Results 71 to 80 of about 732,701 (348)

Genomic and proteomic biases inform metabolic engineering strategies for anaerobic fungi. [PDF]

open access: yes, 2020
Anaerobic fungi (Neocallimastigomycota) are emerging non-model hosts for biotechnology due to their wealth of biomass-degrading enzymes, yet tools to engineer these fungi have not yet been established.
Albà   +92 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

TDP2 suppresses chromosomal translocations induced by DNA topoisomerase II during gene transcription

open access: yesNature Communications, 2017
DNA double-strand breaks (DSBs) induced by topoisomerase II (TOP2) are rejoined by TDP2-dependent non-homologous end-joining (NHEJ) but whether this promotes or suppresses translocations is not clear. Here the authors show that TDP2 suppresses chromosome
Fernando Gómez-Herreros   +6 more
doaj   +1 more source

Somatic PMK-1/p38 signaling links environmental stress to germ cell apoptosis and heritable euploidy

open access: yesNature Communications, 2022
Here the authors show that elimination of germ cells carrying damaged genomes is regulated by intestinal stress signalling in nematodes. Failure of the intestinal signalling results in stress-induced aneuploidy indicating that environmental stress ...
Najmeh Soltanmohammadi   +2 more
doaj   +1 more source

A novel retinoblastoma therapy from genomic and epigenetic analyses. [PDF]

open access: yes, 2012
Retinoblastoma is an aggressive childhood cancer of the developing retina that is initiated by the biallelic loss of RB1. Tumours progress very quickly following RB1 inactivation but the underlying mechanism is not known.
Bahrami, Armita   +35 more
core  

Simulation as a method for asymptotic system behavior identification (e.g. water frog hemiclonal population systems) [PDF]

open access: yes, 2020
Studying any system requires development of ways to describe the variety of its conditions. Such development includes three steps. The first one is to identify groups of similar systems (associative typology).
Biriuk, Olga   +9 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

Epigenetic mechanisms and genome stability

open access: yesClinical Epigenetics, 2010
Abstract Epigenetic marks are well recognized as heritable chemical modifications of DNA and chromatin that induce chromatin structural changes thereby affecting gene activity. A lesser-known phenomenon is the pervasive effects these marks have on genomic integrity. Remarkably, epigenetic marks and the enzymes that establish them are involved
Putiri, Emily L., Robertson, Keith D.
openaire   +3 more sources

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

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