Results 11 to 20 of about 86,414 (313)

A study of the valence photoelectron spectrum of uracil and mixed water–uracil clusters

open access: yesThe Journal of Chemical Physics, 2023
The valence ionization of uracil and mixed water–uracil clusters has been studied experimentally and by ab initio calculations. In both measurements, the spectrum onset shows a red shift with respect to the uracil molecule, with the mixed cluster characterized by peculiar features unexplained by the sum of independent contributions of the water or ...
Giuseppe Mattioli   +15 more
openaire   +7 more sources

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

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

Genetic predisposition to porto‐sinusoidal vascular disorder: A functional genomic‐based, multigenerational family study

open access: yesHepatology, EarlyView., 2022
A deleterious variant of FCHSD1 results in mTOR pathway overactivation and may cause porto‐sinusoidal vascular disorder (PSVD). The pedigree of the family demonstrated an autosomal dominant disease with variable expressivity. Whole‐genome sequencing and Sanger sequencing both validated the existence of the FCHSD1 variant and the heterozygosity of c ...
Jingxuan Shan   +19 more
wiley   +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

Uracil-Induced Down-Regulation of the Yeast Uracil Permease [PDF]

open access: yesJournal of Bacteriology, 1999
ABSTRACT In Saccharomyces cerevisiae the FUR4 -encoded uracil permease catalyzes the first step of the pyrimidine salvage pathway. The availability of uracil has a negative regulatory effect upon its own transport.
K, Séron   +3 more
openaire   +2 more sources

Effects of the pyrE deletion mutant from Bacillus thuringiensis on gut microbiota and immune response of Spodoptera exigua

open access: yesFrontiers in Microbiology, 2023
The gut microbiota is essential for the growth and development of insects, and the intestinal immune system plays a critical role in regulating the homeostasis of intestinal microorganisms and their interactions with pathogenic bacteria.
Dan Zhao   +8 more
doaj   +1 more source

Architecturally diverse proteins converge on an analogous mechanism to inactivate Uracil-DNA glycosylase [PDF]

open access: yes, 2013
Uracil-DNA glycosylase (UDG) compromises the replication strategies of diverse viruses from unrelated lineages. Virally encoded proteins therefore exist to limit, inhibit or target UDG activity for proteolysis.
Cole, Ambrose R.   +11 more
core   +1 more source

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