Results 101 to 110 of about 2,766,615 (303)

Creation of electrical knots and observation of DNA topology

open access: yesNew Journal of Physics, 2021
Knots are fascinating topological structures that have been observed in various contexts, ranging from micro-worlds to macro-systems, and are conjectured to play a fundamental role in their respective fields.
Tian Chen   +5 more
doaj   +1 more source

Why is the DNA Denaturation Transition First Order?

open access: yes, 2000
We study a model for the denaturation transition of DNA in which the molecules are considered as composed of a sequence of alternating bound segments and denaturated loops.
B. Duplantier   +21 more
core   +1 more source

Integrative Approaches for DNA Sequence‐Controlled Functional Materials

open access: yesAdvanced Functional Materials, EarlyView.
DNA is emerging as a programmable building block for functional materials with applications in biomimicry, biochemical, and mechanical information processing. The integration of simulations, experiments, and machine learning is explored as a means to bridge DNA sequences with macroscopic material properties, highlighting current advances and providing ...
Aaron Gadzekpo   +4 more
wiley   +1 more source

FEDS: a Novel Fluorescence-Based High-Throughput Method for Measuring DNA Supercoiling In Vivo

open access: yesmBio, 2020
DNA supercoiling (DS) is essential for life because it controls critical processes, including transcription, replication, and recombination. Current methods to measure DNA supercoiling in vivo are laborious and unable to examine single cells.
Alexandre Duprey, Eduardo A. Groisman
doaj   +1 more source

Dual-topology insertion of a dual-topology membrane protein. [PDF]

open access: yes, 2015
Some membrane transporters are dual-topology dimers in which the subunits have inverted transmembrane topology. How a cell manages to generate equal populations of two opposite topologies from the same polypeptide chain remains unclear.
Bowie, James U   +2 more
core  

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

open access: yesAdvanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen   +3 more
wiley   +1 more source

Retroviral intasomes search for a target DNA by 1D diffusion which rarely results in integration

open access: yesNature Communications, 2016
Retroviral Integration into the host DNA is a rare event with evidence suggesting that it relies on DNA topology and sequence. Here the authors present single molecule evidence that shows the retroviral integration machinery vigorously scans the target ...
Nathan D. Jones   +6 more
doaj   +1 more source

Preferential binding of hot spot mutant p53 proteins to supercoiled DNA in vitro and in cells.

open access: yesPLoS ONE, 2013
Hot spot mutant p53 (mutp53) proteins exert oncogenic gain-of-function activities. Binding of mutp53 to DNA is assumed to be involved in mutp53-mediated repression or activation of several mutp53 target genes.
Marie Brázdová   +11 more
doaj   +1 more source

Reliability analysis of reconstructing phylogenies under long branch attraction conditions [PDF]

open access: yes, 2018
Master's Project (M.S.) University of Alaska Fairbanks, 2018.In this simulation study we examined the reliability of three phylogenetic reconstruction techniques in a long branch attraction (LBA) situation: Maximum Parsimony (M P), Neighbor Joining (NJ),
Dissanayake, Ranjan
core  

Chiral Nanohoops as an Efficient Spin Polarization System

open access: yesAdvanced Functional Materials, EarlyView.
Chiral conjugated nanohoops with a central dibenzopentalene unit exhibit 90% spin polarization at low voltage and high conductivity. These properties make them ideal components in molecular spintronics applications. Abstract A central challenge in molecular spintronics is to achieve a high spin polarization at low operating voltages and ambient ...
Anu Gupta   +4 more
wiley   +1 more source

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