Results 161 to 170 of about 7,352 (214)

Structural characterisation of chromatin remodelling intermediates supports linker DNA-dependent product inhibition as a mechanism for nucleosome spacing. [PDF]

Elife
Hughes AL, Sundaramoorthy R, Owen-Hughes T.   +2 more
europepmc   +1 more source

Flipons enable genomes to learn by intermediating the exchange of energy for information. [PDF]

J R Soc Interface
Herbert A.
europepmc   +1 more source

Cryo-EM reveals open and closed Asgard chromatin assemblies

Ranawat HM, Cajili MK, Lopez-Barbosa N, Quail T, Dame RT, Dodonova SO.   +5 more
europepmc   +1 more source

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Circular dichroism of superhelical DNA

Biopolymers, 1971
AbstractThe circular dichroism (CD) spectra of a number of superhelical DNA's have been measured. The introduction of negative superhelical turns causes an increase in magnitude of the positive band around 280 mμ, while the trough around 250mμ is little affected.
Marcos F Maestre, J C Wang
exaly   +3 more sources

Probing DNA−DNA Electrostatic Friction in Tight Superhelical DNA Plies

The Journal of Physical Chemistry B, 2009
We estimate theoretically the strength of DNA-DNA electrostatic friction forces emerging upon a slow drag of one DNA over another one in a close juxtaposition. For ideally helical DNA duplexes, this friction occurs due to correlations in electrostatic potential near the DNA surface. The latter originate from the intrinsic helicity of DNA phosphates and
Cherstvy, A.
openaire   +3 more sources

Generation of Superhelical Torsion by ATP-Dependent Chromatin Remodeling Activities

Cell, 2000
ATP-dependent chromatin remodeling activities participate in the alteration of chromatin structure during gene regulation. All have DNA- or chromatin-stimulated ATPase activity and many can alter the structure of chromatin; however, the means by which ...
Andrew Flaus, Paul A Wade, David M J Lilley   +2 more
exaly   +2 more sources

Internal Dynamics of Superhelical DNA

Physical Review Letters, 2008
We present the first data on the temporal kinetics of monomer mean square displacements in DNA circles with defined degrees of superhelicity. The segmental dynamics of specifically labeled DNA plasmids with superhelical densities between 0 and -0.016 was assessed by fluorescence correlation spectroscopy.
Roman, Shusterman, Tatyana, Gavrinyov, Oleg, Krichevsky   +2 more
openaire   +2 more sources

Surface-Induced DNA Superhelicity

Biomacromolecules, 2000
Certain biopolymers, such as DNA, have a double-stranded twisted structure and frequently exhibit a supercoiled conformation. Over the past decade, extensive conformational analyses of different biopolymers have been performed using atomic force microscopy.
Y S, Velichko, K, Yoshikawa, A R, Khokhlov   +2 more
openaire   +2 more sources

Thermodynamic properties of superhelical DNAs

Biochemistry, 1975
Binding isotherms of ethidium to the superhelical DNA from phage PM2, and to PM2 DNA containing -1 single-chain scission per molecule, have been determined at six temperatures from 2.5 to 50 degrees, in 3M CsCl-0.01 M Na3EDTA. Spectrophotometric measurements in both the visible and ultraviolet (uv) regions were used to obtain the binding isotherms. The
T S, Hsieh, J C, Wang
openaire   +2 more sources