Results 61 to 70 of about 58,095 (298)
Switching ATP‐Forming Phosphoryl‐Transfer Chemistry With a Restricted Set of Amino Acids
Angewandte Chemie, EarlyView.Constraints on amino acid composition relevant to prebiotic chemistry reshape enzyme chemistry by replacing the canonical mechanism within a conserved protein fold with a distinct ATP‐forming reaction, ADP disproportionation. Such constraints generate alternative catalytic solutions not observed in modern enzymes and point to chemically plausible early
Sota Yagi +3 more
wiley +2 more sources
Inhibition of Tyrosyl-DNA Phosphodiesterase 1 by Lipophilic Pyrimidine Nucleosides
Molecules, 2020 Inhibition of DNA repair enzymes tyrosyl-DNA phosphodiesterase 1 and poly(ADP-ribose)polymerases 1 and 2 in the presence of pyrimidine nucleoside derivatives was studied here. New effective Tdp1 inhibitors were found in a series of nucleoside derivatives
Alexandra L. Zakharenko +8 more
doaj +1 more source
Mutant KRAS‐m6A Epitranscriptome Axis Promotes Colorectal Cancer and is a Therapeutic Target
Advanced Science, EarlyView.Mutant KRAS‐m6A axis promotes colorectal cancer (CRC) progression. Mutant KRAS stabilizes METTL3, leading to increased m6A‐modified BCL9L mRNA and translation of BCL9L protein. BCL9L in turn mediates TGF‐β secretion to induce differentiation of Treg and an immunosuppressive microenvironment.
Danyu Chen +12 more
wiley +1 more source
An IscS Persulfide Donates the Sulfur for Ribosomal Protein uL16 Thioamidation
Angewandte Chemie, EarlyView.YcaO‐catalyzed thioamidation of the ribosomal subunit protein uL16 is widespread in Pseudomonadota bacteria. We identify the iron–sulfur cluster cysteine desulfurase IscS as the sulfur donor via an IscS persulfide and observe direct IscS–uL16 interactions.
Yanqing Xue +2 more
wiley +2 more sources
A Straightforward Diphenylmethyl Protection Method and Deprotection of Some Pyrimidine Nucleosides
Molecules, 2013 Benzhydryl protection of primary and secondary alcohols has been reported previously via reaction with metal alcoholates. Our aim was to find generally useful and very mild conditions for the alcoholic protection and deprotection of nucleosides with the ...
Arthur van Aerschot, Milind Saudi
doaj +1 more source
Synthesis and Antiviral Activity of a Series of 2′-C-Methyl-4′-thionucleoside Monophosphate Prodrugs
Molecules, 2020 The NS5B RNA-dependent RNA polymerase of the hepatitis C virus (HCV) is a validated target for nucleoside antiviral drug therapy. We endeavored to synthesize and test a series of 4′-thionucleosides with a monophosphate prodrug moiety for their antiviral ...
Zackery W. Dentmon +2 more
doaj +1 more source
Advanced Science, EarlyView.HIV preferentially infects microglia, activating IL‐17A‐driven IFN‐γ/STAT1, CEBPB, and NF‐κB signaling that converges with cGAS‐STING and Notch–NEURL1 pathways, promoting neuroinflammation, mitochondrial dysfunction, and synaptic impairment. cART suppresses viral replication, attenuates inflammatory signaling, and at least partially restores ...
Karthick Chennakesavan +7 more
wiley +1 more source
Synthesis and Biological Activity of Reversed Pyrimidine Nucleosides
Croatica Chemica Acta, 2015 An efficient approach to reversed nucleosides which enables their synthesis in gram quantities is described. N-1′-Pyrimidine reversed nucleosides were prepared by treating of the sodium salt of pyrimidine bases with protected 5-tosyl ribose ...
Nataša Župančić +5 more
doaj +1 more source
Synthesis of New Imidazopyridine Nucleoside Derivatives Designed as Maribavir Analogues
Molecules, 2020 The strong inhibition of Human Cytomegalovirus (HCMV) replication by benzimidazole nucleosides, like Triciribine and Maribavir, has prompted us to expand the structure–activity relationships of the benzimidazole series, using as a central core the ...
Georgios Papadakis +6 more
doaj +1 more source
Alkylating nucleosides. 3. The reaction of 3,5-dimethylpyrazole nucleosides with N-bromosuccinimide
, 2023 Bromination of 3,5-dimethylpyrazole nucleosides with N-bromosuccinimide gave the corresponding 4-bromo-3,5-dimethylpyrazole, 3-methyl-5-(bromomethyl)pyrazole and 4-bromo-3-methyl-5-(bromomethyl)pyrazole nucleosides.
Herranz, Rosario +2 more
core +1 more source