Results 41 to 50 of about 900,113 (174)

Molecular Dynamics Simulations of a Nucleosome and Free DNA [PDF]

open access: yesarXiv, 2004
Nucleosomes organize the folding of DNA into chromatin and significantly influence transcription, replication, regulation and repair. All atom molecular dynamics simulations of a nucleosome and of its 146 basepairs of DNA free in solution have been conducted.
arxiv  

New Measurements of DNA Twist Elasticity [PDF]

open access: yes, 1997
The symmetries of the DNA double helix require a new term in its linear response to stress: the coupling between twist and stretch. Recent experiments with torsionally-constrained single molecules give the first direct measurement of this new material parameter. We extract its value from a recent experiment.
arxiv   +1 more source

DNA extraction: High yield is not synonymous with high diversity

open access: yesBioingeniøren, 2017
The quality, amount, and, in the case of polymicrobial samples, diversity of isolated DNA presupposes the precision of downstream application results. As part of a larger study on colorectal cancer, the aim of this work was to identify the DNA extraction
John Christopher Noone   +2 more
doaj  

Determinants of cyclization-decyclization kinetics of short DNA with sticky ends [PDF]

open access: yesarXiv, 2018
Cyclization of DNA with sticky ends is commonly used to construct DNA minicircles and to measure DNA bendability. The cyclization probability of short DNA (< 150 bp) has a strong length dependence, but how it depends on the rotational positioning of the sticky ends around the helical axis is less clear.
arxiv  

Molecular characterization of rice (Oryza sativa L.) genotypes for drought tolerance using two SSR markers

open access: yesElectronic Journal of Plant Breeding, 2017
Plant growth as well as productivity of rice (Oryza sativa L.), the major cereal and staple food of millions, is significantly affected by numerous biotic and abiotic stresses.
Shaheen A. Salam   +3 more
doaj   +1 more source

Transverse tunneling current through guanine traps in DNA [PDF]

open access: yes, 2005
The current - voltage dependence of the transverse tunneling current through the electron or hole traps in a DNA is investigated. The hopping of the charge between the sites of the trap and the charge-phonon coupling results in a staircase structure of the I-V curve.
arxiv   +1 more source

Polaron tunneling dynamics in the DNA molecule [PDF]

open access: yesarXiv, 2007
The formation of polaron and its migration in a DNA chain are studied within a semiclassical Peyrard-Biship-Holstein polaron model. Comparing the energetics of the polaron system found from the quantum chemical and semiclassical calculations, we extract the charge-phonon coupling constant for poly DNA sequences.
arxiv  

EVALUATION OF THE EFFICIENCY OF SAMPLING AND PRESERVING METHODS FOR NON-INVASIVE SAMPLES WHEN BROWN BEAR POPULATION-GENETIC STUDIES ARE CONDUCTING

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2019
The possibilities of using non-invasively sampled biological material to study the genetic diversity and status of the brown bear population in the European North of Russia are discussed.
Anastasiia Kuznetsova   +4 more
doaj   +1 more source

Rapid detection protocol ofFusarium oxysporum f. sp.cubense race 1 inbanana

open access: yesBiotecnología Vegetal, 2021
Fusarium wilt of banana is a typical vascular wilt disease caused byFusarium oxysporum f.sp.cubense. The genetic improvement program of the crop needs tools that allow the quickdetection of fungal phytopathogen.
María I. Oloriz   +4 more
doaj  

Information Theory of DNA Shotgun Sequencing [PDF]

open access: yesarXiv, 2012
DNA sequencing is the basic workhorse of modern day biology and medicine. Shotgun sequencing is the dominant technique used: many randomly located short fragments called reads are extracted from the DNA sequence, and these reads are assembled to reconstruct the original sequence.
arxiv  

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