Results 61 to 70 of about 106,654 (267)

Base composition of DNA in adenovirus-12-induced tumor [PDF]

open access: yes, 1969
A series of experiments was conducted to study the base composition of DNA in AVl2-induced tumor and host cells by paper chromatography, and it was found that DNA per cent. guanine-cystosine contents were around 42 % in both of them. The base composition
Ohmori, Masaki
core   +1 more source

CRISPR/Cas13a: Compensatory Target Activation Mechanism

open access: yesAdvanced Science, EarlyView.
CRISPR/Cas13a‐CTAM as a novel compensatory target activation mechanism that enables synergistic activation of Cas13a via two independently editable short RNA effectors. This dual‐effector system maintains enzymatic activity comparable to traditional single‐effector while significantly enhancing flexibility, sensitivity, and application scope.
Bowen Jiang   +8 more
wiley   +1 more source

Purine and pyrimidine bases as growth substances for lactic acid bacteria [PDF]

open access: yes, 1941
In 1936 Richardson (1) showed that uracil was essential for the anaerobic growth of Staphylococcus aureus, but not for aerobic growth of the same organism.
Mitchell, Herschel K., Snell, Esmond E.
core  

Physisorption of Nucleobases on Graphene [PDF]

open access: yes, 2007
We report the results of our first-principles investigation on the interaction of the nucleobases adenine (A), cytosine (C), guanine (G), thymine (T), and uracil (U) with graphene, carried out within the density functional theory framework, with ...
C. Klein   +8 more
core   +3 more sources

Mechanozyme: An Artificial Enzyme With a Mechanophore Framework

open access: yesAdvanced Science, EarlyView.
Mechanical destabilization of a G‐quadruplex mechanophore in a DNAzyme markedly boosts its catalytic activity, demonstrating “mechanozymes” as artificial enzymes whose functions are modulated by mechanical stress exerted by ultrasonication. This mechanozyme principle is broadly applicable to control biomolecular activities.
Jiahao Ji   +7 more
wiley   +1 more source

First-principles GW calculations for DNA and RNA nucleobases

open access: yes, 2011
On the basis of first-principles GW calculations, we study the quasiparticle properties of the guanine, adenine, cytosine, thymine, and uracil DNA and RNA nucleobases.
A. Travers   +6 more
core   +4 more sources

Optimization of SWCNT‐FET Biosensors by Aptamer Engineering and Toehold‐Mediated Strand Displacement

open access: yesAdvanced Science, EarlyView.
Aptamer‐based single‐walled carbon nanotube (SWCNT) field‐effect transistor (FET) biosensors are developed for label‐free, real‐time biomarker detection. Truncated DNA aptamers enhance sensitivity through improved conformational switching. A toehold‐mediated strand displacement (TMSD) strategy optimizes functionalization and simplifies fabrication. The
Haosen Miao   +8 more
wiley   +1 more source

How Does Thymine DNA Survive Ultrafast Dimerization Damage?

open access: yesMolecules, 2016
The photodimerization reaction between the two adjacent thymine bases within a single strand has been the subject of numerous studies due to its potential to induce DNA mutagenesis and possible tumorigenesis in human skin cells.
Hongjuan Wang, Xuebo Chen
doaj   +1 more source

Mechanisms of base selection by the E.coli mispaired uracil glycosylase [PDF]

open access: yes, 2008
The repair of the multitude of single-base lesions formed daily in the cells of all living organisms is accomplished primarily by the base-excision repair (BER) pathway that initiates repair through a series of lesion-selective glycosylases.
Darwanto, Agus   +6 more
core   +2 more sources

Correlation Dynamics and Enhanced Signals for Serial DNA Sequencing

open access: yes, 2013
Nanopore based sequencing has demonstrated significant potential for the development of fast, accurate, and cost-efficient fingerprinting techniques for next generation molecular detection and sequencing.
Ahmed, Towfiq   +5 more
core   +1 more source

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