Results 61 to 70 of about 2,817,417 (299)

Inhibition of topoisomerase 2 catalytic activity impacts the integrity of heterochromatin and repetitive DNA and leads to interlinks between clustered repeats

open access: yesNature Communications
DNA replication and transcription generate DNA supercoiling, which can cause topological stress and intertwining of daughter chromatin fibers, posing challenges to the completion of DNA replication and chromosome segregation.
Michalis Amoiridis   +6 more
doaj   +1 more source

ATR Activates the S-M Checkpoint during Unperturbed Growth to Ensure Sufficient Replication Prior to Mitotic Onset

open access: yesCell Reports, 2013
Cells must accurately replicate and segregate their DNA once per cell cycle in order to successfully transmit genetic information. During S phase in the presence of agents that cause replication stress, ATR-dependent checkpoints regulate origin firing ...
John Kenneth Eykelenboom   +6 more
doaj   +1 more source

Structure and stability of recombinant bovine odorant-binding protein: I. Design and analysis of monomeric mutants [PDF]

open access: yesPeerJ, 2016
Bovine odorant-binding protein (bOBP) differs from other lipocalins by lacking the conserved disulfide bond and for being able to form the domain-swapped dimers.
Olga V. Stepanenko   +5 more
doaj   +2 more sources

Ergothioneine supplementation improves pup phenotype and survival in a murine model of spinal muscular atrophy

open access: yesFEBS Letters, EarlyView.
Spinal muscular atrophy (SMA) is a genetic disease affecting motor neurons. Individuals with SMA experience mitochondrial dysfunction and oxidative stress. The aim of the study was to investigate the effect of an antioxidant and neuroprotective substance, ergothioneine (ERGO), on an SMNΔ7 mouse model of SMA.
Francesca Cadile   +8 more
wiley   +1 more source

PARP3 is a sensor of nicked nucleosomes and monoribosylates histone H2BGlu2

open access: yesNature Communications, 2016
Chromosomal single-strand DNA breaks occur frequently and require repair to avoid disease outcomes. Here, the authors show that in bird cells, PARP3 accelerates this repair, and use structural biology and cell biology techniques to reveal details of the ...
Gabrielle J. Grundy   +12 more
doaj   +1 more source

Structure and stability of recombinant bovine odorant-binding protein: III. Peculiarities of the wild type bOBP unfolding in crowded milieu [PDF]

open access: yesPeerJ, 2016
Contrary to the majority of the members of the lipocalin family, which are stable monomers with the specific OBP fold (a β-barrel consisting of a 8-stranded anti-parallel β-sheet followed by a short α-helical segment, a ninth β-strand, and a disordered C-
Olga V. Stepanenko   +5 more
doaj   +2 more sources

The equivalence ofB-stability andA-stability

open access: yesBIT, 1984
It is well known that linear and nonlinear stability concepts are equivalent for linear multistep methods in their one-leg formulation. This result is extended to Runge-Kutta methods. In particular, it is shown here that given an irreducible rational function R(z) whose degrees of numerator and denominator are at most s which has order of approximation
H. Türke   +3 more
openaire   +3 more sources

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

RETRACTED: Experiments on pressing elastic-viscous products [PDF]

open access: yesBIO Web of Conferences
See the retraction notice BIO Web of Conferences 138, 00001 (2024), https://doi.org/10.1051/bioconf ...
Bahadirov Gayrat   +2 more
doaj   +1 more source

Molecular basis for DNA repair synthesis on short gaps by mycobacterial Primase-Polymerase C

open access: yesNature Communications, 2020
Mycobacteria Prim-PolC performs short gap synthesis following removal of lesions during excision repair. Here the authors resolve crystal structures of pre- and post-catalytic Prim-PolC complexes bound to gapped DNA substrates to define its mechanism.
Nigel C. Brissett   +7 more
doaj   +1 more source

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