Results 51 to 60 of about 2,760,256 (386)

Recent advances in the characterization of Crl, the unconventional activator of the stress sigma factor σS/RpoS

open access: yesBiomolecular Concepts, 2016
The bacterial RNA polymerase (RNAP) holoenzyme is a multisubunit core enzyme associated with a σ factor that is required for promoter-specific transcription initiation. Besides a primary σ responsible for most of the gene expression during active growth,
Cavaliere Paola, Norel Françoise
doaj   +1 more source

Multisubunit RNA polymerases

open access: yesCurrent Opinion in Structural Biology, 2002
Transcription of the genetic information in all cells is carried out by multisubunit RNA polymerases (RNAPs). Comparison of the crystal structures of a bacterial and a eukaryotic RNAP reveals a conserved core that comprises the active site and a multifunctional clamp.
openaire   +3 more sources

Crosstalk between the ribosome quality control‐associated E3 ubiquitin ligases LTN1 and RNF10

open access: yesFEBS Letters, EarlyView.
Loss of the E3 ligase LTN1, the ubiquitin‐like modifier UFM1, or the deubiquitinating enzyme UFSP2 disrupts endoplasmic reticulum–ribosome quality control (ER‐RQC), a pathway that removes stalled ribosomes and faulty proteins. This disruption may trigger a compensatory response to ER‐RQC defects, including increased expression of the E3 ligase RNF10 ...
Yuxi Huang   +8 more
wiley   +1 more source

In vitro Assessment of RNA Polymerase I Activity

open access: yesBio-Protocol, 2017
In eukaryotic cells transcriptional processes are carried out by three different RNA polymerases: RNA polymerase I which specifically transcribes ribosomal RNA (rRNA), RNA polymerase II which transcribes protein-coding genes to yield messenger RNAs ...
Marzia Govoni
doaj   +1 more source

Structures of active Hantaan virus polymerase uncover the mechanisms of Hantaviridae genome replication

open access: yesNature Communications, 2023
Hantaviruses are causing life-threatening zoonotic infections in humans. Their tripartite negative-stranded RNA genome is replicated by the multi-functional viral RNA-dependent RNA-polymerase.
Quentin Durieux Trouilleton   +4 more
doaj   +1 more source

A splicing-dependent transcriptional checkpoint associated with prespliceosome formation [PDF]

open access: yes, 2014
There is good evidence for functional interactions between splicing and transcription in eukaryotes, but how and why these processes are coupled remain unknown.
Ahn   +62 more
core   +1 more source

Promoter-proximal pausing of RNA polymerase II: a nexus of gene regulation

open access: yesGenes & Development, 2019
In this review, Core et al. discuss the recent advances in our understanding of the early steps in Pol II transcription, highlighting the events and factors involved in the establishment and release of paused Pol II.
Leighton J. Core, K. Adelman
semanticscholar   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

open access: yesFEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

RNA polymerase errors cause splicing defects and can be regulated by differential expression of RNA polymerase subunits

open access: yeseLife, 2015
Errors during transcription may play an important role in determining cellular phenotypes: the RNA polymerase error rate is >4 orders of magnitude higher than that of DNA polymerase and errors are amplified >1000-fold due to translation.
Lucas B Carey
doaj   +1 more source

Rescue of Synthetic Genomic RNA Analogs of Rabies Virus by Plasmid-Encoded Proteins [PDF]

open access: yes, 1994
Proteins eolirely expressed from cDNA wen used to rescue synthetic RNA genome analogs into infectious defective particles or rabies virus (RV). Synthetic negative-stranded RNAs coßtalning 3' · and S'-terminal RV sequences and tnlßscriptional ...
Conzelmann, Karl-Klaus, Schnell, M.-J.
core   +3 more sources

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