Results 21 to 30 of about 201,610 (282)

Infrared Spectral Signatures of Nucleobases in Interstellar Ices I: Purines

open access: yesLife, 2023
The purine nucleobases adenine and guanine are complex organic molecules that are essential for life. Despite their ubiquitous presence on Earth, purines have yet to be detected in observations of astronomical environments.
Caroline Antunes Rosa   +11 more
doaj   +1 more source

Nickel(II)-catalysed oxidative guanine and DNA damage beyond 8-oxoguanine [PDF]

open access: yes, 2007
Oxidative DNA damage is one of the most important and most studied mechanisms of disease. It has been associated with a range of terminal diseases such as cancer, heart disease, hepatitis, and HIV, as well as with a variety of everyday ailments.
Kelly, Michele C.   +3 more
core   +1 more source

Structure and singly occupied molecular orbital analysis of anionic tautomers of guanine [PDF]

open access: yes, 2008
Recently we reported the discovery of adiabatically bound anions of guanine which might be involved in the processes of DNA damage by low-energy electrons and in charge transfer through DNA.
Abdoul-Carime   +42 more
core   +1 more source

Interaction of low-energy electrons with the purine bases, nucleosides, and nucleotides of DNA [PDF]

open access: yes, 2006
The authors report results from computational studies of the interaction of low-energy electrons with the purine bases of DNA, adenine and guanine, as well as with the associated nucleosides, deoxyadenosine and deoxyguanosine, and the nucleotide ...
McKoy, Vincent, Winstead, Carl
core   +1 more source

Fluorescent turn-on probes for wash-free mRNA imaging via covalent site-specific enzymatic labeling. [PDF]

open access: yes, 2017
Investigating the many roles RNA plays in cellular regulation and function has increased demand for tools to explore RNA tracking and localization within cells.
Alexander, Seth C   +2 more
core   +2 more sources

Uncovering the Signaling Pathway behind Extracellular Guanine-Induced Activation of NO System: New Perspectives in Memory-Related Disorders

open access: yesFrontiers in Pharmacology, 2018
Mounting evidence suggests that the guanine-based purines stand out as key player in cell metabolism and in several models of neurodegenerative disorders, such as Parkinson’s and Alzheimer’s diseases.
Mariachiara Zuccarini   +18 more
doaj   +1 more source

Oxidative Stress: Role and Response of Short Guanine Tracts at Genomic Locations

open access: yesInternational Journal of Molecular Sciences, 2019
Over the decades, oxidative stress has emerged as a major concern to biological researchers. It is involved in the pathogenesis of various lifestyle-related diseases such as hypertension, diabetes, atherosclerosis, and neurodegenerative diseases.
Anju Singh   +3 more
semanticscholar   +1 more source

The Two Faces of the Guanyl Radical: Molecular Context and Behavior

open access: yesMolecules, 2021
The guanyl radical or neutral guanine radical G(-H)• results from the loss of a hydrogen atom (H•) or an electron/proton (e–/H+) couple from the guanine structures (G). The guanyl radical exists in two tautomeric forms.
Chryssostomos Chatgilialoglu
doaj   +1 more source

Structure of isolated biomolecules by electron diffraction-laser desorption: uracil and guanine [PDF]

open access: yes, 2009
We report the structure of isolated biomolecules, uracil and guanine, demonstrating the capability of a newly developed electron diffraction apparatus augmented with surface-assisted IR laser desorption.
Gahlmann, Andreas   +2 more
core   +1 more source

Eco-Friendly Synthesis of Nitrogen-Doped Mesoporous Carbon for Supercapacitor Application

open access: yesC, 2018
A sustainable and simple synthesis procedure involving the co-assembly of green phenolic resin and amphiphilic polymer template in water/ethanol mixture at room temperature to synthesize nitrogen doped mesoporous carbon is reported herein.
Georges Moussa   +4 more
doaj   +1 more source

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