Results 41 to 50 of about 48,825 (277)

The identification of viral ribonucleotide reductase encoded by ORF23 and ORF141 genes and effect on CyHV-2 replication

open access: yesFrontiers in Microbiology, 2023
IntroductionRibonucleotide reductase (RR) is essential for the replication of the double-stranded DNA virus CyHV-2 due to its ability to catalyze the conversion of ribonucleotides to deoxyribonucleotides, and is a potential target for the development of ...
Wenjie Cheng   +24 more
doaj   +1 more source

Metal-free class Ie ribonucleotide reductase from pathogens initiates catalysis with a tyrosine-derived dihydroxyphenylalanine radical

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2018
Significance Conversion of ribonucleotides to the 2′-deoxyribonucleotides required for DNA biosynthesis is catalyzed by ribonucleotide reductases (RNRs) via a free-radical mechanism.
Elizabeth J. Blaesi   +17 more
semanticscholar   +1 more source

Ribonucleotide reductase inhibitors: a new look at an old target for radiosensitization

open access: yesFrontiers in Oncology, 2012
Ribonucleotide reductase, the rate limiting enzyme in the synthesis and repair of DNA, has been studied as a target for inhibition in the treatment of cancer for many years.
Tobias eChapman, Timothy James Kinsella
doaj   +1 more source

Ribonucleotide incorporation enables repair of chromosome breaks by nonhomologous end joining

open access: yesScience, 2018
RNA takes over DNA repair Damage to DNA genomes is normally thought to be repaired with DNA. Pryor et al. now describe a clear exception (see the Perspective by Modesti).
J. Pryor   +6 more
semanticscholar   +1 more source

Metal‐Responsive Up‐Regulation of Bifunctional Disulfides for Suppressing Protein Misfolding and Promoting Oxidative Folding

open access: yesAngewandte Chemie, EarlyView.
A stress‐responsive folding promotor was developed by conjugating metal‐binding ligands and a redox‐active disulfide. The oxidative strength of the bifunctional disulfide was enhanced by metal coordination, inhibiting protein misfolding and up‐regulating the oxidative folding capacity under metal stress.
Keita Mori   +8 more
wiley   +2 more sources

Carcass Composition, Meat Quality, Calpain Activity, Fatty Acid Composition and Ribonucleotide Content in Southern Thai Native Goats and Three-Way Crossbred Goats

open access: yesFoods, 2021
Carcass composition, meat quality, calpain activity, fatty acid composition, and ribonucleotide content were examined and compared between male Southern Thai native goats (NG, n = 10) and three-way crossbred goats (CG, 50% Boer × 25% Saanen × 25 ...
Chanporn Chaosap   +5 more
doaj   +1 more source

Ribonucleotide Excision Repair Is Essential to Prevent Squamous Cell Carcinoma of the Skin.

open access: yesCancer Research, 2018
Because of imperfect discrimination against ribonucleoside triphosphates by the replicative DNA polymerases, large numbers of ribonucleotides are incorporated into the eukaryotic nuclear genome during S-phase.
Björn Hiller   +11 more
semanticscholar   +1 more source

Structural basis for proficient oxidized ribonucleotide insertion in double strand break repair

open access: yesNature Communications, 2021
The authors previously showed that pol μ lacks discrimination against oxidized dGTP (8-oxo-dGTP). Here they reveal the structural basis for proficient oxidized ribonucleotide (8-oxo-rGTP) incorporation during double strand break repair by pol μ.
Joonas A. Jamsen   +5 more
doaj   +1 more source

The binding of streptomycin to ribonucleotides.

open access: yesThe Journal of Antibiotics, 1979
Incubation of streptomycin (SM) with [32P]5'-ribonucleotides at pH 7.0 produces fractions that migrate towards the cathode in high voltage electrophoresis (HVE) separations at pH 3.5. SM appears to interact with pG, pA and pC but not with pU. The appearance of these [32P]-labeled fractions is dependent on incubation time and SM concentration ...
Elizabeth Bagley   +3 more
openaire   +4 more sources

Syntheses of some fluorescent ribonucleotides [PDF]

open access: yesNucleic Acids Research, 1980
Synthesis of guanosine 3'-phosphodiesters of 1, N6-ethenoadenosine-2-sulfonate or 1, N6-etheno-2-azaadenosine can be done readily with ribonuclease N1. There is a 10-fold difference in quantum yield between the phosphodiesters and the starting fluorescent nucleosides.
K.F. Yip, K.C. Tsou
openaire   +3 more sources

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