Search Results - "Maitre, Philippe"
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Watson–Crick Base Pair Radical Cation as a Model for Oxidative Damage in DNA
Published in The journal of physical chemistry letters (06-07-2017)“…The deleterious cellular effects of ionizing radiation are well-known, but the mechanisms causing DNA damage are poorly understood. The accepted molecular…”
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2
Ligation Motifs in Zinc-Bound Sulfonamide Drugs Assayed by IR Ion Spectroscopy
Published in Molecules (Basel, Switzerland) (14-05-2022)“…The sulfonamide-zinc ion interaction, performing a key role in various biological contexts, is the focus of the present study, with the aim of elucidating…”
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Cytosine Radical Cations: A Gas‐Phase Study Combining IRMPD Spectroscopy, UVPD Spectroscopy, Ion–Molecule Reactions, and Theoretical Calculations
Published in Chemphyschem (19-05-2017)“…The radical cation of cytosine (Cyt.+) is generated by dissociative oxidation from a ternary CuII complex in the gas phase. The radical cation is characterized…”
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4
Ligand-induced substrate steering and reshaping of [Ag2(H)]+ scaffold for selective CO2 extrusion from formic acid
Published in Nature communications (06-06-2016)“…Metalloenzymes preorganize the reaction environment to steer substrate(s) along the required reaction coordinate. Here, we show that phosphine ligands…”
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Novel Glycerophospholipid, Lipo- and N -acyl Amino Acids from Bacteroidetes: Isolation, Structure Elucidation and Bioactivity
Published in Molecules (Basel, Switzerland) (27-08-2021)“…The 'core' metabolome of the Bacteroidetes genus was recently discovered to consist of only seven metabolites. A structural relationship in terms of shared…”
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6
Sequence Ion Structures and Dissociation Chemistry of Deprotonated Sucrose Anions
Published in Journal of the American Society for Mass Spectrometry (01-12-2018)“…We investigate the tandem mass spectrometry of regiospecifically labeled, deprotonated sucrose analytes. We utilize density functional theory calculations to…”
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Structure and Infrared Spectrum of the Ag+−Phenol Ionic Complex
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (28-10-2010)“…The structure and infrared (IR) spectrum of the Ag+−phenol cationic complex are characterized in the gas phase by photodissociation spectroscopy and quantum…”
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Structure of Electron-Capture Dissociation Fragments from Charge-Tagged Peptides Probed by Tunable Infrared Multiple Photon Dissociation
Published in Journal of the American Chemical Society (12-11-2008)“…In this study, we propose the first spectroscopic structural characterization of c-type ions produced by ECD of a peptide. The structure of c-type ions formed…”
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9
The Intermediates in Lewis Acid Catalysis with Lanthanide Triflates
Published in European journal of organic chemistry (16-06-2019)“…Lanthanide triflates are effective Lewis acid catalysts in reactions involving carbonyl compounds due to their high oxophilicity and water stability. Despite…”
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10
Infrared Spectra of Protonated Uracil, Thymine and Cytosine
Published in Chemphyschem (22-10-2007)“…The gas‐phase structures of protonated uracil, thymine, and cytosine are probed by using mid‐infrared multiple‐photon dissociation (IRMPD) spectroscopy…”
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Infrared Multiple Photon Dissociation Spectroscopy of Protonated Cyameluric Acid
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (21-01-2021)“…The present study reports the first structural characterization of protonated cyameluric acid ([CA + H]+) in the gas phase, which paves the way for prospective…”
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12
Gas Phase Structure of Metal Mediated (Cytosine)2Ag+ Mimics the Hemiprotonated (Cytosine)2H+ Dimer in i‑Motif Folding
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (29-05-2014)“…The study of metal ion–DNA interaction aiming to understand the stabilization of artificial base pairing and a number of noncanonical motifs is of current…”
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13
Seleniranium Ions Undergo π‑Ligand Exchange via an Associative Mechanism in the Gas Phase
Published in Journal of organic chemistry (16-06-2017)“…Collision-induced dissociation mass spectrometry of the ammonium ions 4a and 4b results in the formation of the seleniranium ion 5, the structure and purity of…”
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14
Infrared Spectrum of the Protonated Water Dimer in the Gas Phase
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (21-10-2004)“…The frequency-dependent gas-phase infrared multiple photon dissociation (IRMPD) spectrum for the proton-bound dimer of water is reported. The present spectrum…”
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15
Gas-phase infrared spectrum and acidity of the radical cation of 9-methylguanine
Published in Chemical communications (Cambridge, England) (01-01-2013)“…Oxidative damage to DNA yields guanine radical cations. Their gas-phase IR spectroscopic signature and acidity have been modelled by the radical cation of…”
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Infrared Spectra of Isolated Protonated Polycyclic Aromatic Hydrocarbons: Protonated Naphthalene
Published in Angewandte Chemie (International ed.) (01-01-2007)“…Fingerprinting: The IR spectrum of protonated naphthalene, the smallest member of the class of protonated polycyclic aromatic hydrocarbons (PAHs), has…”
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17
Gas-phase structure and reactivity of the keto tautomer of the deoxyguanosine radical cation
Published in Physical chemistry chemical physics : PCCP (01-01-2015)“…Guanine radical cations are formed upon oxidation of DNA. Deoxyguanosine (dG) is used as a model, and the gas-phase infrared (IR) spectroscopic signature and…”
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Binding motifs of silver in prion octarepeat model peptides: a joint ion mobility, IR and UV spectroscopies, and theoretical approach
Published in Physical chemistry chemical physics : PCCP (01-01-2012)“…Transition metal-ion complexation is essential to the function and structural stability of many proteins. We studied silver complexation with the octarepeat…”
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Mimicking the Regulation Step of Fe-Monooxygenases: Allosteric Modulation of Fe IV -Oxo Formation by Guest Binding in a Dinuclear Zn II -Fe II Calix[6]arene-Based Funnel Complex
Published in Chemistry : a European journal (24-02-2017)“…A heteroditopic ligand associated with a calix[6]arene scaffold bearing a tris(imidazole) coordinating site at its small rim and an amine/pyridine ligand at…”
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Pterin determination in cerebrospinal fluid: state of the art
Published in Pteridines (28-08-2017)“…The analysis of pterins in the cerebrospinal fluid (CSF) is mandatory for the etiologic diagnosis of inborn errors of dopamine and serotonin metabolism. The…”
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