Results 31 to 40 of about 369,753 (339)

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

Guanine nucleotide exchange factors for Rho GTPases: turning on the switch.

open access: yesGenes & Development, 2002
Rho GTPases control many aspects of cell behavior through the regulation of multiple signal transduction pathways (Van Aelst and D’Souza-Schorey 1997; Hall 1998).
A. Schmidt, A. Hall
semanticscholar   +1 more source

Associations between purine metabolites and clinical symptoms in schizophrenia [PDF]

open access: yes, 2012
Background: The antioxidant defense system, which is known to be dysregulated in schizophrenia, is closely linked to the dynamics of purine pathway. Thus, alterations in the homeostatic balance in the purine pathway may be involved in the pathophysiology
Debra M. Montrose   +9 more
core   +3 more sources

Application of Ammonium Persulfate for Selective Oxidation of Guanines for Nucleic Acid Sequencing

open access: yesMolecules, 2017
Nucleic acids can be sequenced by a chemical procedure that partially damages the nucleotide positions at their base repetition. Many methods have been reported for the selective recognition of guanine.
Yafen Wang   +7 more
doaj   +1 more source

NupR Responding to Multiple Signals Is a Nucleoside Permease Regulator in Bacillus thuringiensis BMB171

open access: yesMicrobiology Spectrum, 2022
Nucleoside transport is essential for maintaining intracellular nucleoside and nucleobase homeostasis for living cells. Here, we identified an uncharacterized GntR/HutC family transcriptional regulator, NagR2, renamed NupR (nucleoside permease regulator),
Jiaxin Qin   +10 more
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

Flipping Back of Extrahelical Guanine after Methyl Repair

open access: yesBibechana, 2022
Methylation at O6 atom of guanine is a type of DNA damage which can cause a cancer. This damage at O6 atom of guanine in a DNA can be transferred to SG atom of cysteine in O6-alkylguanine-DNA alkyltransferase (AGT).
Rajendra Prasad Koirala   +1 more
doaj   +3 more sources

Substitutional Sodium Doping on Tungsten Ditelluride: A First-principles Study

open access: yesBibechana, 2022
Methylation at O6 atom of guanine is a type of DNA damage which can cause a cancer. This damage at O6 atom of guanine in a DNA can be transferred to SG atom of cysteine in O6-alkylguanine-DNA alkyltransferase (AGT).
Bibek Subedi, Narayan Adhikari
doaj   +3 more sources

Protonated nucleobases are not fully ionized in their chloride salt crystals and form metastable base pairs further stabilized by the surrounding anions

open access: yesIUCrJ, 2018
This paper presents experimental charge-density studies of cytosinium chloride, adeninium chloride hemihydrate and guaninium dichloride crystals based on ultra-high-resolution X-ray diffraction data and extensive theoretical calculations.
Prashant Kumar   +3 more
doaj   +1 more source

Silica nanochannels boosting Ru(bpy)32+-mediated electrochemical sensor for the detection of guanine in beer and pharmaceutical samples

open access: yesFrontiers in Nutrition, 2022
Vertically ordered mesoporous silica film (VMSF) with uniform mesoporous channels perpendicular to electrode substrate has a wide range of applications in direct electroanalysis of complex samples.
Luoxing Yang   +4 more
doaj   +1 more source

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