Results 41 to 50 of about 25,371 (268)

Possible Emergence of Sequence Specific RNA Aminoacylation via Peptide Intermediary to Initiate Darwinian Evolution and Code through Origin of Life

open access: yesLife, 2018
One of the most intriguing questions in biological science is how life originated on Earth. A large number of hypotheses have been proposed to explain it, each putting an emphasis on different events leading to functional translation and self-sustained ...
Dimiter Kunnev, Anastas Gospodinov
doaj   +1 more source

Ribozyme Activity of RNA Nonenzymatically Polymerized from 3′,5′-Cyclic GMP

open access: yesEntropy, 2013
3′,5′-Cyclic GMP spontaneously nonenzymatically polymerizes in a base-catalyzed reaction affording G oligonucleotides. When reacted with fully or partially sequence-complementary RNA (oligo C), the abiotically generated oligo G RNA displays a typical ...
Samanta Pino   +5 more
doaj   +1 more source

A new view of RNA: the 1989 discovery by Sidney Altman and Thomas Cech [PDF]

open access: yesThe Ukrainian Biochemical Journal, 2020
The 1989 Nobel Prize Laureates in Chemistry Sidney Altman and Thomas Robert Cech made one of the most important discoveries in molecular genetics. Independently of each other, they demonstra­ted new experimental evidence that RNA molecules can not only ...
M. V. Grigorieva   +2 more
doaj   +1 more source

Expanding Chemical Space of Nucleic Acid Nanoparticles for Tunable Antiviral‐Like Immunomodulatory Responses and Potent Adjuvant Activity

open access: yesAdvanced Functional Materials, EarlyView.
We introduce a nucleic acid nanoparticle (NANP) platform designed to be rrecognized by the human innate immune system in a regulated manner. By changing chemical composition while maintaining constant architectural parameters, we identify key determinants of immunorecognition enabling the rational design of NANPs with tunable immune activation profiles
Martin Panigaj   +21 more
wiley   +1 more source

Processing of insect retrotransposons by self-cleaving ribozymes [PDF]

open access: yes, 2010
We show that several classes of insect non-LTR retrotransposons harbor self-cleaving ribozymes of the HDV family at their 5′ termini. In Drosophila the R2 ribozymes exhibit highly differential in vivo expression and robust in vitro activity ...
Andrej Luptak   +3 more
core   +1 more source

SUPER: Upcycling Genetic Parts for Precise Gene Expression Control, Leakage Minimization, and Genetic Circuit Stability

open access: yesAdvanced Science, EarlyView.
To precisely modulate natural and synthetic regulatory parts, SUPER is introduced as a sophisticated and tunable controller of genetic devices without requiring sequence modification on the target. SUPER enhances dynamic range of RNA‐, chemical‐, temperature‐, and protein‐responsive biosensors up to 1011%, and converts biosensors to cover an expanded ...
Taeyang Heo   +3 more
wiley   +1 more source

Meeting review : ESF workshop on "Impact of nucleic acid chemistry on gene function analysis: antisense, aptamers, ribozymes and RNAi" [PDF]

open access: yes, 2008
The shortage of functional information compared to the abundance of sequence information characterizes today’s situation in functional genomics. For many years the knock-down of a gene’s product has been the most powerful way of analysing its function ...
Engels, Joachim W. (Prof. Dr.)   +3 more
core  

Hammerhead Ribozymes: True Metal or Nucleobase Catalysis? Where Is the Catalytic Power from?

open access: yesMolecules, 2010
The hammerhead ribozyme was first considered as a metalloenzyme despite persistent inconsistencies between structural and functional data. In the last decade, metal ions were confirmed as catalysts in self-splicing ribozymes but displaced by nucleobases ...
Fabrice Leclerc
doaj   +1 more source

Antisense technology as a potential strategy for the treatment of coronaviruses infection: With focus on COVID‐19

open access: yesIET Nanobiotechnology, 2022
After the outbreak of coronavirus disease 2019 (COVID‐19) in December 2019 and the increasing number of SARS‐CoV‐2 infections all over the world, researchers are struggling to investigate effective therapeutic strategies for the treatment of this ...
Seyedeh Hoda Alavizadeh   +6 more
doaj   +1 more source

Translation‐Promoting Effects of RNA Template Overhangs in the Absence of Ribosomes

open access: yesAngewandte Chemie, Volume 138, Issue 4, 22 January 2026.
Ribosome‐free translation of an RNA sequence into a peptide sequence can be controlled by the folding of the template strand. Overhang sequences forming a triplex structure with the templating region and the peptidoyl RNA in pH‐dependent manner increase yields up to 40‐fold through entropic effects and mixed anhydride formation, allowing for controlled,
Nikolaos Giannakopoulos   +2 more
wiley   +2 more sources

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