Results 21 to 30 of about 14,080 (252)

Photo-Induced Coupled Nuclear and Electron Dynamics in the Nucleobase Uracil

open access: yesFrontiers in Physics, 2021
Photo-initiated processes in molecules often involve complex situations where the induced dynamics is characterized by the interplay of nuclear and electronic degrees of freedom.
Lena Bäuml   +4 more
doaj   +1 more source

Quantum-based modeling of protein-ligand interaction: The complex of RutA with uracil and molecular oxygen [PDF]

open access: yes, 2022
Modern quantum-based methods are employed to model interaction of the flavin-dependent enzyme RutA with the uracil and oxygen molecules. This complex presents the structure of reactants for the chain of chemical reactions of monooxygenation in the enzyme
Tatiana, Domratcheva   +4 more
core   +1 more source

Theoretical Study of Light-Induced Crosslinking Reaction Between Pyrimidine DNA Bases and Aromatic Amino Acids

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
Low-lying electronic excited states and their relaxation pathways as well as energetics of the crosslinking reaction between uracil as a model system for pyrimidine-type building blocks of DNA and RNA and benzene as a model system for aromatic groups of ...
Attila Bende   +3 more
doaj   +1 more source

Time-Resolved Dynamics in Iodide-Uracil-Water Clusters upon Excitation of the Nucleobase [PDF]

open access: yes, 2019
The dynamics of iodide-uracil-water (I−·U·H2O) clusters following π-π* excitation of the nucleobase are probed using time-resolved photoelectron spectroscopy (TRPES). Photoexcitation of this cluster at 4.77 eV results in electron transfer from the iodide
Valerie S. McGraw (7011487)   +3 more
core   +3 more sources

Synthesis and Evaluation of Some Uracil Nucleosides as Promising Anti-Herpes Simplex Virus 1 Agents

open access: yesMolecules, 2021
Since herpes simplex virus type 1 (HSV-1) infection is so widespread, several antiviral drugs have been developed to treat it, among which are uracil nucleosides.
Samir Mohamed Awad   +3 more
doaj   +1 more source

Synthesis of new alkyl derivatives of N(1)-(2’-bromo-1’,1’-difluoro-2’-chloroethyl)uracil with potential antitumor activity

open access: yesAktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2020
The most common ways of their chemical modification are used namely, electrophilic and nucleophilic substitution reactions during the purposeful search for active substances among pyrimidines with aromatic properties.
O. V. Velchynska
doaj   +1 more source

A mutant of uracil DNA glycosylase that distinguishes between cytosine and 5-methylcytosine [PDF]

open access: yes, 2014
We demonstrate that a mutant of uracil DNA glycosylase (N123D:L191A) distinguishes between cytosine and methylcytosine. Uracil DNA glycosylase (UDG) efficiently removes uracil from DNA in a reaction in which the base is flipped into the enzyme’s active ...
Fox, Keith R.   +11 more
core   +2 more sources

Probing the Molecular Frame of Uracil and Thymine with High Harmonic Generation Spectroscopy [PDF]

open access: yes, 2020
In this work we present computed high-harmonic generation (HHG) spectra of uracil and thyminemolecules, by means of the real-time time-dependent formulation of Gaussian-based configurationinteraction with single excitations (RT-TD-CIS).
Emanuele, Coccia, Eleonora, Luppi
core   +1 more source

Pyrimidine Biosynthesis and Ribonucleoside Metabolism in Species of Pseudomonas

open access: yesFermentation, 2023
Pyrimidine biosynthesis and ribonucleoside metabolism in species of Pseudomonas was the focus of this review, in relation to their current taxonomic assignments in different homology groups.
Thomas P. West
doaj   +1 more source

Synthesis of Some N1-Benzyl -6-(thio and alkyl or aryl thio) Uracil derivatives [PDF]

open access: yesKirkuk Journal of Science, 2013
New series of N1-Benzyl -6-(thio derivatives) Uracils have been prepared by reaction of 6-chloro uracil [F3] with benzyl chloride in dimethyl sulphoxide in presence of sodium carbonate to yield N1-Benzyl-6-chloro uracil [F4].Heating of [F4] in ethanol ...
Mohsin Omer Mohammad
doaj   +1 more source

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