Results 51 to 60 of about 7,436 (214)

TALEs from a spring--superelasticity of Tal effector protein structures. [PDF]

open access: yesPLoS ONE, 2014
Transcription activator-like effectors (TALEs) are DNA-related proteins that recognise and bind specific target sequences to manipulate gene expression.
Holger Flechsig
doaj   +1 more source

Single‐Molecule Characterization of Bacterial Factor‐Dependent Transcription Activation by Rob

open access: yesAdvanced Science, EarlyView.
Factor‐dependent transcription activation is crucial and involves complex interactions between transcription factors, RNA polymerase, and promoter DNA. Using single‐molecule assays, we show that Rob prebinds RNAP to facilitate promoter search and enhances DNA unwinding and promoter escape.
Yuqiong Zhang   +7 more
wiley   +1 more source

Topoisomerase II. Its role in conformation changes in superhelical nuclear DNA of lymphocytes after γ-irradiation [PDF]

open access: yes, 1985
Исследовано действие ингибиторов топоизомеразной ферментативной системы (новобиоцина, налидиксовой кислоты) на восстановление нарушенной облучением (8 Гр) суперспиральной структуры ядерной ДНК лимфоцитов крысы.
Комар, В.Е.   +2 more
core   +3 more sources

Role of the Discriminator Sequence in the Supercoiling Sensitivity of Bacterial Promoters

open access: yesmSystems, 2021
DNA supercoiling acts as a global transcriptional regulator that contributes to the rapid transcriptional response of bacteria to many environmental changes.
Raphaël Forquet   +4 more
doaj   +1 more source

Chromatin Remodelling Complexes in Plant Adaptation to Abiotic Stress: Mechanisms and Perspectives

open access: yesPlant, Cell &Environment, EarlyView.
ABSTRACT As sessile organisms, plants have evolved elaborate epigenetic regulatory networks to adapt to a wide range of abiotic stress. Chromatin remodelling is a core epigenetic regulatory mechanism that refers to the process by which chromatin remodelling complexes mediate dynamic changes in chromatin spatial conformation and DNA accessibility ...
Xiuxiu Zhang, Yueran Zhang, Jiang Li
wiley   +1 more source

Cleavage of circular, superhelical simian virus 40 DNA to a linear duplex by S1 nuclease [PDF]

open access: yes
S(1) nuclease, the single-strand specific nuclease from Aspergillus oryzae can cleave both strands of circular covalently closed, superhelical simian virus 40 (SV40) DNA to generate unit length linear duplex molecules with intact single strands.
Berg, P., Beard, P., Morrow, J. F.
core   +1 more source

Architectural Organization of Dinoflagellate Liquid Crystalline Chromosomes

open access: yesMicroorganisms, 2019
Dinoflagellates have some of the largest genome sizes, but lack architectural nucleosomes. Their liquid crystalline chromosomes (LCCs) are the only non-architectural protein-mediated chromosome packaging systems, having high degrees of DNA superhelicity,
Joseph Tin Yum Wong
doaj   +1 more source

Stress-induced duplex destabilization (SIDD) profiles for T7 bacteriophage promoters [PDF]

open access: yesКомпьютерные исследования и моделирование, 2018
The functioning of DNA regulatory regions rely primarily on their physicochemical and structural properties but not on nucleotide sequences, i.e. genetic text.
Mikhail Anatolievich Orlov   +4 more
doaj   +1 more source

Molecular Acrobats: How CHD Remodelers Shape the Genetic Playground to License Cell Identity

open access: yesBioEssays, Volume 48, Issue 7, July 2026.
ABSTRACT In eukaryotes, DNA is not a naked repository of genetic information but is tightly wound around histone octamers to form nucleosomes. While this packaging solves the spatial problem of fitting 2 meters of DNA into a microscopic nucleus, it creates a massive accessibility problem for DNA‐templated events, including transcription, replication ...
İsa Özdemir, Sarah J. Hainer
wiley   +1 more source

Determination of the number of superhelical turns in simian virus 40 DNA by gel electrophoresis [PDF]

open access: yes, 1975
Closed-circular, superhelical DNA from simian virus 40 (SV40 DNA I) was treated with an excess of DNA-relaxing enzyme in the presence of increasing amounts of ethidium bromide (EtdBr).
Keller, W.
core  

Home - About - Disclaimer - Privacy