistent with previous suggestions that purine N7 provides the cisplatin-binding site. The addition of cisplatin to DNA also causes changes in the UVRR spectrum, consistent with binding of platinum to purine N7 and disruption of hydrogen-bonding interactions between base pairs. Equally important is that transplatin treatment of DNA generates similar UVRR spectral changes, when compared to cisplatin-treated samples. Kinetic analysis, performed by monitoring decreases of the 1492 cm-1 band, reveals biphasic kinetics and is consistent with a two-step binding mechanism for both platinum compounds. For cisplatin-DNA, the rate constants (6.8 × 10-5 and 6.5 × 10-6 s-1) are assigned to the formation of monofunctional adducts and to bifunctional, intrastrand cross-linking, respectively. In transplatin-DNA, there is a 3.4-fold decrease in the rate constant of the slow phase, compared with the cisplatin samples. This change is attributed to generation of interstrand, rather than intrastrand, adducts. This longer reaction time may result in increased competition in the cellular environment and account, at least in part, for the lower pharmacological efficacy of transplatin.
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Affiliation(s)
- Jiafeng Geng
- School of Chemistry and Biochemistry, ‡Parker H. Petit Institute of Bioengineering and Bioscience, and §Laser Dynamics Laboratory, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Mena Aioub
- School of Chemistry and Biochemistry, ‡Parker H. Petit Institute of Bioengineering and Bioscience, and §Laser Dynamics Laboratory, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Mostafa A El-Sayed
- School of Chemistry and Biochemistry, ‡Parker H. Petit Institute of Bioengineering and Bioscience, and §Laser Dynamics Laboratory, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Bridgette A Barry
- School of Chemistry and Biochemistry, ‡Parker H. Petit Institute of Bioengineering and Bioscience, and §Laser Dynamics Laboratory, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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3
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Dahlberg PD, Ting PC, Massey SC, Martin EC, Hunter CN, Engel GS. Electronic Structure and Dynamics of Higher-Lying Excited States in Light Harvesting Complex 1 from Rhodobacter sphaeroides. J Phys Chem A 2016; 120:4124-30. [PMID: 27232937 PMCID: PMC5668141 DOI: 10.1021/acs.jpca.6b04146] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Light harvesting in photosynthetic organisms involves efficient transfer of energy from peripheral antenna complexes to core antenna complexes, and ultimately to the reaction center where charge separation drives downstream photosynthetic processes. Antenna complexes contain many strongly coupled chromophores, which complicates analysis of their electronic structure. Two-dimensional electronic spectroscopy (2DES) provides information on energetic coupling and ultrafast energy transfer dynamics, making the technique well suited for the study of photosynthetic antennae. Here, we present 2DES results on excited state properties and dynamics of a core antenna complex, light harvesting complex 1 (LH1), embedded in the photosynthetic membrane of Rhodobacter sphaeroides. The experiment reveals weakly allowed higher-lying excited states in LH1 at 770 nm, which transfer energy to the strongly allowed states at 875 nm with a lifetime of 40 fs. The presence of higher-lying excited states is in agreement with effective Hamiltonians constructed using parameters from crystal structures and atomic force microscopy (AFM) studies. The energy transfer dynamics between the higher- and lower-lying excited states agree with Redfield theory calculations.
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Affiliation(s)
- Peter D. Dahlberg
- Graduate Program in the Biophysical Sciences, Institute for Biophysical Dynamics, and the James Franck Institute, The University of Chicago, Chicago, IL 60637
| | - Po-Chieh Ting
- Department of Chemistry, Institute for Biophysical Dynamics, and the James Franck Institute, The University of Chicago, Chicago, IL 60637
| | - Sara C. Massey
- Department of Chemistry, Institute for Biophysical Dynamics, and the James Franck Institute, The University of Chicago, Chicago, IL 60637
| | - Elizabeth C. Martin
- Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield S10 2TN, UK
| | - C. Neil Hunter
- Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield S10 2TN, UK
| | - Gregory S. Engel
- Department of Chemistry, Institute for Biophysical Dynamics, and the James Franck Institute, The University of Chicago, Chicago, IL 60637
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4
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Flanagan ML, Long PD, Dahlberg PD, Rolczynski BS, Massey SC, Engel GS. Mutations to R. sphaeroides Reaction Center Perturb Energy Levels and Vibronic Coupling but Not Observed Energy Transfer Rates. J Phys Chem A 2015; 120:1479-87. [PMID: 26630123 DOI: 10.1021/acs.jpca.5b08366] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The bacterial reaction center is capable of both efficiently collecting and quickly transferring energy within the complex; therefore, the reaction center serves as a convenient model for both energy transfer and charge separation. To spectroscopically probe the interactions between the electronic excited states on the chromophores and their intricate relationship with vibrational motions in their environment, we examine coherences between the excited states. Here, we investigate this question by introducing a series of point mutations within 12 Å of the special pair of bacteriochlorophylls in the Rhodobacter sphaeroides reaction center. Using two-dimensional spectroscopy, we find that the time scales of energy transfer dynamics remain unperturbed by these mutations. However, within these spectra, we detect changes in the mixed vibrational-electronic coherences in these reaction centers. Our results indicate that resonance between bacteriochlorophyll vibrational modes and excitonic energy gaps promote electronic coherences and support current vibronic models of photosynthetic energy transfer.
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Affiliation(s)
| | | | | | - Brian S Rolczynski
- Department of Chemistry, The James Franck Institute and The Institute for Biophysical Dynamics, The University of Chicago , Chicago, Illinois 60637, United States
| | - Sara C Massey
- Department of Chemistry, The James Franck Institute and The Institute for Biophysical Dynamics, The University of Chicago , Chicago, Illinois 60637, United States
| | - Gregory S Engel
- Department of Chemistry, The James Franck Institute and The Institute for Biophysical Dynamics, The University of Chicago , Chicago, Illinois 60637, United States
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5
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Lundholm I, Wahlgren WY, Piccirilli F, Di Pietro P, Duelli A, Berntsson O, Lupi S, Perucchi A, Katona G. Terahertz absorption of illuminated photosynthetic reaction center solution: a signature of photoactivation? RSC Adv 2014. [DOI: 10.1039/c4ra03787a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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6
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Sharp LZ, Egorova D. Towards microscopic assignment of oscillative signatures in two-dimensional electronic photon-echo signals of vibronic oligomers: A vibronic dimer model. J Chem Phys 2013; 139:144304. [DOI: 10.1063/1.4822425] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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7
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Chin CH, Shiu HJ, Wang HW, Chen YL, Wang CC, Lin SH, Hayashi M. Theoretical Treatments of Radiationless Transitions. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200600016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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8
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Models of Ultrafast Energy and Electron Transfers in Bacterial Reaction Centers. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200000101] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Chang CH, Hayashi M, Chang R, Liang KK, Yang TS, Lin SH. A Theoretical Analysis of Absorption Spectra and Dynamics of Photosynthetic Reaction Centers. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200000107] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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10
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Stryer L. Celebrating the Scientific Life of Richard A. Mathies. J Phys Chem B 2012; 116:10409-10. [DOI: 10.1021/jp306719z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Caycedo-Soler F, Chin AW, Almeida J, Huelga SF, Plenio MB. The nature of the low energy band of the Fenna-Matthews-Olson complex: Vibronic signatures. J Chem Phys 2012; 136:155102. [DOI: 10.1063/1.3703504] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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12
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Chen J, Barry BA. Ultraviolet Resonance Raman Microprobe Spectroscopy of Photosystem II. Photochem Photobiol 2008; 84:815-8. [DOI: 10.1111/j.1751-1097.2008.00298.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Kanchanawong P, Dahlbom MG, Treynor TP, Reimers JR, Hush NS, Boxer SG. Charge Delocalization in the Special-Pair Radical Cation of Mutant Reaction Centers of Rhodobacter sphaeroides from Stark Spectra and Nonadiabatic Spectral Simulations. J Phys Chem B 2006; 110:18688-702. [PMID: 16970500 DOI: 10.1021/jp0623894] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Stark and absorption spectra for the hole-transfer band of the bacteriochlorophyll special pair in the wild-type and L131LH, M160LH, and L131LH/M160LH mutants of the bacterial reaction center of Rhodobacter sphaeroides are presented, along with extensive analyses based on nonadiabatic spectral simulations. Dramatic changes in the Stark spectra are induced by the mutations, changes that are readily interpreted in terms of the redox-energy asymmetry and degree of charge localization in the special-pair radical cation. The effect of mutagenesis on key properties such as the electronic coupling within the special pair and the reorganization energy associated with intervalence hole transfer are determined for the first time. Results for the L131LH and M160LH/L131LH mutants indicate that these species can be considered as influencing the special pair primarily through modulation of the redox asymmetry, as is usually conceptualized, but M160LH is shown to develop a wide range of effects that can be interpreted in terms of significant mutation-induced structural changes in and around the special pair. The nonadiabatic spectra simulations are performed using both a simple two-state 1-mode and an extensive four-state 70-mode model, which includes the descriptions of additional electronic states and explicitly treats the major vibrational modes involved. Excellent agreement between the two simulation approaches is obtained. The simple model is shown to reproduce key features of the Stark effect of the main intervalence transition, while the extensive model quantitatively reproduces most features of the observed spectra for both the electronic and the phase-phonon regions, thus giving a more comprehensive description of the effect of the mutations on the properties of the special-pair radical cation. These results for a series of closely related mixed-valence complexes show that the Stark spectra provide a sensitive indicator for the properties of the mixed-valence complexes and should serve as an instructive example on the application of nonadiabatic simulations to the study of mixed-valence complexes in general as well as other chemical systems akin to the photosynthetic special pair.
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Affiliation(s)
- Pakorn Kanchanawong
- Biophysics Program and Department of Chemistry, Stanford University, Stanford, CA 94305-5080, USA
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14
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Yakovlev AG, Jones MR, Potter JA, Fyfe PK, Vasilieva LG, Shkuropatov AY, Shuvalov VA. Primary charge separation between P* and BA: Electron-transfer pathways in native and mutant GM203L bacterial reaction centers. Chem Phys 2005. [DOI: 10.1016/j.chemphys.2005.08.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Parson WW, Warshel A. Dependence of Photosynthetic Electron-Transfer Kinetics on Temperature and Energy in a Density-Matrix Model. J Phys Chem B 2004. [DOI: 10.1021/jp0495904] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- William W. Parson
- Department of Biochemistry, University of Washington, Box 357350, Seattle, Washington 98195-7350
| | - Arieh Warshel
- Department of Biochemistry, University of Washington, Box 357350, Seattle, Washington 98195-7350
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16
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Jordanides XJ, Scholes GD, Shapley WA, Reimers JR, Fleming GR. Electronic Couplings and Energy Transfer Dynamics in the Oxidized Primary Electron Donor of the Bacterial Reaction Center. J Phys Chem B 2004. [DOI: 10.1021/jp036516x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xanthipe J. Jordanides
- Department of Chemistry, University of California, Berkeley, and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, and School of Chemistry, The University of Sydney, NSW 2006, Australia
| | - Gregory D. Scholes
- Department of Chemistry, University of California, Berkeley, and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, and School of Chemistry, The University of Sydney, NSW 2006, Australia
| | - Warwick A. Shapley
- Department of Chemistry, University of California, Berkeley, and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, and School of Chemistry, The University of Sydney, NSW 2006, Australia
| | - Jeffrey R. Reimers
- Department of Chemistry, University of California, Berkeley, and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, and School of Chemistry, The University of Sydney, NSW 2006, Australia
| | - Graham R. Fleming
- Department of Chemistry, University of California, Berkeley, and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, and School of Chemistry, The University of Sydney, NSW 2006, Australia
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17
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Shelly KR, Carson EA, Beck WF. Vibrational coherence from the dipyridine complex of bacteriochlorophyll a: intramolecular modes in the 10-220-cm(-1) regime, intermolecular solvent modes, and relevance to photosynthesis. J Am Chem Soc 2003; 125:11810-1. [PMID: 14505390 DOI: 10.1021/ja0366890] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present the first observations of vibrational coherence in the 10-220-cm-1 region from bacteriochlorophyll a (BChl) in solution. A distinction can be made for the first time between BChl's intramolecular normal modes and intermolecular modes between BChl and solvent. The results show that the low-frequency vibrations that accompany the initial electron-transfer reaction from the paired BChl primary electron donor, P, in photosynthetic reaction centers arise predominantly from intramolecular modes of histidine-ligated BChl macrocycles. The results also suggest that polar-solvent interactions can significantly perturb the electronic properties of BChl in a manner that might have important functional consequences.
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Affiliation(s)
- Katherine R Shelly
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
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18
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Shuvalov VA, Yakovlev AG. Coupling of nuclear wavepacket motion and charge separation in bacterial reaction centers. FEBS Lett 2003; 540:26-34. [PMID: 12681478 DOI: 10.1016/s0014-5793(03)00237-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The mechanism of the charge separation and stabilization of separated charges was studied using the femtosecond absorption spectroscopy. It was found that nuclear wavepacket motions on potential energy surface of the excited state of the primary electron donor P* leads to a coherent formation of the charge separated states P(+)B(A)(-), P(+)H(A)(-) and P(+)H(B)(-) (where B(A), H(B) and H(A) are the primary and secondary electron acceptors, respectively) in native, pheophytin-modified and mutant reaction centers (RCs) of Rhodobacter sphaeroides R-26 and in Chloroflexus aurantiacus RCs. The processes were studied by measurements of coherent oscillations in kinetics at 890 and 935 nm (the stimulated emission bands of P*), at 800 nm (the absorption band of B(A)) and at 1020 nm (the absorption band of B(A)(-)) as well as at 760 nm (the absorption band of H(A)) and at 750 nm (the absorption band of H(B)). It was found that wavepacket motion on the 130-150 cm(-1) potential surface of P* is accompanied by approaches to the intercrossing region between P* and P(+)B(A)(-) surfaces at 120 and 380 fs delays emitting light at 935 nm (P*) and absorbing light at 1020 nm (P(+)B(A)(-)). In the presence of Tyr M210 (Rb. sphaeroides) or M195 (C. aurantiacus) the stabilization of P(+)B(A)(-) is observed within a few picosseconds in contrast to YM210W. At even earlier delay (approximately 40 fs) the emission at 895 nm and bleaching at 748 nm are observed in C. aurantiacus RCs showing the wavepacket approach to the intercrossing between the P* and P(+)H(B)(-) surfaces at that time. The 32 cm(-1) rotation mode of HOH was found to modulate the electron transfer rate probably due to including of this molecule in polar chain connecting P(B) and B(A) and participating in the charge separation. The mechanism of the charge separation and stabilization of separated charges is discussed in terms of the role of nuclear motions, of polar groups connecting P and acceptors and of proton of OH group of TyrM210.
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Affiliation(s)
- V A Shuvalov
- Laboratory of Photobiophysics, Belozersky Institute of Chemical and Physical Biology of Moscow State University, Moscow 119992, Russia.
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19
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Franzen S, Wallace-Williams SE, Shreve AP. Heme charge-transfer band III is vibronically coupled to the Soret band. J Am Chem Soc 2002; 124:7146-55. [PMID: 12059240 DOI: 10.1021/ja0172722] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A complete resonance Raman excitation profile of the heme charge-transfer band known as band III is presented. The data obtained throughout the near-infrared region show preresonance with the Q-band, but the data also clearly show the enhancement of a number of modes in the spectral region of band III. Only nontotally symmetric modes are observed to have resonance enhancement in the band III region. The observed resonance enhancements in modes of B(1g) symmetry are compared with the enhancements of those same modes in the excitation profiles of the Q-band of deoxy myoglobin, also presented here for this first time. The Q-band data agree well with the theory of vibronic coupling in metalloporphyrins (Shelnutt, J. A. J. Chem. Phys. 1981, 74, 6644-6657). The strong vibronic coupling of the Q-band of the deoxy form of hemes is discussed in terms of the enhancement of modes with both B(1g) and A(2g) symmetry. The comparison between the Q-band and band III reveals that, consistent with the theory, only modes of B(1g) symmetry are enhanced in the vicinity of band III. These results show that band III is vibronically coupled to the Soret band. The coupling of band III to modes with strong rhombic distortion of the heme macrocycle calls into question the hypothesis that the axial iron out-of-plane displacement is primarily responsible for the structure-dynamics correlations observed in myoglobin.
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Affiliation(s)
- Stefan Franzen
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, USA.
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20
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Jordanides XJ, Scholes GD, Fleming GR. The Mechanism of Energy Transfer in the Bacterial Photosynthetic Reaction Center. J Phys Chem B 2001. [DOI: 10.1021/jp003572e] [Citation(s) in RCA: 109] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xanthipe J. Jordanides
- Department of Chemistry, University of California, Berkeley and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Gregory D. Scholes
- Department of Chemistry, University of California, Berkeley and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Graham R. Fleming
- Department of Chemistry, University of California, Berkeley and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
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21
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Chang CH, Hayashi M, Liang KK, Chang R, Lin SH. A Theoretical Analysis of Absorption Spectra of Photosynthetic Reaction Centers: Mechanism of Temperature Dependent Peak Shift. J Phys Chem B 2001. [DOI: 10.1021/jp0020438] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C. H. Chang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan R.O.C., Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 106, Taiwan R.O.C., and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604
| | - M. Hayashi
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan R.O.C., Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 106, Taiwan R.O.C., and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604
| | - K. K. Liang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan R.O.C., Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 106, Taiwan R.O.C., and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604
| | - R. Chang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan R.O.C., Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 106, Taiwan R.O.C., and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604
| | - S. H. Lin
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan R.O.C., Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 106, Taiwan R.O.C., and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604
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22
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Eads DD, Moser C, Blackwood ME, Lin CY, Dutton L, Spiro TG. Selective enhancement of resonance Raman spectra of separate bacteriopheophytins in Rb. sphaeroides reaction centers. Biopolymers 2000; 57:64-76. [PMID: 10766957 DOI: 10.1002/(sici)1097-0282(2000)57:2<64::aid-bip3>3.0.co;2-a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Tunable dye laser excitation of carefully prepared samples of Rb. sphaeroides reaction centers provides richly detailed resonance Raman (RR) spectra of the bacteriopheophytins, H, and the accessory bacteriochlorophylls, B. These spectra demonstrate selective enhancement of the separate bacteriopheophytins on the active (H(L)) and inactive (H(M)) sides of the reaction centers. The spectra are assigned with the aid of normal coordinate analyses using force fields previously developed for porphyrins and reduced porphyrins. Comparison of the H(L) and H(M) vibrational mode frequencies reveals evidence for greater polarization of the acetyl substituent in H(L) than H(M). This polarization is expected to make H(L) easier to reduce, thereby contributing to the directionality of electron transfer from the special pair, P. In addition, the acetyl polarization of H(L) is increased at low temperature (100 K), helping to account for the increase in electron transfer rate. The polarizing field is suggested to arise from the Mg(2+) of the neighboring accessory bacteriochlorophyll, which is 4.9 A from the acetyl O atom. The 100 K spectra show sharpening and intensification of a number of RR bands, suggesting a narrowing of the conformational distribution of chromophores, which is consistent with the reported narrowing of the distribution in electron transfer rates. Excitation at 800 nm produces high-quality RR spectra of the accessory bacteriochlorophylls, and the spectral pattern is unaltered on tuning the excitation to 810 nm in resonance with the upper exciton transition of P. Either the resonance enhancement of P is weak, or the bacteriochlorophyll RR spectra are indistinguishable for P and B.
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Affiliation(s)
- D D Eads
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
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23
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Cua A, Stewart DH, Reifler MJ, Brudvig GW, Bocian DF. Low-Frequency Resonance Raman Characterization of the Oxygen-Evolving Complex of Photosystem II. J Am Chem Soc 2000. [DOI: 10.1021/ja9932885] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Agnes Cua
- Contribution from the Departments of Chemistry, University of California, Riverside, California 92521-0403, and Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107
| | - David H. Stewart
- Contribution from the Departments of Chemistry, University of California, Riverside, California 92521-0403, and Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107
| | - Michael J. Reifler
- Contribution from the Departments of Chemistry, University of California, Riverside, California 92521-0403, and Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107
| | - Gary W. Brudvig
- Contribution from the Departments of Chemistry, University of California, Riverside, California 92521-0403, and Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107
| | - David F. Bocian
- Contribution from the Departments of Chemistry, University of California, Riverside, California 92521-0403, and Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107
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24
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Yakovlev AG, Shkuropatov AY, Shuvalov VA. Nuclear wavepacket motion producing a reversible charge separation in bacterial reaction centers. FEBS Lett 2000; 466:209-12. [PMID: 10682829 DOI: 10.1016/s0014-5793(00)01081-4] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The excitation of bacterial reaction centers (RCs) at 870 nm by 30 fs pulses induces the nuclear wavepacket motions on the potential energy surface of the primary electron donor excited state P*, which lead to the fs oscillations in stimulated emission from P* [M.H. Vos, M.R. Jones, C.N. Hunter, J. Breton, J.-C. Lambry and J.-L. Martin (1994) Biochemistry 33, 6750-6757] and in Qy absorption band of the primary electron acceptor, bacteriochlorophyll monomer B(A) [A.M. Streltsov, S.I.E. Vulto, A.Y. Shkuropatov, A.J. Hoff, T.J. Aartsma and V.A. Shuvalov (1998) J. Phys. Chem. B 102, 7293-7298] with a set of fundamental frequencies in the range of 10-300 cm(-1). We have found that in pheophytin-modified RCs, the fs oscillations with frequency around 130 cm(-1) observed in the P*-stimulated emission as well as in the B(A) absorption band at 800 nm are accompanied by remarkable and reversible formation of the 1020 nm absorption band which is characteristic of the radical anion band of bacteriochlorophyll monomer B(A)-. These results are discussed in terms of a reversible electron transfer between P* and B(A) induced by a motion of the wavepacket near the intersection of potential energy surfaces of P* and P+B(A)-, when a maximal value of the Franck-Condon factor is created.
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Affiliation(s)
- A G Yakovlev
- Laboratory of Photobiophysics, Belozersky Institute of Chemical and Physical Biology of Moscow State University, Russia
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25
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Affiliation(s)
- M H Vos
- INSERM U451, Laboratoire d'Optique Appliquée, Ecole Polytechnique-ENSTA, 91761, Palaiseau Cedex, France.
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26
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Stewart DH, Cua A, Bocian DF, Brudvig GW. Selective Raman Scattering from the Core Chlorophylls in Photosystem I via Preresonant Near-Infrared Excitation. J Phys Chem B 1999. [DOI: 10.1021/jp984409a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David H. Stewart
- Department of Chemistry, Sterling Chemistry Laboratory, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, and Department of Chemistry, University of California, Riverside, California 92521-0403
| | - Agnes Cua
- Department of Chemistry, Sterling Chemistry Laboratory, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, and Department of Chemistry, University of California, Riverside, California 92521-0403
| | - David F. Bocian
- Department of Chemistry, Sterling Chemistry Laboratory, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, and Department of Chemistry, University of California, Riverside, California 92521-0403
| | - Gary W. Brudvig
- Department of Chemistry, Sterling Chemistry Laboratory, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, and Department of Chemistry, University of California, Riverside, California 92521-0403
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27
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Toutounji M, Small GJ, Mukamel S. Nonlinear optical response functions for a chromophore with linear and quadratic electron–vibration coupling. J Chem Phys 1999. [DOI: 10.1063/1.478146] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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28
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Ando K, Sumi H. Nonequilibrium Oscillatory Electron Transfer in Bacterial Photosynthesis. J Phys Chem B 1998. [DOI: 10.1021/jp982659l] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Koji Ando
- Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
| | - Hitoshi Sumi
- Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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29
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Rischel C, Spiedel D, Ridge JP, Jones MR, Breton J, Lambry JC, Martin JL, Vos MH. Low frequency vibrational modes in proteins: changes induced by point-mutations in the protein-cofactor matrix of bacterial reaction centers. Proc Natl Acad Sci U S A 1998; 95:12306-11. [PMID: 9770482 PMCID: PMC22827 DOI: 10.1073/pnas.95.21.12306] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
As a step toward understanding their functional role, the low frequency vibrational motions (<300 cm-1) that are coupled to optical excitation of the primary donor bacteriochlorophyll cofactors in the reaction center from Rhodobacter sphaeroides were investigated. The pattern of hydrogen-bonding interaction between these bacteriochlorophylls and the surrounding protein was altered in several ways by mutation of single amino acids. The spectrum of low frequency vibrational modes identified by femtosecond coherence spectroscopy varied strongly between the different reaction center complexes, including between different mutants where the pattern of hydrogen bonds was the same. It is argued that these variations are primarily due to changes in the nature of the individual modes, rather than to changes in the charge distribution in the electronic states involved in the optical excitation. Pronounced effects of point mutations on the low frequency vibrational modes active in a protein-cofactor system have not been reported previously. The changes in frequency observed indicate a strong involvement of the protein in these nuclear motions and demonstrate that the protein matrix can increase or decrease the fluctuations of the cofactor along specific directions.
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Affiliation(s)
- C Rischel
- Institut National de la Santé et de la Recherche Médicale U451, Laboratoire d'Optique Appliquée, Ecole Polytechnique-Ecole Nationale Supérieure de Techniques Avancées, F-91761 Palaiseau Cedex, France
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30
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Streltsov AM, Vulto SIE, Shkuropatov AY, Hoff AJ, Aartsma TJ, Shuvalov VA. BA and BB Absorbance Perturbations Induced by Coherent Nuclear Motions in Reaction Centers from Rhodobacter sphaeroides upon 30-fs Excitation of the Primary Donor. J Phys Chem B 1998. [DOI: 10.1021/jp981514b] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. M. Streltsov
- Biophysics Department, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, Laboratory of Photobiophysics, Belozersky Institute of Chemical and Physical Biology, Moscow State University, Moscow, 119899 Russia, and Institute of Soil Science and Photosynthesis, Russian Academy of Sciences, Pushino, Moscow regoin, 142292, Russia
| | - S. I. E. Vulto
- Biophysics Department, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, Laboratory of Photobiophysics, Belozersky Institute of Chemical and Physical Biology, Moscow State University, Moscow, 119899 Russia, and Institute of Soil Science and Photosynthesis, Russian Academy of Sciences, Pushino, Moscow regoin, 142292, Russia
| | - A. Ya. Shkuropatov
- Biophysics Department, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, Laboratory of Photobiophysics, Belozersky Institute of Chemical and Physical Biology, Moscow State University, Moscow, 119899 Russia, and Institute of Soil Science and Photosynthesis, Russian Academy of Sciences, Pushino, Moscow regoin, 142292, Russia
| | - A. J. Hoff
- Biophysics Department, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, Laboratory of Photobiophysics, Belozersky Institute of Chemical and Physical Biology, Moscow State University, Moscow, 119899 Russia, and Institute of Soil Science and Photosynthesis, Russian Academy of Sciences, Pushino, Moscow regoin, 142292, Russia
| | - T. J. Aartsma
- Biophysics Department, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, Laboratory of Photobiophysics, Belozersky Institute of Chemical and Physical Biology, Moscow State University, Moscow, 119899 Russia, and Institute of Soil Science and Photosynthesis, Russian Academy of Sciences, Pushino, Moscow regoin, 142292, Russia
| | - V. A. Shuvalov
- Biophysics Department, Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, Laboratory of Photobiophysics, Belozersky Institute of Chemical and Physical Biology, Moscow State University, Moscow, 119899 Russia, and Institute of Soil Science and Photosynthesis, Russian Academy of Sciences, Pushino, Moscow regoin, 142292, Russia
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31
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Vos MH, Jones MR, Martin JL. Vibrational coherence in bacterial reaction centers: spectroscopic characterisation of motions active during primary electron transfer. Chem Phys 1998. [DOI: 10.1016/s0301-0104(97)00355-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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32
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Groot ML, Yu JY, Agarwal R, Norris JR, Fleming GR. Three-Pulse Photon Echo Measurements on the Accessory Pigments in the Reaction Center of Rhodobacter sphaeroides. J Phys Chem B 1998. [DOI: 10.1021/jp9808680] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marie-Louise Groot
- Department of Chemistry and the James Franck Research Institute, The University of Chicago, Chicago, Illinois 60637
| | - Jae-Young Yu
- Department of Chemistry and the James Franck Research Institute, The University of Chicago, Chicago, Illinois 60637
| | - Ritesh Agarwal
- Department of Chemistry and the James Franck Research Institute, The University of Chicago, Chicago, Illinois 60637
| | - James R. Norris
- Department of Chemistry and the James Franck Research Institute, The University of Chicago, Chicago, Illinois 60637
| | - Graham R. Fleming
- Department of Chemistry and the James Franck Research Institute, The University of Chicago, Chicago, Illinois 60637
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33
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Cua A, Stewart DH, Brudvig GW, Bocian DF. Selective Resonance Raman Scattering from Chlorophyll Z in Photosystem II via Excitation into the Near-Infrared Absorption Band of the Cation. J Am Chem Soc 1998. [DOI: 10.1021/ja980207g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Agnes Cua
- Department of Chemistry, University of California Riverside, California 92521-0403 Department of Chemistry, Yale University New Haven, Connecticut 06520-8107
| | - David H. Stewart
- Department of Chemistry, University of California Riverside, California 92521-0403 Department of Chemistry, Yale University New Haven, Connecticut 06520-8107
| | - Gary W. Brudvig
- Department of Chemistry, University of California Riverside, California 92521-0403 Department of Chemistry, Yale University New Haven, Connecticut 06520-8107
| | - David F. Bocian
- Department of Chemistry, University of California Riverside, California 92521-0403 Department of Chemistry, Yale University New Haven, Connecticut 06520-8107
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34
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Vos MH, Breton J, Martin JL. Electronic Energy Transfer within the Hexamer Cofactor System of Bacterial Reaction Centers. J Phys Chem B 1997. [DOI: 10.1021/jp971486h] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Marten H. Vos
- Laboratoire d'Optique Appliquée, INSERM U451, Ecole Polytechnique-ENSTA, 91761 Palaiseau Cedex, France, and SBE/DBCM, CEA de Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Jacques Breton
- Laboratoire d'Optique Appliquée, INSERM U451, Ecole Polytechnique-ENSTA, 91761 Palaiseau Cedex, France, and SBE/DBCM, CEA de Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Jean-Louis Martin
- Laboratoire d'Optique Appliquée, INSERM U451, Ecole Polytechnique-ENSTA, 91761 Palaiseau Cedex, France, and SBE/DBCM, CEA de Saclay, 91191 Gif-sur-Yvette Cedex, France
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35
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Zhou C, Diers JR, Bocian DF. Qy-Excitation Resonance Raman Spectra of Chlorophyll a and Related Complexes. Normal Mode Characteristics of the Low-Frequency Vibrations. J Phys Chem B 1997. [DOI: 10.1021/jp971965g] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chengli Zhou
- Department of Chemistry, University of California, Riverside, California 92521-0403
| | - James R. Diers
- Department of Chemistry, University of California, Riverside, California 92521-0403
| | - David F. Bocian
- Department of Chemistry, University of California, Riverside, California 92521-0403
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36
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37
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Schellenberg P, Louwe RJW, Shochat S, Gast P, Aartsma TJ. Accumulated Photon Echo Studies on Bacterial Photosynthetic Reaction Centers: Charge-Transfer Rate Distribution and Electron−Phonon Coupling. J Phys Chem B 1997. [DOI: 10.1021/jp9714577] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- P. Schellenberg
- Department of Biophysics, University of Leiden, P.O. Box 9504, 2300 RA Leiden, The Netherlands
| | - R. J. W. Louwe
- Department of Biophysics, University of Leiden, P.O. Box 9504, 2300 RA Leiden, The Netherlands
| | - S. Shochat
- Department of Biophysics, University of Leiden, P.O. Box 9504, 2300 RA Leiden, The Netherlands
| | - P. Gast
- Department of Biophysics, University of Leiden, P.O. Box 9504, 2300 RA Leiden, The Netherlands
| | - T. J. Aartsma
- Department of Biophysics, University of Leiden, P.O. Box 9504, 2300 RA Leiden, The Netherlands
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38
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Souaille M, Marchi M. Nuclear Dynamics and Electronic Transition in a Photosynthetic Reaction Center. J Am Chem Soc 1997. [DOI: 10.1021/ja943841c] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marc Souaille
- Contribution from the Centre Européen de Calcul Atomique et Moleculaire (CECAM), Ecole Normale Superieure de Lyon, 46 Allée d'Italie, 69364 Lyon, France, and Section de Biophysique des Protéines et des Membranes, DBCM, DSV, CEA, Centre d'Études, Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Massimo Marchi
- Contribution from the Centre Européen de Calcul Atomique et Moleculaire (CECAM), Ecole Normale Superieure de Lyon, 46 Allée d'Italie, 69364 Lyon, France, and Section de Biophysique des Protéines et des Membranes, DBCM, DSV, CEA, Centre d'Études, Saclay, 91191 Gif-sur-Yvette Cedex, France
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39
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Cherepy NJ, Shreve AP, Moore LJ, Boxer SG, Mathies RA. Electronic and Nuclear Dynamics of the Accessory Bacteriochlorophylls in Bacterial Photosynthetic Reaction Centers from Resonance Raman Intensities. J Phys Chem B 1997. [DOI: 10.1021/jp963051k] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nerine J. Cherepy
- Department of Chemistry, University of California, Berkeley, California 94720, and Department of Chemistry, Stanford University, Stanford, California 94305
| | - Andrew P. Shreve
- Department of Chemistry, University of California, Berkeley, California 94720, and Department of Chemistry, Stanford University, Stanford, California 94305
| | - Laura J. Moore
- Department of Chemistry, University of California, Berkeley, California 94720, and Department of Chemistry, Stanford University, Stanford, California 94305
| | - Steven G. Boxer
- Department of Chemistry, University of California, Berkeley, California 94720, and Department of Chemistry, Stanford University, Stanford, California 94305
| | - Richard A. Mathies
- Department of Chemistry, University of California, Berkeley, California 94720, and Department of Chemistry, Stanford University, Stanford, California 94305
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40
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Lin CY, Blackwood ME, Kumble R, Hu S, Spiro TG. Structural Changes for π-Radicals of Free-Base Tetraphenylbacteriochlorin: A Model for the Electron Donor and Acceptor in Bacterial Reaction Centers. J Phys Chem B 1997. [DOI: 10.1021/jp963923i] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ching-Yao Lin
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | | | - Ranjit Kumble
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - Songzhou Hu
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - Thomas G. Spiro
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
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41
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Czarnecki K, Chynwat V, Erickson JP, Frank HA, Bocian DF. Identification of the Magnesium−Histidine Stretching Vibration of the Bacteriochlorophyll Cofactors in Photosynthetic Reaction Centers via 15N-Labeling of the Histidines. J Am Chem Soc 1997. [DOI: 10.1021/ja964107r] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazimierz Czarnecki
- Department of Chemistry, University of California Riverside, California 92521 Department of Chemistry, University of Connecticut Storrs, Connecticut 06269
| | - Veeradej Chynwat
- Department of Chemistry, University of California Riverside, California 92521 Department of Chemistry, University of Connecticut Storrs, Connecticut 06269
| | - Joy P. Erickson
- Department of Chemistry, University of California Riverside, California 92521 Department of Chemistry, University of Connecticut Storrs, Connecticut 06269
| | - Harry A. Frank
- Department of Chemistry, University of California Riverside, California 92521 Department of Chemistry, University of Connecticut Storrs, Connecticut 06269
| | - David F. Bocian
- Department of Chemistry, University of California Riverside, California 92521 Department of Chemistry, University of Connecticut Storrs, Connecticut 06269
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42
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Lin CY, Spiro TG. Resonance Raman, Infrared, and Normal Coordinate Analysis of Free-Base Tetraphenylbacteriochlorin: A Model for Bacteriopheophytins. J Phys Chem B 1997. [DOI: 10.1021/jp962479g] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ching-Yao Lin
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - Thomas G. Spiro
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
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43
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Czarnecki K, Diers JR, Chynwat V, Erickson JP, Frank HA, Bocian DF. Characterization of the Strongly Coupled, Low-Frequency Vibrational Modes of the Special Pair of Photosynthetic Reaction Centers via Isotopic Labeling of the Cofactors. J Am Chem Soc 1997. [DOI: 10.1021/ja963281c] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kazimierz Czarnecki
- Contribution from the Department of Chemistry, University of California, Riverside, California 92521, and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - James R. Diers
- Contribution from the Department of Chemistry, University of California, Riverside, California 92521, and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - Veeradej Chynwat
- Contribution from the Department of Chemistry, University of California, Riverside, California 92521, and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - Joy P. Erickson
- Contribution from the Department of Chemistry, University of California, Riverside, California 92521, and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - Harry A. Frank
- Contribution from the Department of Chemistry, University of California, Riverside, California 92521, and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - David F. Bocian
- Contribution from the Department of Chemistry, University of California, Riverside, California 92521, and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
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44
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Laporte LL, Palaniappan V, Davis DG, Kirmaier C, Schenck CC, Holten D, Bocian DF. Influence of Electronic Asymmetry on the Spectroscopic and Photodynamic Properties of the Primary Electron Donor in the Photosynthetic Reaction Center. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp961658v] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laurent L. Laporte
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, Department of Chemistry, University of California at Riverside, Riverside, California 92521, and Department of Biochemistry, Colorado State University, Fort Collins, Colorado 80523
| | - Vaithianathan Palaniappan
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, Department of Chemistry, University of California at Riverside, Riverside, California 92521, and Department of Biochemistry, Colorado State University, Fort Collins, Colorado 80523
| | - Dianna G. Davis
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, Department of Chemistry, University of California at Riverside, Riverside, California 92521, and Department of Biochemistry, Colorado State University, Fort Collins, Colorado 80523
| | - Christine Kirmaier
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, Department of Chemistry, University of California at Riverside, Riverside, California 92521, and Department of Biochemistry, Colorado State University, Fort Collins, Colorado 80523
| | - Craig C. Schenck
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, Department of Chemistry, University of California at Riverside, Riverside, California 92521, and Department of Biochemistry, Colorado State University, Fort Collins, Colorado 80523
| | - Dewey Holten
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, Department of Chemistry, University of California at Riverside, Riverside, California 92521, and Department of Biochemistry, Colorado State University, Fort Collins, Colorado 80523
| | - David F. Bocian
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, Department of Chemistry, University of California at Riverside, Riverside, California 92521, and Department of Biochemistry, Colorado State University, Fort Collins, Colorado 80523
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45
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Jonas DM, Lang MJ, Nagasawa Y, Joo T, Fleming GR. Pump−Probe Polarization Anisotropy Study of Femtosecond Energy Transfer within the Photosynthetic Reaction Center of Rhodobacter sphaeroides R26. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp960708t] [Citation(s) in RCA: 155] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David M. Jonas
- Department of Chemistry and the James Franck Institute, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Matthew J. Lang
- Department of Chemistry and the James Franck Institute, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Yutaka Nagasawa
- Department of Chemistry and the James Franck Institute, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Taiha Joo
- Department of Chemistry and the James Franck Institute, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Graham R. Fleming
- Department of Chemistry and the James Franck Institute, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
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46
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Diers JR, Zhu Y, Blankenship RE, Bocian DF. Qy-excitation resonance Raman spectra of chlorophyll a and bacteriochlorophyll c/d aggregates. Effects of peripheral substituents on the low-frequency vibrational characteristics. THE JOURNAL OF PHYSICAL CHEMISTRY 1996; 100:8573-9. [PMID: 11539301 DOI: 10.1021/jp953544+] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Low-frequency (80-700 cm-1) Qy-excitation resonance Raman (RR) spectra are reported for thin-solid-film aggregates of several chlorophyll (Chl) a and bacteriochlorophyll (BChl) c/d pigments. The pigments include Chl a, pyrochlorophyll a (PChl a), methylpyrochloropyllide a (MPChl a), methylbacteriochloropyllide d (MBChl d), [E,M] BChl cS, [E,E] BChl cF, and [P,E] BChl cF. The BChl c/d's are the principal constituents of the chlorosomal light-harvesting apparatus of green photosynthetic bacteria. Together, the various Chl a's and BChl c/d's represent a series in which the peripheral substituent groups on the chlorin macrocycle are varied in systematic fashion. All of the Chl a and BChl c/d aggregates exhibit rich low-frequency vibrational patterns. In the case of the BChl c/d's, certain modes in the very low-frequency region (100-200 cm-1) experience exceptionally strong Raman intensity enhancements. The frequencies of these modes are qualitatively similar to those of oscillations observed in femtosecond optical experiments on chlorosomes. The RR data indicate that the low-frequency vibrations are best characterized as intramolecular out-of-plane deformations of the chlorin macrocycle rather than intermolecular modes. The coupling of the out-of-plane modes in turn implies that the Qy electronic transition(s) of the aggregate have out-of-plane character. The RR spectra of the BChl c/d's also reveal that the nature of the alkyl substituents at the 8 and 12 positions of the macrocycle plays an important role in determining the detailed features of the low-frequency vibrational patterns. The frequencies of the modes are particularly sensitive to larger substituent groups whose conformations may be more easily perturbed in the tightly packed aggregates. These factors also make aggregates of pigments containing larger substituents more susceptible to structural, electronic, and vibrational inhomgeneities. Collectively, the RR studies of the various pigments delineate the factors which influence the low-frequency vibrational characteristics of chlorosomal aggregates.
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Affiliation(s)
- J R Diers
- Department of Chemistry, University of California, Riverside 92521-0403, USA
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Cherepy NJ, Du M, Holzwarth AR, Mathies RA. Near-Infrared Resonance Raman Spectra of Chlorosomes: Probing Nuclear Coupling in Electronic Energy Transfer. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp952992e] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nerine J. Cherepy
- Department of Chemistry, University of California, Berkeley, California 94720, and The Max-Planck-Institut für Strahlenchemie, Stiftstrasse 34-36, D-45470 Mülheim a.d. Ruhr, Germany
| | - Mei Du
- Department of Chemistry, University of California, Berkeley, California 94720, and The Max-Planck-Institut für Strahlenchemie, Stiftstrasse 34-36, D-45470 Mülheim a.d. Ruhr, Germany
| | - Alfred R. Holzwarth
- Department of Chemistry, University of California, Berkeley, California 94720, and The Max-Planck-Institut für Strahlenchemie, Stiftstrasse 34-36, D-45470 Mülheim a.d. Ruhr, Germany
| | - Richard A. Mathies
- Department of Chemistry, University of California, Berkeley, California 94720, and The Max-Planck-Institut für Strahlenchemie, Stiftstrasse 34-36, D-45470 Mülheim a.d. Ruhr, Germany
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Cherepy NJ, Holzwarth AR, Mathies RA. Near-infrared resonance Raman spectra of Chloroflexus aurantiacus photosynthetic reaction centers. Biochemistry 1995; 34:5288-93. [PMID: 7711050 DOI: 10.1021/bi00015a044] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Resonance Raman spectra of the photosynthetic reaction center isolated from the green bacterium Chloroflexus aurantiacus have been obtained with excitation in the near-infrared absorption bands of the special pair (P) and the accessory bacteriochlorophyll (B) using shifted-excitation Raman difference spectroscopy (SERDS). These spectra are compared with the previously reported Raman spectra of P and B in reaction centers from the purple bacterium Rhodobacter sphaeroides. The spectra of P and B from the two species are nearly identical. Common and distinctive attributes of these spectra include enhanced low-frequency (30-200 cm-1) modes in P and the absence of strong Raman activity in modes higher than 1200 cm-1 in both P and B. Also, the absolute scattering cross sections with excitation in the P band are unusually weak in both reaction centers, indicating that their excited states are rapidly vibronically dephased. The striking similarities between the P and B spectra in reaction centers from two very different bacterial species suggest that the common nuclear and electronic dynamics identified here are characteristic of photosynthetic reaction centers.
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Affiliation(s)
- N J Cherepy
- Department of Chemistry, University of California, Berkeley 94720, USA
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Groot ML, Peterman EJ, van Stokkum IH, Dekker JP, van Grondelle R. Triplet and fluorescing states of the CP47 antenna complex of photosystem II studied as a function of temperature. Biophys J 1995; 68:281-90. [PMID: 7711252 PMCID: PMC1281686 DOI: 10.1016/s0006-3495(95)80186-4] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Fluorescence emission and triplet-minus-singlet (T-S) absorption difference spectra of the CP47 core antenna complex of photosystem II were measured as a function of temperature and compared to those of chlorophyll a in Triton X-100. Two spectral species were found in the chlorophyll T-S spectra of CP47, which may arise from a difference in ligation of the pigments or from an additional hydrogen bond, similar to what has been found for Chl molecules in a variety of solvents. The T-S spectra show that the lowest lying state in CP47 is at approximately 685 nm and gives rise to fluorescence at 690 nm at 4 K. The fluorescence quantum yield is 0.11 +/- 0.03 at 4 K, the chlorophyll triplet yield is 0.16 +/- 0.03. Carotenoid triplets are formed efficiently at 4 K through triplet transfer from chlorophyll with a yield of 0.15 +/- 0.02. The major decay channel of the lowest excited state in CP47 is internal conversion, with a quantum yield of about 0.58. Increase of the temperature results in a broadening and blue shift of the spectra due to the equilibration of the excitation over the antenna pigments. Upon increasing the temperature, a decrease of the fluorescence and triplet yields is observed to, at 270 K, a value of about 55% of the low temperature value. This decrease is significantly larger than of chlorophyll a in Triton X-100. Although the coupling to low-frequency phonon or vibration modes of the pigments is probably intermediate in CP47, the temperature dependence of the triplet and fluorescence quantum yield can be modeled using the energy gap law in the strong coupling limit of Englman and Jortner (1970. J. Mol. Phys. 18:145-164) for non-radiative decays. This yields for CP47 an average frequency of the promoting/accepting modes of 350 cm-1 with an activation energy of 650 cm-1 for internal conversion and activationless intersystem crossing to the triplet state through a promoting mode with a frequency of 180 cm-1. For chlorophyll a in Triton X-100 the average frequency of the promoting modes for non-radiative decay is very similar, but the activation energy (300 cm-1) is significantly smaller.
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Affiliation(s)
- M L Groot
- Department of Physics and Astronomy, Vrije Universiteit, Amsterdam, The Netherlands
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Lutz M. Red-band resonance raman spectroscopy of chlorophyll cofactors in photosynthetic proteins. ACTA ACUST UNITED AC 1995. [DOI: 10.1002/bspy.350010503] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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