Results 31 to 40 of about 2,102,008 (248)

Human cohesin compacts DNA by loop extrusion [PDF]

Science, 2019
Cohesin extrudes DNA loops DNA is folded into loops in eukaryotic cells by a process that depends on a ring-shaped adenosine triphosphatase complex called cohesin. Davidson et al. and Kim et al.
Yoori Kim, Zhubing Shi, Hongshan Zhang, Ilya J. Finkelstein, Hongtao Yu   +4 more
openaire   +2 more sources

Cohesin and condensin extrude DNA loops in a cell cycle-dependent manner

eLife, 2020
Loop extrusion by structural maintenance of chromosomes (SMC) complexes has been proposed as a mechanism to organize chromatin in interphase and metaphase. However, the requirements for chromatin organization in these cell cycle phases are different, and
Stefan Golfier, Thomas Quail, Hiroshi Kimura, Jan Brugués   +3 more
doaj   +1 more source

Sensitivity of cohesin–chromatin association to high-salt treatment corroborates non-topological mode of loop extrusion

Epigenetics & Chromatin, 2021
Cohesin is a key organizer of chromatin folding in eukaryotic cells. The two main activities of this ring-shaped protein complex are the maintenance of sister chromatid cohesion and the establishment of long-range DNA–DNA interactions through the process
Arkadiy K. Golov, Anastasia V. Golova, Alexey A. Gavrilov, Sergey V. Razin   +3 more
doaj   +1 more source

Chromosome organization by one-sided and two-sided loop extrusion

eLife, 2020
SMC complexes, such as condensin or cohesin, organize chromatin throughout the cell cycle by a process known as loop extrusion. SMC complexes reel in DNA, extruding and progressively growing DNA loops.
Edward J Banigan, Aafke A van den Berg, Hugo B Brandão, John F Marko, Leonid A Mirny   +4 more
doaj   +1 more source

Three-Dimensional Loop Extrusion [PDF]

, 2021
Loop extrusion convincingly describes how certain Structural Maintenance of Chromosome (SMC) proteins mediate the formation of large DNA loops. Yet, most of the existing computational models cannot reconcile recent in vitro observations showing that ...
Michieletto, Davide, Bonato, Andrea
core   +1 more source

Modeling of DNA binding to the condensin hinge domain using molecular dynamics simulations guided by atomic force microscopy.

PLoS Computational Biology, 2021
The condensin protein complex compacts chromatin during mitosis using its DNA-loop extrusion activity. Previous studies proposed scrunching and loop-capture models as molecular mechanisms for the loop extrusion process, both of which assume the binding ...
Hiroki Koide, Noriyuki Kodera, Shveta Bisht, Shoji Takada, Tsuyoshi Terakawa   +4 more
doaj   +1 more source

Reeling it in: how DNA topology drives loop extrusion by condensin

Nature Structural & Molecular Biology, 2022
Structural maintenance of chromosomes (SMC) complexes such as condensin regulate chromosome organization by extruding loops. A new study uses single-molecule imaging of condensin on supercoiled DNA to understand how condensins navigate the under- and overwound DNA states common throughout the genome.
Domenic N. Narducci, Anders S. Hansen
openaire   +3 more sources

Multi-feature clustering of CTCF binding creates robustness for loop extrusion blocking and Topologically Associating Domain boundaries

Nature Communications, 2023
Topologically Associating Domains (TADs) separate vertebrate genomes into insulated regulatory neighborhoods that focus genome-associated processes. TADs are formed by Cohesin-mediated loop extrusion, with many TAD boundaries consisting of clustered ...
Li-Hsin Chang, Sourav Ghosh, Andrea Papale, Jennifer M. Luppino, Mélanie Miranda, Vincent Piras, Jéril Degrouard, Joanne Edouard, Mallory Poncelet, Nathan Lecouvreur, Sébastien Bloyer, Amélie Leforestier, Eric F. Joyce, David Holcman, Daan Noordermeer   +14 more
doaj   +1 more source

A low Smc flux avoids collisions and facilitates chromosome organization in Bacillus subtilis

eLife, 2021
SMC complexes are widely conserved ATP-powered DNA-loop-extrusion motors indispensable for organizing and faithfully segregating chromosomes. How SMC complexes translocate along DNA for loop extrusion and what happens when two complexes meet on the same ...
Anna Anchimiuk, Virginia S Lioy, Florian Patrick Bock, Anita Minnen, Frederic Boccard, Stephan Gruber   +5 more
doaj   +1 more source

The accessory subunit of mitochondrial DNA polymerase {gamma} determines the DNA content of mitochondrial nucleoids in human cultured cells [PDF]

, 2009
The accessory subunit of mitochondrial DNA polymerase γ, POLGβ, functions as a processivity factor in vitro. Here we show POLGβ has additional roles in mitochondrial DNA metabolism.
H. Sembongi, T. Yasukawa, Yasukawa, T, Di Re, M., I. J. Holt, L. J. Bailey, Fersht, A.R., Boyd-Kirkup, JD, Martinsson, P., Holt, I.J., J. N. Spelbrink, Sembongi, H, Spelbrink, JN, Bailey, LJ, Sembongi, H., Goffart, S, P. Martinsson, A. R. Fersht, Di Re, M, Martinsson, P, Reyes, A., J. D. Boyd-kirkup, S. Goffart, Bailey, L.J., Fersht, AR, Wong, TS, T. S. Wong, Reyes, A, M. Di Re, Holt, IJ, J. He, He, J., Goffart, S., A. Reyes, Boyd-Kirkup, J.D., Wong, T.S., He, J, Yasukawa, T., Spelbrink, J.N.   +38 more
core   +2 more sources