Results 21 to 30 of about 408,201 (235)

Inhibition of Bacterial RNase P RNA by Phenothiazine Derivatives

open access: yesBiomolecules, 2016
There is a need to identify novel scaffolds and targets to develop new antibiotics. Methylene blue is a phenothiazine derivative, and it has been shown to possess anti-malarial and anti-trypanosomal activities.
Shiying Wu   +2 more
doaj   +1 more source

RNA ligase ribozymes with a small catalytic core

open access: yesScientific Reports, 2023
Catalytic RNAs, or ribozymes, catalyze diverse chemical reactions that could have sustained primordial life in the hypothetical RNA world. Many natural ribozymes and laboratory evolved ribozymes exhibit efficient catalysis mediated by elaborate catalytic
Yoko Nomura, Yohei Yokobayashi
doaj   +1 more source

Transient tether between the SRP RNA and SRP receptor ensures efficient cargo delivery during cotranslational protein targeting [PDF]

open access: yes, 2010
Kinetic control of macromolecular interactions plays key roles in biological regulation. An example of such control occurs in cotranslational protein targeting by the signal recognition particle (SRP), during which the SRP RNA and the cargo both ...
Shan, Shu-ou, Shen, Kuang
core   +3 more sources

Structural and biochemical basis for DNA and RNA catalysis by human Topoisomerase 3β

open access: yesNature Communications, 2022
The authors revealed novel roles of catalytic residues and divalent metal ions for hsTOP3B, the human RNA topoisomerase, and demonstrated the structural elements that kinetically modulate the DNA and RNA topoisomerase activities of TOP3B.
Xi Yang   +4 more
doaj   +1 more source

The origins and physical roots of life’s dual – metabolic and genetic – nature [PDF]

open access: yes, 2017
This review paper aims at a better understanding of the origin and physical foundation of life’s dual – metabolic and genetic – nature. First, I give a concise ‘top-down’ survey of the origin of life, i.e., backwards in time from extant DNA/RNA/protein ...
De Tiège, Alexis
core   +2 more sources

ARGONAUTE PIWI domain and microRNA duplex structure regulate small RNA sorting in Arabidopsis. [PDF]

open access: yes, 2014
Small RNAs (sRNAs) are loaded into ARGONAUTE (AGO) proteins to induce gene silencing. In plants, the 5'-terminal nucleotide is important for sRNA sorting into different AGOs.
Carbonell, Alberto   +9 more
core   +2 more sources

RRP6 from Trypanosoma brucei: crystal structure of the catalytic domain, association with EAP3 and activity towards structured and non-structured RNA substrates. [PDF]

open access: yesPLoS ONE, 2014
RRP6 is a 3'-5' exoribonuclease associated to the eukaryotic exosome, a multiprotein complex essential for various RNA processing and degradation pathways.
Rosicler L Barbosa   +5 more
doaj   +1 more source

An Efficient Catalytic DNA that Cleaves L-RNA. [PDF]

open access: yesPLoS ONE, 2015
Many DNAzymes have been isolated from synthetic DNA pools to cleave natural RNA (D-RNA) substrates and some have been utilized for the design of aptazyme biosensors for bioanalytical applications.
Kha Tram   +3 more
doaj   +1 more source

Understanding the role of chromatin remodeling in the regulation of circadian transcription in Drosophila. [PDF]

open access: yes, 2015
Circadian clocks enable organisms to anticipate daily changes in the environment and coordinate temporal rhythms in physiology and behavior with the 24-h day-night cycle. The robust cycling of circadian gene expression is critical for proper timekeeping,
Chiu, Joanna C   +2 more
core   +1 more source

Mutational analysis of Trypanosoma brucei RNA editing ligase reveals regions critical for interaction with KREPA2. [PDF]

open access: yesPLoS ONE, 2015
The Trypanosoma brucei parasite causes the vector-borne disease African sleeping sickness. Mitochondrial mRNAs of T. brucei undergo posttranscriptional RNA editing to make mature, functional mRNAs.
Vaibhav Mehta   +3 more
doaj   +1 more source

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