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A label-free and sensitive fluorescent method for the detection of uracil-DNA glycosylase activity.
Chemical Communications, 2015The activity of uracil-DNA glycosylase (UDG), an enzyme in the base excision repair, is detected at a high sensitivity by a DNA substrate containing only one uracil through a label-free fluorescent approach, which is also successfully applied for the ...
Jing Tao +6 more
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Reaction of Bromine with Uracils
Nature, 1957SOME interesting observations on the reaction of bromine with pyrimidine compounds were recently reported by Cohn1. Since 1907, when Wheeler and Johnson2 first observed the coloured reaction product obtained by the action of bromine with uracil or cytosine and isolated the intermediate, the bromine reaction has been utilized for structural ...
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Increase in the photoreactivity of uracil derivatives by doubling thionation.
Physical Chemistry, Chemical Physics - PCCP, 2015The ability of 4-thiouracil to strongly absorb UVA radiation and to populate a reactive triplet state in high yield has enabled its use as a versatile photocrosslinker for nearly 50 years.
M. Pollum +2 more
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Structures and Fragmentation of [Cu(Uracil‐H)(Uracil)]+ in the Gas Phase
ChemPhysChem, 2011AbstractComplexes of copper (II) ions and uracil were studied using tandem mass spectrometry (Fourier transform ion cyclotron resonance, FTICR, mass spectrometry) including extensive isotopic labeling as well as theoretical calculations. Positive ion electrospray mass spectra of aqueous solutions of CuCl2 and uracil show that the [Cu(Ura‐H)(Ura)]+ ion ...
Osama Y. Ali, Travis D. Fridgen
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Angewandte Chemie, 2014
Molecules with large enough dipole moments can bind an electron by the dipole field, which has little effect on the molecular core. A molecular anion can be excited to a dipole-bound state, which can autodetach by vibronic coupling.
Hong-Tao Liu +3 more
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Molecules with large enough dipole moments can bind an electron by the dipole field, which has little effect on the molecular core. A molecular anion can be excited to a dipole-bound state, which can autodetach by vibronic coupling.
Hong-Tao Liu +3 more
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Protonation and deprotonation energies of uracil Implications for the uracil–water complex
Journal of the Chemical Society, Faraday Transactions, 1998The proton affinities PA(B) of the four oxygen lone pairs and of the two nitrogen atoms and the deprotonation energies PA(A-) of the two NH bonds of uracil are calculated by density functional theory (DFT) using the 6-31G(d,p) and 6-31G++(d,p) basis set. The PAs are also calculated by abinitio MO theory (MP4) using 6-31G(d,p) for comparison.
Minh Tho Nguyen +2 more
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Journal of Physical Chemistry B, 2014
Excited-state deactivation mechanisms of uracil are investigated using spin-flip time-dependent density functional theory. Two important minimum-energy crossing points are located, for both gas-phase and hydrated uracil, and optimized relaxation pathways
Xing Zhang, J. Herbert
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Excited-state deactivation mechanisms of uracil are investigated using spin-flip time-dependent density functional theory. Two important minimum-energy crossing points are located, for both gas-phase and hydrated uracil, and optimized relaxation pathways
Xing Zhang, J. Herbert
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Shape resonance spectra of uracil, 5-fluorouracil, and 5-chlorouracil.
Journal of Chemical Physics, 2014We report on the shape resonance spectra of uracil, 5-fluorouracil, and 5-chlorouracil, as obtained from fixed-nuclei elastic scattering calculations performed with the Schwinger multichannel method with pseudopotentials.
F. Kossoski, M. Bettega, M. Varella
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DNA base stacking: The stacked uracil/uracil and thymine/thymine minima
Journal of Computational Chemistry, 2012AbstractThe potential energy surfaces of stacked uracil dimer (U/U) and stacked thymine dimer (T/T) have been explored at the counterpoise (CP)‐corrected M06‐2X/6‐31+G(d) level of theory, in the gas phase and in solution (with water and, for U/U, 1,4‐dioxane as the solvents) modeled by a continuum solvent using the polarizable continuum model ...
Ruairidh S. Hunter, Tanja van Mourik
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ChemInform Abstract: Ozonolysis of Uracils in Water.
ChemInform, 1989Abstract The ozonolysis of uracils unsubstituted at the 1-position gave new 1-acyl-5-hydroxyhydantoins and 5-hydroxyhydantoins in water, while that of 1-substituted uracils gave the corresponding 5-hydroxyhydantoins in low yields. The structure of 1-acetyl-5-hydroxy-5-methylhydantoin was determined by X-ray crystallography.
KamiyaKazusaki +5 more
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