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Vladimir Shafirovich

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Irine Khutsishvili; Luis A Marky; Dinshaw J Patel; Conor Crean; Nicholas E Geacintov; Na Zhang; Vladimir Shafirovich
Thermodynamic profiles and nuclear magnetic resonance studies of oligonucleotide duplexes containing single diastereomeric spiroiminodihydantoin lesions.
Tomer Zidki; Vladimir Shafirovich; Lihua Zhang; Sergei V Lymar
Water oxidation catalyzed by cobalt(II) adsorbed on silica nanoparticles.
Yang Liu; Zhi Liu; Nicholas E Geacintov; Vladimir Shafirovich
Proton-coupled hole hopping in nucleosomal and free DNA initiated by site-specific hole injection.

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2013: Irine Khutsishvili; Luis A Marky; Dinshaw J Patel; Conor Crean; Nicholas E Geacintov; Na Zhang; Vladimir Shafirovich
Thermodynamic profiles and nuclear magnetic resonance studies of oligonucleotide duplexes containing single diastereomeric spiroiminodihydantoin lesions.
Biochemistry 2013;52(8):1354-63.
2012: Tomer Zidki; Vladimir Shafirovich; Lihua Zhang; Sergei V Lymar
Water oxidation catalyzed by cobalt(II) adsorbed on silica nanoparticles.
Journal of the American Chemical Society 2012;134(35):14275-8.
2012: Yang Liu; Zhi Liu; Nicholas E Geacintov; Vladimir Shafirovich
Proton-coupled hole hopping in nucleosomal and free DNA initiated by site-specific hole injection.
Physical chemistry chemical physics : PCCP 2012;14(20):7400-10.
2012: Yekaterina Rokhlenko; Nicholas E Geacintov; Vladimir Shafirovich
Lifetimes and reaction pathways of guanine radical cations and neutral guanine radicals in an oligonucleotide in aqueous solutions.
Journal of the American Chemical Society 2012;134(10):4955-62.
2012: Shuang Ding; Svetlana A Durandina; Suse Broyde; Yuqin Cai; Marina Kolbanovskiy; Konstantin Kropachev; Zhi Liu; Vladimir Shafirovich; Nicholas E Geacintov
Structural, energetic and dynamic properties of guanine(C8)-thymine(N3) cross-links in DNA provide insights on susceptibility to nucleotide excision repair.
Nucleic acids research 2012;40(6):2506-17.
2012: Kok Seong Lim; Vladimir Shafirovich; Koli Taghizadeh; John S Wishnok; I Ramesh Babu; Nicholas E Geacintov; Peter C Dedon
Sequence-dependent variation in the reactivity of 8-Oxo-7,8-dihydro-2'-deoxyguanosine toward oxidation.
Chemical research in toxicology 2012;25(2):366-73.
2011: Young-Ae Lee; Zhi Liu; Peter C Dedon; Nicholas E Geacintov; Vladimir Shafirovich
Solvent exposure associated with single abasic sites alters the base sequence dependence of oxidation of guanine in DNA in GG sequence contexts.
Chembiochem : a European journal of chemical biology 2011;12(11):1731-9.
2011: Byeong Hwa Yun; Nicholas E Geacintov; Vladimir Shafirovich
Generation of guanine-thymidine cross-links in DNA by peroxynitrite/carbon dioxide.
Chemical research in toxicology 2011;24(7):1144-52.
2010: Pierre Daublain; Arun K Thazhathveetil; Vladimir Shafirovich; Qiang Wang; Anton Trifonov; Torsten Fiebig; Frederick D Lewis
Dynamics and efficiency of electron injection and transport in DNA using pyrenecarboxamide as an electron donor and 5-bromouracil as an electron acceptor.
The journal of physical chemistry. B 2010;114(45):14265-72.
2010: Jie Shao; Nicholas E Geacintov; Vladimir Shafirovich
Oxidative modification of guanine bases initiated by oxyl radicals derived from photolysis of azo compounds.
The journal of physical chemistry. B 2010;114(19):6685-92.
2010: Jie Shao; Nicholas E Geacintov; Vladimir Shafirovich
Oxidation of 8-oxo-7,8-dihydro-2'-deoxyguanosine by oxyl radicals produced by photolysis of azo compounds.
Chemical research in toxicology 2010;23(5):933-8.
2010: Byeong Hwa Yun; Peter C Dedon; Nicholas E Geacintov; Vladimir Shafirovich
One-electron oxidation of a pyrenyl photosensitizer covalently attached to DNA and competition between its further oxidation and DNA hole injection.
Photochemistry and photobiology 2010;86(3):563-70.
2009: Conor Crean; Jie Shao; Byeong Hwa Yun; Nicholas E Geacintov; Vladimir Shafirovich
The role of one-electron reduction of lipid hydroperoxides in causing DNA damage.
Chemistry (Weinheim an der Bergstrasse, Germany) 2009;15(40):10634-40.
2009: Conor Crean; Nicholas E Geacintov; Vladimir Shafirovich
Methylation of 2'-deoxyguanosine by a free radical mechanism.
The journal of physical chemistry. B 2009;113(38):12773-81.
2009: Shuang Ding; Lei Jia; Alexander Durandin; Conor Crean; Alexander Kolbanovskiy; Vladimir Shafirovich; Suse Broyde; Nicholas E Geacintov
Absolute configurations of spiroiminodihydantoin and allantoin stereoisomers: comparison of computed and measured electronic circular dichroism spectra.
Chemical research in toxicology 2009;22(6):1189-93.
2009: Shuang Ding; Alexander Kolbanovskiy; Alexander Durandin; Conor Crean; Vladimir Shafirovich; Suse Broyde; Nicholas E Geacintov
Absolute configurations of DNA lesions determined by comparisons of experimental ECD and ORD spectra with DFT calculations.
Chirality 2009;21 Suppl 1():E231-41.
2008: Pierre Daublain; Karsten Siegmund; Mahesh Hariharan; Josh Vura-Weis; Michael R Wasielewski; Frederick D Lewis; Vladimir Shafirovich; Qiang Wang; Milen Raytchev; Torsten Fiebig
Photoinduced charge separation in pyrenedicarboxamide-linked DNA hairpins.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2008;7(12):1501-8.
2008: Conor Crean; Nicholas E Geacintov; Vladimir Shafirovich
Intrastrand G-U cross-links generated by the oxidation of guanine in 5'-d(GCU) and 5'-r(GCU).
Free radical biology & medicine 2008;45(8):1125-34.
2008: Gregory A Poskrebyshev; Vladimir Shafirovich; Sergei V Lymar
Disproportionation pathways of aqueous hyponitrite radicals (HN2O2(*)/N2O2(*-)).
The journal of physical chemistry. A 2008;112(36):8295-302.
2008: Conor Crean; Young-Ae Lee; Byeong Hwa Yun; Nicholas E Geacintov; Vladimir Shafirovich
Oxidation of guanine by carbonate radicals derived from photolysis of carbonatotetramminecobalt(III) complexes and the pH dependence of intrastrand DNA cross-links mediated by guanine radical reactions.
Chembiochem : a European journal of chemical biology 2008;9(12):1985-91.
2008: Alexandra Dimitri; Lei Jia; Vladimir Shafirovich; Nicholas E Geacintov; Suse Broyde; David A Scicchitano
Transcription of DNA containing the 5-guanidino-4-nitroimidazole lesion by human RNA polymerase II and bacteriophage T7 RNA polymerase.
DNA repair 2008;7(8):1276-88.
2008: Frederick D Lewis; Huihe Zhu; Pierre Daublain; Karsten Sigmund; Torsten Fiebig; Milen Raytchev; Qiang Wang; Vladimir Shafirovich
Getting to guanine: mechanism and dynamics of charge separation and charge recombination in DNA revisited.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2008;7(5):534-9.
2008: Frederick D Lewis; Pierre Daublain; Ligang Zhang; Boiko Cohen; Josh Vura-Weis; Michael R Wasielewski; Vladimir Shafirovich; Qiang Wang; Milen Raytchev; Torsten Fiebig
Reversible bridge-mediated excited-state symmetry breaking in stilbene-linked DNA dumbbells.
The journal of physical chemistry. B 2008;112(12):3838-43.
2008: Young Ae Lee; Alexander Durandin; Peter C Dedon; Nicholas E Geacintov; Vladimir Shafirovich
Oxidation of guanine in G, GG, and GGG sequence contexts by aromatic pyrenyl radical cations and carbonate radical anions: relationship between kinetics and distribution of alkali-labile lesions.
The journal of physical chemistry. B 2008;112(6):1834-44.
2008: Conor Crean; Nicholas E Geacintov; Vladimir Shafirovich
Pathways of arachidonic acid peroxyl radical reactions and product formation with guanine radicals.
Chemical research in toxicology 2008;21(2):358-73.
2008: Conor Crean; Yuriy Uvaydov; Nicholas E Geacintov; Vladimir Shafirovich
Oxidation of single-stranded oligonucleotides by carbonate radical anions: generating intrastrand cross-links between guanine and thymine bases separated by cytosines.
Nucleic acids research 2008;36(3):742-55.
2007: Frederick D Lewis; Pierre Daublain; Boiko Cohen; Josh Vura-Weis; Vladimir Shafirovich; Michael R Wasielewski
Dynamics and efficiency of DNA hole transport via alternating AT versus poly(A) sequences.
Journal of the American Chemical Society 2007;129(49):15130-1.
2007: Byeong Hwa Yun; Young-Ae Lee; Seog K Kim; Vladimir Kuzmin; Alexander Kolbanovskiy; Peter C Dedon; Nicholas E Geacintov; Vladimir Shafirovich
Photosensitized oxidative DNA damage: from hole injection to chemical product formation and strand cleavage.
Journal of the American Chemical Society 2007;129(30):9321-32.
2007: Sergei V Lymar; Vladimir Shafirovich
Photoinduced release of nitroxyl and nitric oxide from diazeniumdiolates.
The journal of physical chemistry. B 2007;111(24):6861-7.
2007: Lei Jia; Vladimir Shafirovich; Nicholas E Geacintov; Suse Broyde
Lesion specificity in the base excision repair enzyme hNeil1: modeling and dynamics studies.
Biochemistry 2007;46(18):5305-14.
2007: Young-Ae Lee; Byeong Hwa Yun; Seog K Kim; Yelena Margolin; Peter C Dedon; Nicholas E Geacintov; Vladimir Shafirovich
Mechanisms of oxidation of guanine in DNA by carbonate radical anion, a decomposition product of nitrosoperoxycarbonate.
Chemistry (Weinheim an der Bergstrasse, Germany) 2007;13(16):4571-81.
2006: Alexander Durandin; Lei Jia; Conor Crean; Alexander Kolbanovskiy; Shuang Ding; Vladimir Shafirovich; Suse Broyde; Nicholas E Geacintov
Assignment of absolute configurations of the enantiomeric spiroiminodihydantoin nucleobases by experimental and computational optical rotatory dispersion methods.
Chemical research in toxicology 2006;19(7):908-13.
2006: Yelena Margolin; Jean-Francois Cloutier; Vladimir Shafirovich; Nicholas E Geacintov; Peter C Dedon
Paradoxical hotspots for guanine oxidation by a chemical mediator of inflammation.
Nature chemical biology 2006;2(7):365-6.
2006: Lei Jia; Vladimir Shafirovich; Robert Shapiro; Nicholas E Geacintov; Suse Broyde
Flexible 5-guanidino-4-nitroimidazole DNA lesions: structures and thermodynamics.
Biochemistry 2006;45(21):6644-55.
2006: Frederick D Lewis; Huihe Zhu; Pierre Daublain; Torsten Fiebig; Milen Raytchev; Qiang Wang; Vladimir Shafirovich
Crossover from superexchange to hopping as the mechanism for photoinduced charge transfer in DNA hairpin conjugates.
Journal of the American Chemical Society 2006;128(3):791-800.
2005: Lei Jia; Vladimir Shafirovich; Robert Shapiro; Nicholas E Geacintov; Suse Broyde
Structural and thermodynamic features of spiroiminodihydantoin damaged DNA duplexes.
Biochemistry 2005;44(40):13342-53.
2005: Conor Crean; Nicholas E Geacintov; Vladimir Shafirovich
Oxidation of guanine and 8-oxo-7,8-dihydroguanine by carbonate radical anions: insight from oxygen-18 labeling experiments.
Angewandte Chemie (International ed. in English) 2005;44(32):5057-60.
2005: Sergei V Lymar; Vladimir Shafirovich; Gregory A Poskrebyshev
One-electron reduction of aqueous nitric oxide: a mechanistic revision.
Inorganic chemistry 2005;44(15):5212-21.
2005: Naomi Suzuki; Manabu Yasui; Nicholas E Geacintov; Vladimir Shafirovich; Shinya Shibutani
Miscoding events during DNA synthesis past the nitration-damaged base 8-nitroguanine.
Biochemistry 2005;44(25):9238-45.
2005: Lei Jia; Vladimir Shafirovich; Robert Shapiro; Nicholas E Geacintov; Suse Broyde
Spiroiminodihydantoin lesions derived from guanine oxidation: structures, energetics, and functional implications.
Biochemistry 2005;44(16):6043-51.
2005: Richard Misiaszek; Yuriy Uvaydov; Conor Crean; Nicholas E Geacintov; Vladimir Shafirovich
Combination reactions of superoxide with 8-Oxo-7,8-dihydroguanine radicals in DNA: kinetics and end products.
The Journal of biological chemistry 2005;280(8):6293-300.
2005: Richard Misiaszek; Conor Crean; Nicholas E Geacintov; Vladimir Shafirovich
Combination of nitrogen dioxide radicals with 8-oxo-7,8-dihydroguanine and guanine radicals in DNA: oxidation and nitration end-products.
Journal of the American Chemical Society 2005;127(7):2191-200.
2004: Richard Misiaszek; Conor Crean; Avrum Joffe; Nicholas E Geacintov; Vladimir Shafirovich
Oxidative DNA damage associated with combination of guanine and superoxide radicals and repair mechanisms via radical trapping.
The Journal of biological chemistry 2004;279(31):32106-15.
2004: Gregory A Poskrebyshev; Vladimir Shafirovich; Sergei V Lymar
Hyponitrite radical, a stable adduct of nitric oxide and nitroxyl.
Journal of the American Chemical Society 2004;126(3):891-9.
2003: Avrum Joffe; Nicholas E Geacintov; Vladimir Shafirovich
DNA lesions derived from the site selective oxidation of Guanine by carbonate radical anions.
Chemical research in toxicology 2003;16(12):1528-38.
2003: Avrum Joffe; Steven Mock; Byeong Hwa Yun; Alexander Kolbanovskiy; Nicholas E Geacintov; Vladimir Shafirovich
Oxidative generation of guanine radicals by carbonate radicals and their reactions with nitrogen dioxide to form site specific 5-guanidino-4-nitroimidazole lesions in oligodeoxynucleotides.
Chemical research in toxicology 2003;16(8):966-73.
2003: Vladimir Shafirovich; Sergei V Lymar
Spin-forbidden deprotonation of aqueous nitroxyl (HNO).
Journal of the American Chemical Society 2003;125(21):6547-52.
2002: Vladimir Shafirovich; Sergei V Lymar
Nitroxyl and its anion in aqueous solutions: spin states, protic equilibria, and reactivities toward oxygen and nitric oxide.
Proceedings of the National Academy of Sciences of the United States of America 2002;99(11):7340-5.
2002: Vladimir Shafirovich; Steven Mock; Alexander Kolbanovskiy; Nicholas E Geacintov
Photochemically catalyzed generation of site-specific 8-nitroguanine adducts in DNA by the reaction of long-lived neutral guanine radicals with nitrogen dioxide.
Chemical research in toxicology 2002;15(4):591-7.
2001: Vladimir Shafirovich; A Dourandin; W Huang; Nicholas E Geacintov
The carbonate radical is a site-selective oxidizing agent of guanine in double-stranded oligonucleotides.
The Journal of biological chemistry 2001;276(27):24621-6.
2001: Vladimir Shafirovich; J Cadet; D Gasparutto; A Dourandin; Nicholas E Geacintov
Nitrogen dioxide as an oxidizing agent of 8-oxo-7,8-dihydro-2'-deoxyguanosine but not of 2'-deoxyguanosine.
Chemical research in toxicology 2001;14(2):233-41.
1999: Vladimir Shafirovich; A Dourandin; Natalia P Luneva; C Singh; F Kirigin; Nicholas E Geacintov
Multiphoton near-infrared femtosecond laser pulse-induced DNA damage with and without the photosensitizer proflavine.
Photochemistry and photobiology 1999;69(3):265-74.
1998: N Pirogov; Vladimir Shafirovich; Alexander Kolbanovskiy; K Solntsev; S A Courtney; Shantu Amin; Nicholas E Geacintov
Role of hydrophobic effects in the reaction of a polynuclear aromatic diol epoxide with oligodeoxynucleotides in aqueous solutions.
Chemical research in toxicology 1998;11(4):381-8.