Results 11 to 20 of about 1,688,512 (279)

Base pair opening within B-DNA: free energy pathways for GC and AT pairs from umbrella sampling simulations. [PDF]

open access: yes, 2003
The conformational pathways and the free energy variations for base opening into the major and minor grooves of a B-DNA duplex are studied using umbrella sampling molecular dynamics simulations. We compare both GC and AT base pair opening within a double-
Giudice, Emmanuel   +2 more
core   +3 more sources

Statistical properties of metastable intermediates in DNA unzipping [PDF]

open access: yes, 2010
We unzip DNA molecules using optical tweezers and determine the sizes of the cooperatively unzipping and zipping regions separating consecutive metastable intermediates along the unzipping pathway. Sizes are found to be distributed following a power law,
Forns, N., Huguet, J. M., Ritort, F.
core   +2 more sources

Statistical Theory of Force Induced Unzipping of DNA

open access: yes, 2005
The unzipping transition under the influence of external force of a dsDNA molecule has been studied using the Peyrard-Bishop Hamiltonian. The critical force $F_c(T)$ is found to depend on the potential parameters $k$, represents the stiffness of single ...
Anselmetti   +22 more
core   +1 more source

Thermodynamics of Twisted DNA with Solvent Interaction

open access: yes, 2011
The imaginary time path integral formalism is applied to a nonlinear Hamiltonian for a short fragment of heterogeneous DNA with a stabilizing solvent interaction term.
Calladine C. R.   +5 more
core   +1 more source

Report on Pairing-based Cryptography

open access: yesJournal of Research of the National Institute of Standards and Technology, 2015
This report summarizes study results on pairing-based cryptography. The main purpose of the study is to form NIST's position on standardizing and recommending pairing-based cryptography schemes currently published in research literature and standardized in other standard bodies. The report reviews the mathematical background of pairings.
RenĂ© Peralta   +5 more
openaire   +3 more sources

Nakamaye's theorem on log canonical pairs [PDF]

open access: yes, 2014
We generalize Nakamaye's description, via intersection theory, of the augmented base locus of a big and nef divisor on a normal pair with log-canonical singularities or, more generally, on a normal variety with non-lc locus of dimension at most 1.
Angelo, Felice Lopez, Salvatore Cacciola
core   +3 more sources

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  

Pulling hairpinned polynucleotide chains: Does base-pair stacking interaction matter?

open access: yes, 2001
Force-induced structural transitions both in relatively random and in designed single-stranded DNA (ssDNA) chains are studied theoretically. At high salt conditions, ssDNA forms compacted hairpin patterns stabilized by base-pairing and base-pair stacking
Haijun Zhou, Moroz J. D., Yang Zhang
core   +1 more source

DNA base flipping by a base pair-mimic nucleoside [PDF]

open access: yes, 2005
On the basis of non-covalent bond interactions in nucleic acids, we synthesized the deoxyadenosine derivatives tethering a phenyl group (X) and a naphthyl group (Z) by an amide linker, which mimic a Watson–Crick base pair.
Fujii, Masayuki   +4 more
core   +3 more sources

Detailed kinship estimation for detecting bias among breeding families in a reintroduced population of the endangered bagrid catfish Tachysurus ichikawai

open access: yesPopulation Ecology, EarlyView.
In the process of captive breeding and reintroduction of endangered animal species, it is crucial to minimize familial bias in reproductive success during the reintroduction phase to preserve genetic diversity. In this study, we attempted to identify the familial lineage of individuals of the endangered bagrid fish Tachysurus ichikawai born at the ...
Hinano Mizuno   +5 more
wiley   +1 more source

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