Metal-assisted proton transfer reaction in base pairs
نویسندگان
چکیده
منابع مشابه
Real-time observation of bimodal proton transfer in acid-base pairs in water.
The neutralization reaction between an acid and a base in water, triggered after optical excitation, was studied by femtosecond vibrational spectroscopy. Bimodal dynamics were observed. In hydrogen-bonded acid-base complexes, the proton transfer proceeds extremely fast (within 150 femtoseconds). In encounter pairs formed by diffusion of uncomplexed photoacid and base molecules, the reaction upo...
متن کاملInfrared Signatures of Proton Transfer in Guanine⋅Cytosine and Adenine⋅Thymine Base Pairs: DFT Study
The structures of all stable tautomers of guanine⋅cytosine and adenine⋅thymine Watson–Crick base pairs produced by single and double proton transfers from the most stable structures are optimized using density functional theory (DFT) at the B3LYP/6-31G(d,p) level. The zwitterionic tautomer of guanine⋅cyosine is stable in a high-dielectric medium (water), but not in the gas phase. Normal mode ca...
متن کاملDouble proton transfer dynamics of model DNA base pairs in the condensed phase.
The dynamics of excited-state double proton transfer of model DNA base pairs, 7-azaindole dimers, is reported using femtosecond fluorescence spectroscopy. To elucidate the nature of the transfer in the condensed phase, here we examine variation of solvent polarity and viscosity, solute concentration, and isotopic fractionation. The rate of proton transfer is found to be significantly dependent ...
متن کاملChimeric GNA/DNA metal-mediated base pairs.
DNA double helices comprising chimeric GNA/DNA metal-mediated base pairs have been synthesized and characterized (GNA = glycol nucleic acid). The possibility to combine different nucleic acid backbones within one metal-mediated base pair expands the applicability of metal-functionalized nucleic acids.
متن کاملProton-transfer reaction mass spectrometry.
Proton-transfer reaction mass spectrometry (PTR-MS) is a technique developed almost exclusively for the detection of gaseous organic compounds in air. Volatile organic compounds (VOCs) in air have both natural and anthropogenic sources. Natural sources include the emission of organic gases by living objects, both plants and animals. A well-known example, which is discussed later in this review,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nucleic Acids Symposium Series
سال: 2007
ISSN: 0261-3166,1746-8272
DOI: 10.1093/nass/nrm113