Results 41 to 50 of about 900,113 (174)
Molecular Dynamics Simulations of a Nucleosome and Free DNA [PDF]
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]
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
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]
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
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]
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]
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
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
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]
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