Results 71 to 80 of about 865,113 (239)

Understanding the errors of SHAPE-directed RNA structure modeling

open access: yes, 2011
Single-nucleotide-resolution chemical mapping for structured RNA is being rapidly advanced by new chemistries, faster readouts, and coupling to computational algorithms.
Aviran S.   +53 more
core   +1 more source

Information Entropy of Influenza A Segment 7

open access: yesEntropy, 2008
Information entropy (H) is a measure of uncertainty at each position within in a sequence of nucleotides.H was used to characterize a set of influenza A segment 7 nucleotide sequences. Nucleotide locations of high entropy were identified near the 5’
Joel K. Weltman   +2 more
doaj   +1 more source

Influence of a fluorobenzene nucleobase analogue on the conformational flexibility of RNA studied by molecular dynamics simulations [PDF]

open access: yes, 2006
Chemically modified bases are frequently used to stabilize nucleic acids, to study the driving forces for nucleic acid structure formation and to tune DNA and RNA hybridization conditions.
Engels, Joachim W. (Prof. Dr.)   +1 more
core  

Expanded base editing in rice and wheat using a Cas9-adenosine deaminase fusion

open access: yesGenome Biology, 2018
Nucleotide base editors in plants have been limited to conversion of cytosine to thymine. Here, we describe a new plant adenine base editor based on an evolved tRNA adenosine deaminase fused to the nickase CRISPR/Cas9, enabling A•T to G•C conversion at ...
Chao Li   +7 more
doaj   +1 more source

The mTORC1 Signaling Network Senses Changes in Cellular Purine Nucleotide Levels.

open access: yesCell Reports, 2017
Mechanistic (or mammalian) target of rapamycin complex 1 (mTORC1) integrates signals from growth factors and nutrients to control biosynthetic processes, including protein, lipid, and nucleic acid synthesis.
G. Hoxhaj   +7 more
semanticscholar   +1 more source

Applications of adenine nucleotide measurements in oceanography [PDF]

open access: yes
The methodology involved in nucleotide measurements is outlined, along with data to support the premise that ATP concentrations in microbial cells can be extrapolated to biomass parameters. ATP concentrations in microorganisms and nucleotide analyses are
Azam, F., Hodson, R., Holm-Hansen, O.
core   +1 more source

Oxidative Stress, Thiol Reagents, and Membrane Potential Modulate the Mitochondrial Permeability Transition by Affecting Nucleotide Binding to the Adenine Nucleotide Translocase*

open access: yesJournal of Biological Chemistry, 1997
Stimulation of the mitochondrial permeability transition (MPT) in de-energized mitochondria by phenylarsine oxide (PheArs) is greater than that by diamide and t-butylhydroperoxide (TBH), yet the increase in CyP binding to the inner mitochondrial membrane
A. Halestrap   +2 more
semanticscholar   +1 more source

A pilot study comparing the metabolic profiles of elite-level athletes from different sporting disciplines [PDF]

open access: yes, 2018
Background: The outstanding performance of an elite athlete might be associated with changes in their blood metabolic profile. The aims of this study were to compare the blood metabolic profiles between moderate- and high-power and endurance elite ...
A Boldyrev   +51 more
core   +1 more source

Allosteric regulation accompanied by oligomeric state changes of Trypanosoma brucei GMP reductase through cystathionine-β-synthase domain

open access: yesNature Communications, 2020
Trypanosoma brucei guanosine 5′-monophosphate reductase (TbGMPR) catalyses the conversion of GMP to inosine 5′-monophosphate and contains a cystathionine-β-synthase (CBS) domain. Here the authors combine X-ray crystallography and kinetic measurements and
Akira Imamura   +12 more
doaj   +1 more source

Coordinated Adenine Nucleotide Phosphohydrolysis and Nucleoside Signaling in Posthypoxic Endothelium

open access: yesJournal of Experimental Medicine, 2003
Limited oxygen delivery to tissues (hypoxia) is common in a variety of disease states. A number of parallels exist between hypoxia and acute inflammation, including the observation that both influence vascular permeability.
H. Eltzschig   +7 more
semanticscholar   +1 more source

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