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Morozova OB, Ivanov KL. Time-Resolved Chemically Induced Dynamic Nuclear Polarization of Biologically Important Molecules. Chemphyschem 2018; 20:197-215. [DOI: 10.1002/cphc.201800566] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 10/11/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Olga B. Morozova
- International Tomography Center; Institutskaya 3a 630090 Novosibirsk Russia
- Novosibirsk State University; Pirogova 2 630090 Novosibirsk Russia
| | - Konstantin L. Ivanov
- International Tomography Center; Institutskaya 3a 630090 Novosibirsk Russia
- Novosibirsk State University; Pirogova 2 630090 Novosibirsk Russia
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2
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Morozova OB, Panov MS, Fishman NN, Yurkovskaya AV. Electron transfer vs. proton-coupled electron transfer as the mechanism of reaction between amino acids and triplet-excited benzophenones revealed by time-resolved CIDNP. Phys Chem Chem Phys 2018; 20:21127-21135. [DOI: 10.1039/c8cp03591a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We use proportionality between NMR signal enhancements in geminate products and hyperfine coupling constants in transient radicals to elucidate reaction mechanism in detail.
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Affiliation(s)
- Olga B. Morozova
- International Tomography Center
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
| | - Mikhail S. Panov
- International Tomography Center
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
| | - Natalya N. Fishman
- International Tomography Center
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
| | - Alexandra V. Yurkovskaya
- International Tomography Center
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
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Morozova OB, Yurkovskaya AV. Modulation of the Rate of Reversible Electron Transfer in Oxidized Tryptophan and Tyrosine Containing Peptides in Acidic Aqueous Solution. J Phys Chem B 2014; 119:140-9. [DOI: 10.1021/jp511068n] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Olga B. Morozova
- International Tomography Center, Institutskaya
3a, 630090 Novosibirsk, Russia
| | - Alexandra V. Yurkovskaya
- International Tomography Center, Institutskaya
3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
2, 630090, Novosibirsk, Russia
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Saprygina NN, Morozova OB, Grampp G, Yurkovskaya AV. Effect of Amino Group Charge on the Photooxidation Kinetics of Aromatic Amino Acids. J Phys Chem A 2013; 118:339-49. [DOI: 10.1021/jp4097919] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Natalya N. Saprygina
- International Tomography Center, Institutskaya
3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova 2, 630090 Novosibirsk, Russia
| | - Olga B. Morozova
- International Tomography Center, Institutskaya
3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova 2, 630090 Novosibirsk, Russia
| | - Günter Grampp
- Institute
of Physical and Theoretical Chemistry, Graz University of Technology, Stremayrgasse
9, 8010 Graz, Austria
| | - Alexandra V. Yurkovskaya
- International Tomography Center, Institutskaya
3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova 2, 630090 Novosibirsk, Russia
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Morozova OB, Yurkovskaya AV, Kiryutin AS, Yarinich LA, Silnikov VN, Sagdeev RZ. Influence of the charge of amino group on rate and direction of intramolecular electron transfer reaction in shortlived oxidized peptides containing tryptophan and tyrosine. DOKLADY PHYSICAL CHEMISTRY 2013. [DOI: 10.1134/s0012501613100023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Nguyen TX, Grampp G, Yurkovskaya A, Lukzen N. Kinetics of the oxidation of thymine and thymidine by triplet 2,2'-dipyridyl in aqueous solutions at different pH values. J Phys Chem A 2013; 117:7655-60. [PMID: 23906227 PMCID: PMC3751068 DOI: 10.1021/jp4022882] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 06/21/2013] [Indexed: 01/20/2023]
Abstract
The photo-oxidation of the nucleobase, thymine (Thy), and nucleoside, thymidine (dThy), by dipyridyl (DP) has been investigated in aqueous solution using time-resolved laser flash photolysis. The pH dependence of the oxidation rate constants is measured within a large pH scale. As a consequence, the chemical reactivity of the reactants existing in solution at a certain range of pH is predicted. Bimolecular rate constants of the quenching reactions between triplet dipyridyl and thymine and thymidine are, respectively, kq = 2.4 × 10(7) M(-1) s(-1) (pH < 5.8) and kq = 1.0 × 10(7) M(-1) s(-1) (5.8 < pH < 9.8). Cyclic voltammetry was used to measure the potentials of thymine oxidation and dipyridyl reduction in water at pH < 7. Both results give hints for a proton coupled electron-transfer (PCET) reaction from thymine to triplet dipyridyl.
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Affiliation(s)
- Truong X. Nguyen
- Institute of Physical and Theoretical
Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Günter Grampp
- Institute of Physical and Theoretical
Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Alexandra
V. Yurkovskaya
- International Tomography
Center, Institutskaya 3a, 630090 Novosibirsk, Russia
- Novosibirsk State
University, Pirogova 2, 630090 Novosibirsk, Russia
| | - Nikita Lukzen
- International Tomography
Center, Institutskaya 3a, 630090 Novosibirsk, Russia
- Novosibirsk State
University, Pirogova 2, 630090 Novosibirsk, Russia
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Morozova OB, Kaptein R, Yurkovskaya AV. Changing the Direction of Intramolecular Electron Transfer in Oxidized Dipeptides Containing Tryptophan and Tyrosine. J Phys Chem B 2012; 116:12221-6. [DOI: 10.1021/jp307956q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Olga B. Morozova
- International Tomography Center, Institutskaya 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova 2, 630090, Novosibirsk, Russia
| | - Robert Kaptein
- Novosibirsk State University, Pirogova 2, 630090, Novosibirsk, Russia
- Bijvoet Center for Biomolecular
Research, Utrecht University, Padualaan
8, NL-3584, The Netherlands
| | - Alexandra V. Yurkovskaya
- International Tomography Center, Institutskaya 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova 2, 630090, Novosibirsk, Russia
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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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Morozova OB, Ivanov KL, Kiryutin AS, Sagdeev RZ, Köchling T, Vieth HM, Yurkovskaya AV. Time-resolved CIDNP: an NMR way to determine the EPR parameters of elusive radicals. Phys Chem Chem Phys 2011; 13:6619-27. [DOI: 10.1039/c0cp02449j] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Morozova OB, Yurkovskaya AV. Intramolecular Electron Transfer in the Photooxidized Peptides Tyrosine-Histidine and Histidine-Tyrosine: A Time-Resolved CIDNP Study. Angew Chem Int Ed Engl 2010; 49:7996-9. [DOI: 10.1002/anie.201003780] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Morozova OB, Yurkovskaya AV. Intramolecular Electron Transfer in the Photooxidized Peptides Tyrosine-Histidine and Histidine-Tyrosine: A Time-Resolved CIDNP Study. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003780] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chen X, Zhang L, Zhang L, Wang J, Liu H, Bu Y. Proton-Regulated Electron Transfers from Tyrosine to Tryptophan in Proteins: Through-Bond Mechanism versus Long-Range Hopping Mechanism. J Phys Chem B 2009; 113:16681-8. [DOI: 10.1021/jp9077689] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Xiaohua Chen
- Center for Modeling & Simulation Chemistry, Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China
| | - Laibin Zhang
- Center for Modeling & Simulation Chemistry, Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China
| | - Liang Zhang
- Center for Modeling & Simulation Chemistry, Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China
| | - Jun Wang
- Center for Modeling & Simulation Chemistry, Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China
| | - Haiying Liu
- Center for Modeling & Simulation Chemistry, Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China
| | - Yuxiang Bu
- Center for Modeling & Simulation Chemistry, Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China
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Morozova OB, Yurkovskaya AV. Aminium Cation Radical of Glycylglycine and its Deprotonation to Aminyl Radical in Aqueous Solution. J Phys Chem B 2008; 112:12859-62. [DOI: 10.1021/jp807149a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Olga B. Morozova
- International Tomography Center of SB RAS, Institutskaya 3a, 630090 Novosibirsk, Russia, and Institute of Experimental Physics, Free University of Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Alexandra V. Yurkovskaya
- International Tomography Center of SB RAS, Institutskaya 3a, 630090 Novosibirsk, Russia, and Institute of Experimental Physics, Free University of Berlin, Arnimallee 14, 14195 Berlin, Germany
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