Results 1 to 10 of about 247,874 (255)

Homeostatic Roles of the Proteostasis Network in Dendrites

open access: yesFrontiers in Cellular Neuroscience, 2020
Cellular protein homeostasis, or proteostasis, is indispensable to the survival and function of all cells. Distinct from other cell types, neurons are long-lived, exhibiting architecturally complex and diverse multipolar projection morphologies that can ...
Erin N. Lottes, Daniel N. Cox
doaj   +1 more source

The dark side of the ribosome life cycle

open access: yesRNA Biology, 2022
Thanks to genetics, biochemistry, and structural biology many features of the ribosome´s life cycles in models of bacteria, eukaryotes, and some organelles have been revealed to near-atomic details.
Sébastien Ferreira-Cerca
doaj   +1 more source

Genome-wide Survey of Ribosome Collision

open access: yesCell Reports, 2020
Summary: Ribosome movement is not always smooth and is rather often impeded. For ribosome pauses, fundamental issues remain to be addressed, including where ribosomes pause on mRNAs, what kind of RNA/amino acid sequence causes this pause, and the ...
Peixun Han   +10 more
doaj   +1 more source

Lamotrigine compromises the fidelity of initiator tRNA recruitment to the ribosomal P-site by IF2 and the RbfA release from 30S ribosomes in Escherichia coli

open access: yesRNA Biology, 2023
Lamotrigine (Ltg), an anticonvulsant drug, targets initiation factor 2 (IF2), compromises ribosome biogenesis and causes toxicity to Escherichia coli. However, our understanding of Ltg toxicity in E. coli remains unclear. While our in vitro assays reveal
Sudhir Singh   +6 more
doaj   +1 more source

Translation inhibitory elements from Hoxa3 and Hoxa11 mRNAs use uORFs for translation inhibition

open access: yeseLife, 2021
During embryogenesis, Hox mRNA translation is tightly regulated by a sophisticated molecular mechanism that combines two RNA regulons located in their 5’UTR. First, an internal ribosome entry site (IRES) enables cap-independent translation.
Fatima Alghoul   +3 more
doaj   +1 more source

A nascent polypeptide sequence modulates DnaA translation elongation in response to nutrient availability

open access: yeseLife, 2021
The ability to regulate DNA replication initiation in response to changing nutrient conditions is an important feature of most cell types. In bacteria, DNA replication is triggered by the initiator protein DnaA, which has long been suggested to respond ...
Michele Felletti   +3 more
doaj   +1 more source

Didemnin B and ternatin-4 differentially inhibit conformational changes in eEF1A required for aminoacyl-tRNA accommodation into mammalian ribosomes

open access: yeseLife, 2022
Rapid and accurate mRNA translation requires efficient codon-dependent delivery of the correct aminoacyl-tRNA (aa-tRNA) to the ribosomal A site. In mammals, this fidelity-determining reaction is facilitated by the GTPase elongation factor-1 alpha (eEF1A),
Manuel F Juette   +9 more
doaj   +1 more source

Kinetic modeling predicts a stimulatory role for ribosome collisions at elongation stall sites in bacteria

open access: yeseLife, 2017
Ribosome stalling on mRNAs can decrease protein expression. To decipher ribosome kinetics at stall sites, we induced ribosome stalling at specific codons by starving the bacterium Escherichia coli for the cognate amino acid. We measured protein synthesis
Michael A Ferrin, Arvind R Subramaniam
doaj   +1 more source

Functional Analysis of PSRP1, the Chloroplast Homolog of a Cyanobacterial Ribosome Hibernation Factor

open access: yesPlants, 2020
Bacterial ribosome hibernation factors sequester ribosomes in an inactive state during the stationary phase and in response to stress. The cyanobacterial ribosome hibernation factor LrtA has been suggested to inactivate ribosomes in the dark and to be ...
Kevin Swift   +4 more
doaj   +1 more source

A Network-Guided Genetic Approach to Identify Novel Regulators of Adventitious Root Formation in Arabidopsis thaliana

open access: yesFrontiers in Plant Science, 2019
Adventitious roots (ARs) are formed de novo during post-embryonic development from non-root tissues, in processes that are highly dependent on environmental inputs.
Sergio Ibáñez   +8 more
doaj   +1 more source

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