Results 111 to 120 of about 326,612 (309)

Ribonucleolytic resection is required for repair of strand displaced nonhomologous end-joining intermediates [PDF]

open access: yes, 2013
Nonhomologous end-joining (NHEJ) pathways repair DNA double-strand breaks (DSBs) in eukaryotes and many prokaryotes, although it is not reported to operate in the third domain of life, archaea. Here, we describe a complete NHEJ complex, consisting of DNA
Bartlett, Edward   +2 more
core   +1 more source

Differential regulation of ZFAS1 splice variants by endoplasmic reticulum stress in hepatocyte cell lines

open access: yesFEBS Open Bio, EarlyView.
ZFAS1 is a lncRNA promoting cell proliferation and migration, exhibiting high expression in various cancers. It is conserved, widely expressed, and produces multiple splice variants with unclear roles. We identified several splice variants in hepatocyte models, and found that inhibiting or suppressing regulators of the unfolded protein response (PERK ...
Sébastien Soubeyrand   +2 more
wiley   +1 more source

Ancient and novel small RNA pathways compensate for the loss of piRNAs in multiple independent nematode lineages.

open access: yesPLoS Biology, 2015
Small RNA pathways act at the front line of defence against transposable elements across the Eukaryota. In animals, Piwi interacting small RNAs (piRNAs) are a crucial arm of this defence.
Peter Sarkies   +14 more
doaj   +1 more source

Subcellular partitioning of MRP RNA assessed by ultrastructural and biochemical analysis. [PDF]

open access: yes, 1994
A small RNA encoded within the nucleus is an essential subunit of a RNA processing endonuclease (RNase MRP) hypothesized to generate primers for mitochondrial DNA replication from the heavy strand origin of replication.
Gonzalez, M   +6 more
core  

Single-peptide DNA-dependent RNA polymerase homologous to multi-subunit RNA polymerase [PDF]

open access: yes, 2017
Transcription in all living organisms is accomplished by multi-subunit RNA polymerases (msRNAPs). msRNAPs are highly conserved in evolution and invariably share a B400 kDa five-subunit catalytic core.
Forrest, David   +3 more
core   +2 more sources

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

open access: yesFEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada   +5 more
wiley   +1 more source

Alternative polyadenylation couples to transcription initiation: Insights from ELAV-mediated 3' UTR extension

open access: yes, 2015
Transcription initiation and mRNA maturation were long considered co-occurring but separately regulated events of gene control. In the past decade, gene promoters, the platforms of transcription initiation, have been assigned additional functions such as
Hilgers, V.
core   +1 more source

TFE and Spt4/5 open and close the RNA polymerase clamp during the transcription cycle [PDF]

open access: yes, 2016
Transcription is an intrinsically dynamic process and requires the coordinated interplay of RNA polymerases (RNAPs) with nucleic acids and transcription factors.
Gietl, Andreas   +5 more
core   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

open access: yesFEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli   +8 more
wiley   +1 more source

Biochemical perspectives and epigenetic regulation: Insights from RNA Polymerase V in Arabidopsis thaliana

open access: yesPlant Stress
RNA polymerase V (Pol V) is a plant-specific RNA polymerase that plays a central role in RNA-directed DNA methylation (RdDM) and transcriptional silencing.
Misbah Naz   +5 more
doaj   +1 more source

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