Results 21 to 30 of about 5,924 (208)

Learning from the Invaders: What Viruses Teach Us about RNA-Based Regulation in Microbes

open access: yesMicroorganisms, 2022
Viruses feature an evolutionary shaped minimal genome that is obligately dependent on the cellular transcription and translation machinery for propagation.
L. Peter Sarin
doaj   +1 more source

Sustainable Protocol for the Synthesis of 2′,3′-Dideoxynucleoside and 2′,3′-Didehydro-2′,3′-dideoxynucleoside Derivatives

open access: yesMolecules, 2022
An improved protocol for the transformation of ribonucleosides into 2′,3′-dideoxynucleoside and 2′,3′-didehydro-2′,3′-dideoxynucleoside derivatives, including the anti-HIV drugs stavudine (d4T), zalcitabine (ddC) and didanosine (ddI), was established ...
Virginia Martín-Nieves   +3 more
doaj   +1 more source

Practical Silyl Protection of Ribonucleosides [PDF]

open access: yesOrganic Letters, 2013
Herein we report the site-selective silylation of the ribonucelosides. The method enables a simple and efficient procedure for accessing suitably protected monomers for automated RNA synthesis. Switching to the opposite enantiomer of the catalyst allows for the selective silylation of the 3'-hydroxyl, which could be used in the synthesis of unnatural ...
Thomas P, Blaisdell   +4 more
openaire   +2 more sources

Structural and Molecular Basis for Mitochondrial DNA Replication and Transcription in Health and Antiviral Drug Toxicity

open access: yesMolecules, 2023
Human mitochondrial DNA (mtDNA) is a 16.9 kbp double-stranded, circular DNA, encoding subunits of the oxidative phosphorylation electron transfer chain and essential RNAs for mitochondrial protein translation.
Joon Park   +2 more
doaj   +1 more source

Permeability of Coxiella burnetii to ribonucleosides [PDF]

open access: yesMicrobiology, 2002
Knowledge about transport in Coxiella burnetii, an obligate phagolysosomal parasite, is incomplete. The authors investigated the capability of isolated, intact, host-free Coxiella to transport ribonucleosides while incubated at a pH value typical of lysosomes.
Jeffrey D, Miller, Herbert A, Thompson
openaire   +2 more sources

Synthesis of Disaccharide Nucleosides Utilizing the Temporary Protection of the 2′,3′-cis-Diol of Ribonucleosides by a Boronic Ester

open access: yesMolecules, 2017
Disaccharide nucleosides are an important class of natural compounds that have a variety of biological activities. In this study, we report on the synthesis of disaccharide nucleosides utilizing the temporary protection of the 2′,3′-cis-diol of ...
Hidehisa Someya, Taiki Itoh, Shin Aoki
doaj   +1 more source

Characterizing Benzo[a]pyrene Adducts in Transfer RNAs Using Liquid Chromatography Coupled with Tandem Mass Spectrometry (LC-MS/MS)

open access: yesBiomedicines, 2023
The activated forms of the environmental pollutant benzo[a]pyrene (B[a]P), such as benzo[a]pyrene diol epoxide (BPDE), are known to cause damage to genomic DNA and proteins. However, the impact of BPDE on ribonucleic acid (RNA) remains unclear.
Cassandra Herbert   +4 more
doaj   +1 more source

Synthesis of Novel Bicyclo[2.2.1] Ribonucleosides:  2‘-Amino- and 2‘-Thio-LNA Monomeric Nucleosides

open access: yes, 2016
Synthesis of Novel Bicyclo[2.2.1] Ribonucleosides:  2‘-Amino- and 2‘-Thio-LNA Monomeric ...
Jesper Wengel (20049)   +2 more
core   +2 more sources

Identification of N6,N6-Dimethyladenosine in Transfer RNA from Mycobacterium bovis Bacille Calmette-Guérin

open access: yesMolecules, 2011
There are more than 100 different ribonucleoside structures incorporated as post-transcriptional modifications, mainly in tRNA and rRNA of both prokaryotes and eukaryotes, and emerging evidence suggests that these modifications function as a system in ...
Peter C. Dedon   +8 more
doaj   +1 more source

Biomimetic Ketone Reduction by Disulfide Radical Anion

open access: yesMolecules, 2021
The conversion of ribonucleosides to 2′-deoxyribonucleosides is catalyzed by ribonucleoside reductase enzymes in nature. One of the key steps in this complex radical mechanism is the reduction of the 3′-ketodeoxynucleotide by a pair of cysteine residues,
Sebastian Barata-Vallejo   +5 more
doaj   +1 more source

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