1
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Li H, Jiang G, Jia M, Cao S, Zhang S, Chen J, Sun H, Xu J, Knutson JR. Ultrafast Förster resonance energy transfer between tyrosine and tryptophan: potential contributions to protein-water dynamics measurements. Phys Chem Chem Phys 2022; 24:18055-18066. [PMID: 35861343 DOI: 10.1039/d2cp02139k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Ultrafast Förster Resonance Energy Transfer (FRET) between Tyrosine (Tyr, Y) and Tryptophan (Trp, W) in the model peptides Trp-(Pro)n-Tyr (WPnY) has been investigated using a femtosecond up-conversion spectrophotofluorometer. The ultrafast energy transfer process (<100 ps) in short peptides (WY, WPY and WP2Y) has been resolved. In fact, this FRET rate is found to be mixed with the rates of solvent relaxation (SR), ultrafast population decay (QSSQ) and other lifetime components. To further dissect and analyze the FRET, a spectral working model is constructed, and the contribution of a FRET lifetime is separated by reconciling the shapes of decay associated spectra (DAS). Surprisingly, FRET efficiency did not decrease monotonically with the growth of the peptide chain (as expected) but increased first and then decreased. The highest FRET efficiency occurred in peptide WPY. The kinetic results have been accompanied with molecular dynamics simulations that reconcile and explain this strange phenomenon: due to the strong interaction between amino acids, the distance between the donor and receptor in peptide WPY is actually closest, resulting in the fastest FRET. In addition, the FRET lifetimes (τcal) were estimated within the molecular dynamics simulations, and they were consistent with the lifetimes (τexp) separated out by the experimental measurements and the DAS working model. This benchmark study has implications for both previous and future studies of protein ultrafast dynamics. The approach taken can be generalized for the study of proximate tyrosine and tryptophan in proteins and it suggests spectral strategies for extracting mixed rates in other complex FRET problems.
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Affiliation(s)
- Haoyang Li
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
| | - Guanyu Jiang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
| | - Menghui Jia
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
| | - Simin Cao
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
| | - Sanjun Zhang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
| | - Jinquan Chen
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
| | - Haitao Sun
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
| | - Jianhua Xu
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
| | - Jay R Knutson
- Laboratory of Advanced Microscopy & Biophotonics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.
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2
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Gebicki JM, Nauser T. Initiation and Prevention of Biological Damage by Radiation-Generated Protein Radicals. Int J Mol Sci 2021; 23:ijms23010396. [PMID: 35008823 PMCID: PMC8745036 DOI: 10.3390/ijms23010396] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 12/27/2021] [Accepted: 12/27/2021] [Indexed: 12/23/2022] Open
Abstract
Ionizing radiations cause chemical damage to proteins. In aerobic aqueous solutions, the damage is commonly mediated by the hydroxyl free radicals generated from water, resulting in formation of protein radicals. Protein damage is especially significant in biological systems, because proteins are the most abundant targets of the radiation-generated radicals, the hydroxyl radical-protein reaction is fast, and the damage usually results in loss of their biological function. Under physiological conditions, proteins are initially oxidized to carbon-centered radicals, which can propagate the damage to other molecules. The most effective endogenous antioxidants, ascorbate, GSH, and urate, are unable to prevent all of the damage under the common condition of oxidative stress. In a promising development, recent work demonstrates the potential of polyphenols, their metabolites, and other aromatic compounds to repair protein radicals by the fast formation of less damaging radical adducts, thus potentially preventing the formation of a cascade of new reactive species.
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Affiliation(s)
- Janusz M. Gebicki
- Department of Biological Sciences, Macquarie University, Sydney 2109, Australia
- Correspondence:
| | - Thomas Nauser
- Departement für Chemie und Angewandte Biowissenschaften, Eidgenössische Technische Hochschule, 8093 Zurich, Switzerland;
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3
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Schöneich C. Photo-induced fragmentation of tyrosine side chains in IgG4-Fc: Effect of protein sequence, conformation and glycan structure. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2021. [DOI: 10.1016/j.jpap.2021.100049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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4
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Koronkiewicz B, Swierk J, Regan K, Mayer JM. Shallow Distance Dependence for Proton-Coupled Tyrosine Oxidation in Oligoproline Peptides. J Am Chem Soc 2020; 142:12106-12118. [PMID: 32510937 PMCID: PMC7545454 DOI: 10.1021/jacs.0c01429] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We have explored the kinetic effect of increasing electron transfer (ET) distance in a biomimetic, proton-coupled electron-transfer (PCET) system. Biological ET often occurs simultaneously with proton transfer (PT) in order to avoid the high-energy, charged intermediates resulting from the stepwise transfer of protons and electrons. These concerted proton-electron-transfer (CPET) reactions are implicated in numerous biological ET pathways. In many cases, PT is coupled to long-range ET. While many studies have shown that the rate of ET is sensitive to the distance between the electron donor and acceptor, extensions to biological CPET reactions are sparse. The possibility of a unique ET distance dependence for CPET reactions deserves further exploration, as this could have implications for how we understand biological ET. We therefore explored the ET distance dependence for the CPET oxidation of tyrosine in a model system. We prepared a series of metallopeptides with a tyrosine separated from a Ru(bpy)32+ complex by an oligoproline bridge of increasing length. Rate constants for intramolecular tyrosine oxidation were measured using the flash-quench transient absorption technique in aqueous solutions. The rate constants for tyrosine oxidation decreased by 125-fold with three added proline residues between tyrosine and the oxidant. By comparison, related intramolecular ET rate constants in very similar constructs were reported to decrease by 4-5 orders of magnitude over the same number of prolines. The observed shallow distance dependence for tyrosine oxidation is proposed to originate in part from the requirement for stronger oxidants, leading to a smaller hole-transfer effective tunneling barrier height. The shallow distance dependence observed here and extensions to distance-dependent CPET reactions have potential implications for long-range charge transfers.
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Affiliation(s)
- Brian Koronkiewicz
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - John Swierk
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Kevin Regan
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - James M Mayer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
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5
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Filipiak P, Bobrowski K, Hug GL, Pogocki D, Schöneich C, Marciniak B. Formation of a Three-Electron Sulfur–Sulfur Bond as a Probe for Interaction between Side Chains of Methionine Residues. J Phys Chem B 2016; 120:9732-44. [DOI: 10.1021/acs.jpcb.6b06494] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Piotr Filipiak
- Faculty
of Chemistry, Adam Mickiewicz University, 61-614 Poznan, Poland
| | - Krzysztof Bobrowski
- Institute of Nuclear Chemistry and Technology, 03-195 Warsaw, Poland
- Radiation
Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Gordon L. Hug
- Faculty
of Chemistry, Adam Mickiewicz University, 61-614 Poznan, Poland
- Radiation
Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Dariusz Pogocki
- Faculty
of Biology and Agriculture, University of Rzeszow, 35-601 Rzeszow, Poland
| | - Christian Schöneich
- School
of Pharmacy, Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
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6
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1H CIDNP study of the kinetics and mechanism of the reversible photoinduced oxidation of tryptophyl-tryptophan dipeptide in aqueous solutions. Russ Chem Bull 2012. [DOI: 10.1007/s11172-011-0396-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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Brown AM, Zondlo NJ. A propensity scale for type II polyproline helices (PPII): aromatic amino acids in proline-rich sequences strongly disfavor PPII due to proline-aromatic interactions. Biochemistry 2012; 51:5041-51. [PMID: 22667692 DOI: 10.1021/bi3002924] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Type II polyproline helices (PPII) are a fundamental secondary structure of proteins, common in globular and nonglobular regions and important in cellular signaling. We developed a propensity scale for PPII using a host-guest system with sequence Ac-GPPXPPGY-NH(2), where X represents any amino acid. We found that proline has the highest PPII propensity, but most other amino acids display significant PPII propensities. The PPII propensity of leucine was the highest of all propensities of non-proline residues. Alanine and residues with linear side chains displayed the next highest PPII propensities. Three classes of residues displayed lower PPII propensities: β-branched amino acids (Thr, Val, and Ile), short amino acids with polar side chains (Asn, protonated Asp, Ser, Thr, and Cys), and aromatic amino acids (Phe, Tyr, and Trp). tert-Leucine particularly disfavored PPII. The basis of the low PPII propensities of aromatic amino acids in this context was significant cis-trans isomerism, with proline-rich peptides containing aromatic residues exhibiting 45-60% cis amide bonds, due to Pro-cis-Pro-aromatic and aromatic-cis-Pro amide bonds.
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Affiliation(s)
- Alaina M Brown
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
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8
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Petruk AA, Bartesaghi S, Trujillo M, Estrin DA, Murgida D, Kalyanaraman B, Marti MA, Radi R. Molecular basis of intramolecular electron transfer in proteins during radical-mediated oxidations: computer simulation studies in model tyrosine-cysteine peptides in solution. Arch Biochem Biophys 2012; 525:82-91. [PMID: 22640642 DOI: 10.1016/j.abb.2012.05.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 05/05/2012] [Accepted: 05/20/2012] [Indexed: 11/15/2022]
Abstract
Experimental studies in hemeproteins and model Tyr/Cys-containing peptides exposed to oxidizing and nitrating species suggest that intramolecular electron transfer (IET) between tyrosyl radicals (Tyr-O(·)) and Cys residues controls oxidative modification yields. The molecular basis of this IET process is not sufficiently understood with structural atomic detail. Herein, we analyzed using molecular dynamics and quantum mechanics-based computational calculations, mechanistic possibilities for the radical transfer reaction in Tyr/Cys-containing peptides in solution and correlated them with existing experimental data. Our results support that Tyr-O(·) to Cys radical transfer is mediated by an acid/base equilibrium that involves deprotonation of Cys to form the thiolate, followed by a likely rate-limiting transfer process to yield cysteinyl radical and a Tyr phenolate; proton uptake by Tyr completes the reaction. Both, the pKa values of the Tyr phenol and Cys thiol groups and the energetic and kinetics of the reversible IET are revealed as key physico-chemical factors. The proposed mechanism constitutes a case of sequential, acid/base equilibrium-dependent and solvent-mediated, proton-coupled electron transfer and explains the dependency of oxidative yields in Tyr/Cys peptides as a function of the number of alanine spacers. These findings contribute to explain oxidative modifications in proteins that contain sequence and/or spatially close Tyr-Cys residues.
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Affiliation(s)
- Ariel A Petruk
- Instituto Superior de Investigaciones Biológicas (CONICET-UNT), Chacabuco 461, S.M. de Tucumán, Tucumán, T4000CAN, Argentina
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9
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Morozova OB, Hore PJ, Sagdeev RZ, Yurkovskaya AV. Intramolecular Electron Transfer in Lysozyme Studied by Time-Resolved Chemically Induced Dynamic Nuclear Polarization. J Phys Chem B 2005; 109:21971-8. [PMID: 16853855 DOI: 10.1021/jp053394v] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The kinetics of the chemically induced dynamic nuclear polarization (CIDNP) produced in reactions of hen lysozyme with photosensitizers have been studied for the native state of the protein at pH 3.8 and for two denatured states. The latter were generated by raising the temperature to 80 degrees C or by combining a temperature rise (to 50 degrees C) with the addition of chemical denaturant (10 M urea). Detailed analysis of the CIDNP time dependence on a microsecond time scale revealed that, in both denatured states, intramolecular electron transfer (IET) from a tyrosine residue to the cation radical of a tryptophan residue (rate constant k(f)) is highly efficient and plays a decisive role in the evolution of the nuclear polarization. To describe the observed CIDNP kinetics with a self-consistent set of parameters, IET in the reverse direction, from a tryptophan residue to a tyrosine residue radical (rate constant k(r)), has also to be taken into account. The IET rate constants determined by analysis of the CIDNP kinetics are, at 80 degrees C: k(f) = 1 x 10(5) s(-1) and k(r) = 1 x 10(4) s(-1); at 50 degrees C in the presence of 10 M urea: k(f) = 7 x 10(4) s(-1), k(r) = 1 x 10(4) s(-1). IET does not appear to influence the CIDNP kinetics of the native state.
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Affiliation(s)
- Olga B Morozova
- International Tomography Center of SB RAS, 630090, Institutskaya 3a, Novosibirsk, Russia
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10
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Giese B, Napp M, Jacques O, Boudebous H, Taylor AM, Wirz J. Multistep Electron Transfer in Oligopeptides: Direct Observation of Radical Cation Intermediates. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500391] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Giese B, Napp M, Jacques O, Boudebous H, Taylor AM, Wirz J. Multistep Electron Transfer in Oligopeptides: Direct Observation of Radical Cation Intermediates. Angew Chem Int Ed Engl 2005; 44:4073-5. [PMID: 15915526 DOI: 10.1002/anie.200500391] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bernd Giese
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056 Basel, Switzerland.
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12
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Tang J, Li XY, Fu KX, Liu JF, Lu SZ. Intramolecular electron transfer in cyclopeptide involving tryptophan and tyrosine and corrected two-sphere model for solvent reorganization energy. Chem Phys 2005. [DOI: 10.1016/j.chemphys.2004.11.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Galian RE, Pastor-Pérez L, Miranda MA, Pérez-Prieto J. Intramolecular Electron Transfer between Tyrosine and Tryptophan Photosensitized by a Chiral π,π* Aromatic Ketone. Chemistry 2005; 11:3443-8. [PMID: 15798972 DOI: 10.1002/chem.200401118] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The photochemical reaction of Trp and Tyr and related peptides with Suprofen (SUP) as sensitizer in H2O/CH3CN (28:1 v/v) solutions has been studied by time-resolved spectroscopy. The results show that SUP induces oxidation of both Trp and Tyr, as well as intramolecular-ET reactions in the related peptides. The influence of photosensitizer configuration on the involved processes has been studied by using the enantiomerically pure compounds. A significant chiral recognition is observed in which the concentration of the radicals formed after triplet quenching depends on the configuration of the chiral center; the quenching process is higher when using the (R)-SUP enantiomer.
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Affiliation(s)
- Raquel E Galian
- Departamento de Química Orgánica/ICMOL, Universidad de Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
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14
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Morozova OB, Yurkovskaya AV, Sagdeev RZ. Reversibility of Electron Transfer in Tryptophan−Tyrosine Peptide in Acidic Aqueous Solution Studied by Time-Resolved CIDNP. J Phys Chem B 2005; 109:3668-75. [PMID: 16851405 DOI: 10.1021/jp047151z] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Time-resolved chemically induced dynamic nuclear polarization (CIDNP) has been used to study electron transfer reactions in tryptophan-tyrosine peptide under strongly acidic conditions. It is demonstrated that a decrease in pH from 2.4 to 1.6 reduces the overall efficiency of intramolecular electron transfer from the tyrosine residue to the oxidized tryptophan residue. A detailed analysis of the CIDNP kinetics revealed that the rate constant of this reaction k(f) stays unchanged upon pH variation, whereas the rate constant of electron transfer in the opposite direction k(r) increases with decreasing pH. The values of the rate constants extracted from model simulations are as follows: k(f) = (5.5 +/- 0.5) x 10(5) s(-1); k(r) = (5.5 +/- 1.0) x 10(4) s(-1) at pH 2.4, (1.2 +/- 0.2) x 10(5) s(-1) at pH 2.0, and (3.2 +/- 0.4) x 10(5) s(-1) at pH 1.6. The pH dependence of log K = log(k(f)/k(r)) is linear and allows for the determination of the difference between the one-electron reduction potentials of the tryptophanyl and tyrosyl radicals in the peptide. The efficiency of IET in acidic aqueous solution containing 10 M urea-d(4) was estimated.
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Affiliation(s)
- Olga B Morozova
- International Tomography Center of SB RAS, Institutskaya 3a, 630090 Novosibirsk, Russia
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15
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Kraatz HB, Bediako-Amoa I, Gyepi-Garbrah SH, Sutherland TC. Electron Transfer through H-bonded Peptide Assemblies. J Phys Chem B 2004. [DOI: 10.1021/jp047900c] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Heinz-Bernhard Kraatz
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
| | - Irene Bediako-Amoa
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
| | - Samuel H. Gyepi-Garbrah
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
| | - Todd C. Sutherland
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
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16
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Bediako-Amoa I, Sutherland TC, Li CZ, Silerova R, Kraatz HB. Electrochemical and Surface Study of Ferrocenoyl Oligopeptides. J Phys Chem B 2003. [DOI: 10.1021/jp0368785] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Irene Bediako-Amoa
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
| | - Todd C. Sutherland
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
| | - Chen-Zhong Li
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
| | - Roberta Silerova
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
| | - Heinz-Bernhard Kraatz
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
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17
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Kröger-Ohlsen MV, Østdal H, Andersen ML. The effect of pH on the oxidation of bovine serum albumin by hypervalent myoglobin species. Arch Biochem Biophys 2003; 416:202-8. [PMID: 12893298 DOI: 10.1016/s0003-9861(03)00317-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Bovine serum albumin (BSA) was used as a probe for the oxidation of proteins by hypervalent myoglobin species in solutions with pH from 5.3 to 7.7. The reaction between perferrylmyoglobin, *MbFe(IV)=O, and BSA was studied by activating metmyoglobin with equimolar amounts of hydrogen peroxide in the presence of BSA. A minor pH dependence was observed as judged from the formation of BSA-centered radicals, which were monitored at room temperature by electron spin resonance spectroscopy, and the formation of dityrosine. The reaction between ferrylmyoglobin, MbFe(IV)=O, and BSA was pH-dependent. BSA-centered radicals and dityrosine were formed in low levels at neutral pH and increased at low pH to the same levels as observed in the reaction of *MbFe(IV)=O with BSA. The present results demonstrate that protein-centered radicals can be formed from the non-radical MbFe(IV)=O under mildly acidic conditions, and this should be taken into account when considering oxidation in cellular compartments of low pH and in meat-related products.
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Affiliation(s)
- Maiken V Kröger-Ohlsen
- Food Chemistry, Department of Dairy and Food Science, The Royal Veterinary and Agricultural University, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark.
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18
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Morozova OB, Yurkovskaya AV, Vieth HM, Sagdeev RZ. Intramolecular Electron Transfer in Tryptophan−Tyrosine Peptide in Photoinduced Reaction in Aqueous Solution. J Phys Chem B 2003. [DOI: 10.1021/jp0265283] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olga B. Morozova
- International Tomography Center, 630090, Institutskaya 3a, Novosibirsk, Russia, and Institute of Experimental Physics, Free University of Berlin, D-14195, Germany
| | - Alexandra V. Yurkovskaya
- International Tomography Center, 630090, Institutskaya 3a, Novosibirsk, Russia, and Institute of Experimental Physics, Free University of Berlin, D-14195, Germany
| | - Hans-Martin Vieth
- International Tomography Center, 630090, Institutskaya 3a, Novosibirsk, Russia, and Institute of Experimental Physics, Free University of Berlin, D-14195, Germany
| | - Renad Z. Sagdeev
- International Tomography Center, 630090, Institutskaya 3a, Novosibirsk, Russia, and Institute of Experimental Physics, Free University of Berlin, D-14195, Germany
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19
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MOROZOVA OB, YURKOVSKAYA AV, TSENTALOVICH YP, FORBES MDE, HORE PJ, SAGDEEV RZ. Time resolved CIDNP study of electron transfer reactions in proteins and model compounds. Mol Phys 2002. [DOI: 10.1080/00268970110109970] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Morozova OB, Yurkovskaya AV, Tsentalovich YP, Forbes MDE, Sagdeev RZ. Time-Resolved CIDNP Study of Intramolecular Charge Transfer in the Dipeptide Tryptophan-Tyrosine. J Phys Chem B 2002. [DOI: 10.1021/jp011858t] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olga B. Morozova
- International Tomography Center, 630090, Institutskaya 3a, Novosibirsk, Russia, and Venable and Kenan Laboratories, Department of Chemistry, CB 3290, University of North Carolina, Chapel Hill, North Carolina 27599
| | - Alexandra V. Yurkovskaya
- International Tomography Center, 630090, Institutskaya 3a, Novosibirsk, Russia, and Venable and Kenan Laboratories, Department of Chemistry, CB 3290, University of North Carolina, Chapel Hill, North Carolina 27599
| | - Yuri P. Tsentalovich
- International Tomography Center, 630090, Institutskaya 3a, Novosibirsk, Russia, and Venable and Kenan Laboratories, Department of Chemistry, CB 3290, University of North Carolina, Chapel Hill, North Carolina 27599
| | - Malcolm D. E. Forbes
- International Tomography Center, 630090, Institutskaya 3a, Novosibirsk, Russia, and Venable and Kenan Laboratories, Department of Chemistry, CB 3290, University of North Carolina, Chapel Hill, North Carolina 27599
| | - Renad Z. Sagdeev
- International Tomography Center, 630090, Institutskaya 3a, Novosibirsk, Russia, and Venable and Kenan Laboratories, Department of Chemistry, CB 3290, University of North Carolina, Chapel Hill, North Carolina 27599
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21
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Shafirovich V, Dourandin A, Geacintov NE. Proton-Coupled Electron-Transfer Reactions at a Distance in DNA Duplexes: Kinetic Deuterium Isotope Effect. J Phys Chem B 2001. [DOI: 10.1021/jp0044734] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vladimir Shafirovich
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180
| | - Alexander Dourandin
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180
| | - Nicholas E. Geacintov
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180
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22
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Pogocki D, Ghezzo-Schöneich E, Schöneich C. Conformational Flexibility Controls Proton Transfer between the Methionine Hydroxy Sulfuranyl Radical and the N-Terminal Amino Group in Thr−(X)n−Met Peptides. J Phys Chem B 2001. [DOI: 10.1021/jp003450m] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Dariusz Pogocki
- Department of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, Kansas 66047, and Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland
| | - Elena Ghezzo-Schöneich
- Department of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, Kansas 66047, and Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland
| | - Christian Schöneich
- Department of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, Kansas 66047, and Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland
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Shafirovich V, Cadet J, Gasparutto D, Dourandin A, Huang W, Geacintov NE. Direct Spectroscopic Observation of 8-Oxo-7,8-dihydro-2‘-deoxyguanosine Radicals in Double-Stranded DNA Generated by One-Electron Oxidation at a Distance by 2-Aminopurine Radicals. J Phys Chem B 2000. [DOI: 10.1021/jp0029055] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vladimir Shafirovich
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180, and Laboratoire “Lésions des Acides Nucléiques”, SCIB/DRFMC and UMR CNRS 5046, CEA/Grenoble, 17 rue des Martyrs, F-38054 Grenoble, Cedex 9, France
| | - Jean Cadet
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180, and Laboratoire “Lésions des Acides Nucléiques”, SCIB/DRFMC and UMR CNRS 5046, CEA/Grenoble, 17 rue des Martyrs, F-38054 Grenoble, Cedex 9, France
| | - Didier Gasparutto
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180, and Laboratoire “Lésions des Acides Nucléiques”, SCIB/DRFMC and UMR CNRS 5046, CEA/Grenoble, 17 rue des Martyrs, F-38054 Grenoble, Cedex 9, France
| | - Alexander Dourandin
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180, and Laboratoire “Lésions des Acides Nucléiques”, SCIB/DRFMC and UMR CNRS 5046, CEA/Grenoble, 17 rue des Martyrs, F-38054 Grenoble, Cedex 9, France
| | - Weidong Huang
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180, and Laboratoire “Lésions des Acides Nucléiques”, SCIB/DRFMC and UMR CNRS 5046, CEA/Grenoble, 17 rue des Martyrs, F-38054 Grenoble, Cedex 9, France
| | - Nicholas E. Geacintov
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180, and Laboratoire “Lésions des Acides Nucléiques”, SCIB/DRFMC and UMR CNRS 5046, CEA/Grenoble, 17 rue des Martyrs, F-38054 Grenoble, Cedex 9, France
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