Results 101 to 110 of about 22,404 (220)

UVA-induced cyclobutane pyrimidine dimers in DNA: a direct photochemical mechanism? [PDF]

open access: yes, 2010
International audienceThe carcinogenic action of UVA radiation is commonly attributed to DNA oxidation mediated by endogenous photosensitisers. Yet, it was recently shown that cyclobutane pyrimidine dimers (CPD), well known for their involvement in UVB ...
Banyasz, A.   +6 more
core   +3 more sources

Repair and DNA Polymerase Bypass of Clickable Pyrimidine Nucleotides

open access: yesBiomolecules
Clickable nucleosides, most often 5-ethynyl-2′-deoxyuridine (EtU), are widely used in studies of DNA replication in living cells and in DNA functionalization for bionanotechology applications.
Anton V. Endutkin   +6 more
doaj   +1 more source

GLC analysis of base composition of RNA and DNA hydrolysates [PDF]

open access: yes
Various methods used for the analysis of the base composition of RNA and DNA hydrolysates are presented. The methods discussed are: (1) ion-exchange chromatography, (2) paper chromatography, (3) paper electrophoresis, (4) thin layer chromatography, (5 ...
Gehreke, C. W., Lakings, D. B.
core   +1 more source

Anatomical Distribution of Nucleoside System in the Human Brain and Implications for Therapy [PDF]

open access: yes, 2013
Nucleosides have a wide range of physiological and pathophysiological roles in the human brain as modulators of a variety of neural functions. For example, adenosine, inosine, guanosine, and uridine participate in the mechanisms underlying memory ...
Dobolyi, Árpád, Kovács, Zsolt
core   +1 more source

Pyrimidine Acyclo-C-Nucleosides by Ring Transformations of 2-Formyl-L-arabinal

open access: yesMolecules, 2005
The protected 2-formyl-L-arabinal 2 reacted with thiourea and cyanamide in the presence of sodium hydride to afford via ring transformations the 5-[1R,2S-1,2- bis(benzyloxy)-3-hydroxypropyl]-1,2-dihydropyrimidines 3 and 4, respectively.
Klaus Peseke   +3 more
doaj   +1 more source

Pyrimidine Nucleosides Syntheses by Late-Stage Base Heterocyclization Reactions. [PDF]

open access: yesOrg Lett, 2022
Cavalli ES   +5 more
europepmc   +1 more source

Cytidine deaminases catalyze the conversion of N(S,O)4-substituted pyrimidine nucleosides. [PDF]

open access: yesSci Adv, 2023
Urbelienė N   +12 more
europepmc   +1 more source

The search for an identification of amino acids, nucleobases and nucleosides in samples returned from Mars [PDF]

open access: yes
The Mars Sample Return mission will provide us with a unique source of material from our solar system; material which could advance our knowledge of the processes of chemical evolution. As has been pointed out, Mars geological investigations based on the
Gehrke, Charles W.   +4 more
core   +1 more source

Dual control of vascular tone and remodelling by ATP released from nerves and endothelial cells [PDF]

open access: yes, 2008
Purinergic signalling is important both in short-term control of vascular tone and in longer-term control of cell proliferation, migration and death involved in vascular remodelling.
Burnstock, G
core  

Can acyclic conformational control be achieved via a sulfur-fluorine gauche effect? [PDF]

open access: yes, 2015
The gauche conformation of the 1,2-difluoroethane motif is known to involve stabilising hyperconjugative interactions between donor (bonding, σC-H) and acceptor (antibonding, σ*C-F) orbitals.
Daniliuc, C   +4 more
core   +1 more source

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